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Cathode Active Material For Secondary Battery, And Lithium Secondary Battery Comprising Same

Abstract: The present invention provides a cathode active material for a secondary battery, comprising a lithium transition metal oxide, and, in a differential graph (ERC curve) showing the differentiation of a pH value for an acid (HCl) input amount, which is obtained using 0.5 M of HCl so as to perform pH titration on 10 g of the lithium transition metal oxide, three peaks are shown, and a y-axis value (dpH/dml) of a first peak shown on the smallest x-axis value among the three peaks is -1.0 or less.

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Patent Information

Application #
Filing Date
23 August 2019
Publication Number
12/2020
Publication Type
INA
Invention Field
ELECTRICAL
Status
Email
IPO@KNSPARTNERS.COM
Parent Application
Patent Number
Legal Status
Grant Date
2024-01-11
Renewal Date

Applicants

LG CHEM, LTD.
128, Yeoui-daero, Yeongdeungpo-gu, Seoul 07336

Inventors

1. JU, In Seong
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
2. JUNG, Wang Mo
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
3. PARK, Byung Chun
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
4. JIN, Joo Hong
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
5. SHIN, Ju Kyung
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
6. KIM, Ji Hye
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
7. BAEK, So Ra
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
8. YOO, Tae Gu
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122

Specification

Art [1]Mutual citations and related applications [2]This application claims the benefit of priority based on the September 19, Korea Patent Application No. 10-2017-0120680, and September 19, 2018 Korea Patent Application No. 10-2018-0112198 2017, and of the Korea Patent Application everything described in the literature are included as part of the specification. [3]Art [4]The present invention relates to a positive electrode and a lithium secondary battery including a secondary battery positive electrode active material, it. [5]BACKGROUND [6]Recently there is increasing cellular phones, laptop computers, electric vehicles, etc. along with the rapid spread of electronic appliances that use a battery small and light, yet relatively rapidly, the demand for high-capacity rechargeable battery. In particular, lithium secondary batteries are lightweight and have a high energy density, it has been spotlighted as a driving power source of the mobile device. Accordingly, research and development efforts have been actively carried out to improve the performance of lithium secondary batteries. [7]The lithium secondary battery is oxidized at the time of lithium ion in a state in which charging an organic electrolyte or polymer electrolyte between the positive electrode and the negative electrode made of a insert (intercalations) and the possible active desorption (deintercalation) of lithium ions to be inserted / desorbed from the positive electrode and the negative electrode and the electric energy is produced by a reduction reaction. [8]As a cathode active material of a lithium secondary battery is lithium cobalt oxide (LiCoO 2 ), lithium nickel oxide (LiNiO 2 ), lithium manganese oxide (LiMnO 2 or LiMn 2 O 4 and the like), a lithium iron phosphate compound (LiFePO 4 ), etc. are mainly used do. In addition, LiNiO 2 superior reversible capacity is maintained, while as a method for improving the low thermal stability, a method for substituting part of nickel (Ni), cobalt (Co) or manganese (Mn) has been proposed. However, a LiNi substituting a part of Ni with Co 1-α Co α O 2In the case of (α = 0.1 ~ 0.3) look excellent charge and discharge characteristics and life characteristics, low thermal stability. In addition, a nickel cobalt manganese-based lithium-metal composite oxide substituted by nickel (Ni), nickel-manganese-based lithium composite metal oxide substituting a part of the superior manganese (Mn) thermal stability, and manganese (Mn) and cobalt (Co) (or less simply low power characteristics for the term "NCM-based lithium oxide"), and there is a risk of dissolution and hence the battery characteristics deterioration of the metal element. Also, high the study to increase the content of nickel (Ni) in NCM-based lithium oxide to the energy density is made. However, the cycle characteristics on the long-term use if the high content of nickel (Ni) NCM-based lithium oxide is an extremely slow, problems, such as swelling, low stability caused by gas generation in the battery is not sufficiently resolved. [9]Thus, further increase the discharge capacity of the lithium secondary battery and, there is a need the resistance decreases, the output characteristics sought and new cathode materials developed ways to improve the cycle characteristics. [10]Detailed Description of the Invention SUMMARY [11] The present invention is to excellent charge and discharge characteristics, while the realization of high capacity and high output, to provide a superior chemical and secondary battery positive electrode active material capable of ensuring the thermal stability and excellent life characteristics at the same time. [12] Problem solving means [13] The invention includes a lithium-transition metal oxides, lithium transition metal oxides in 10g shown by differentiating the pH value of the acid (HCl) obtained by performing a dose titration using the pH of the 0.5M HCl differential graph (curve ERC) represents the three peaks, the y-axis (dpH / dml) value of the peak appearing in the smallest x-axis value of the three peak provides a -1.0 or less secondary battery positive electrode active material. [14] [15] Further, the present invention provides a positive electrode and a lithium secondary battery comprising the positive electrode active material. [16] Effects of the Invention [17] While secondary battery positive electrode active mujil according to the invention achieve a high capacity and high output with excellent charge and discharge characteristics, and at the same time it is possible to ensure the excellent chemical and thermal stability and excellent service life characteristics. [18] Brief Description of the Drawings [19] Figure 1 is one of the prepared positive electrode active material pH titration analysis graph according to the Examples and Comparative Examples. [20] Figure 2 is a review, life characteristics of secondary batteries including a cathode active material prepared in accordance with the graph in the examples and comparative examples. [21] Mode for the Invention [22] Hereinafter, the present invention will be described to assist understanding of the present invention in more detail. In this case, the specification and are should not be construed as limited to the term general and dictionary meanings used in the claims, the inventor has properly define terms to describe his own invention in the best way on the basis of the principle that can be interpreted based on the meanings and concepts corresponding to technical aspects of the present invention. [23] [24] Secondary battery positive electrode active material of the present invention is a lithium transition metal include oxides, lithium-transition graph showing differential by differentiating the pH value of the thus obtained acid (HCl) input by performing a pH titration to a metal oxide using a 10g of 0.5M HCl (ERC curve) in, indicates the three peaks, and the y-axis (dpH / dml) value of the peak appearing in the smallest x-axis value of the three peak -1.0 or less. [25] Has three peaks in the differential graph (curve ERC) according to the pH titration analysis as above, y-axis (dpH / dml) of the positive electrode active material satisfies the value of -1.0 or less of the first peak is a high capacity with excellent charge and discharge characteristics while realizing a high output and, at the same time it is possible to ensure the excellent chemical and thermal stability and excellent service life characteristics. [26] [27] The lithium transition metal oxide is the lithium-transition is typically used as a positive electrode active material may be a metal oxide, more preferably, nickel (Ni), cobalt (Co) and manganese any one or more transition metals selected from the group consisting of (Mn) It can be a lithium transition metal oxide containing the cation used. For example, lithium cobalt oxide (LiCoO 2 ), lithium nickel oxide (LiNiO 2 layered compound, and so on), or the general formula Li 1 + x1 Mn 2 - x1 O 4 (where, x1 is 0 ~ 0.33), LiMnO 3 , LiMn 2 O 3 , LiMnO 2 , such as lithium manganese oxide, of the general formula LiNi 1-x2 M1 x2 O 2(Wherein, M1 = Co, Mn, Al, Cu, Fe, Mg, and B or Ga, x2 = 0.01 ~ 0.3) Ni site type lithium nickel oxide, the formula LiMn expressed by 2 - x3 M2 x3 O 2 (where, M2 = a Co, Ni, Fe, Cr, Zn or Ta, x3 = 0.01 ~ 0.1) or Li 2 Mn 3 M3O 8 (here, M3 = Fe, lithium-manganese complex oxide which is represented by Co, Ni, Cu or Zn) , LiNi x4 Mn 2 - x4 O 4 (where, x4 = 0.01 ~ 1), lithium-manganese composite oxide, lithium iron phosphate compound of spinel structure (LiFePO represented by 4 there can be), such as, but is not limited to these. [28] Or, for as a positive electrode active material may include a lithium-transition metal composite oxide represented by the general formula (1). [29] Formula 1 [30] Li and Ni 1-xy Co x Mn y M z O 2 [31] Wherein, M is any one or more elements selected from the group consisting of Al, Zr, Ti, Mg, Ta, Nb, Mo and Cr, 0.9≤a≤1.5, 0≤x≤0.5, 0≤y≤0.5, a 0≤z≤0.1. [32] The positive electrode active material is more preferably a lithium cobalt oxide (LiCoO 2 ), lithium nickel oxide (LiNiO 2 ), lithium manganese oxide (LiMn 2 O 4 ), lithium iron phosphate compound (LiFePO 4 ) and lithium represented by the formula (1) transition can include any one or more selected from the group consisting of a metal composite oxide. [33] Lithium-transition metal composite oxide represented by the formula (1) may be the lithium transition metal of the total transition metal in the compound oxide of nickel (Ni) is a high concentration of nickel (high-nickel) based at least 60 mol% of the lithium-transition metal composite oxide. [34] [35] In a more specifically, the lithium-transition metal composite oxide of Formula 1, Li may be included in the content, that is 0.9≤a≤1.5 corresponding to a. If a is less than 0.9 and is a possibility to reduce the capacity, when it is more than 1.5 is discarded particles are sintered in the sintering step, it can be difficult to manufacture the positive electrode active material. When the sintering at the time of manufacture of the active material and also significantly improve the capacity characteristics of the positive electrode active material to the effect of Li content control considering the balance, the Li, and more preferably it may be contained in an amount of 1.0≤a≤1.15. [36] Also, in the lithium-transition metal composite oxide of the above formula 1, Ni is, for the content, for example, for the 1-xy, may be included in 0.6≤1-xy <1. More preferably, the Ni may be contained by 0.8≤1-xy≤0.9. Formula 1 when the lithium-transition metal composite oxide in the composition the content of Ni is more than 0.6 to secure a sufficient amount of Ni to contribute to charge and discharge can be made more high capacity. When the content of Ni 0.6 below may have a limit on the high-capacity implementation, in the composition in excess of 0.9 part of the Li site is substituted by Ni can not ensure sufficient Li amount to contribute to charge and discharge the charge-discharge capacity there is likely to decrease. [37] Also, in the lithium-transition metal composite oxide of the above formula 1, Co may be contained in an amount, that 0≤x≤0.5 corresponding to x. The lithium-transition metal composite oxide of the Co content in the above formula (1) the efficiency of the improved capacity characteristics in comparison to the increased cost may decrease if it exceeds 0.5. Considering that the remarkable effect of improving the capacity characteristics of the Co contained, the Co may be contained in an amount of 0.05≤x≤0.2 in detail. [38] Also, in the lithium-transition metal composite oxide of the formula 1, Mn may be contained in an amount of content, i.e., 0≤y≤0.5 corresponding to y. When a lithium-transition metal composite oxide in y in the formula (1) exceeds 0.5, there is more fear that the output characteristics and capacity characteristics of the battery decreases. [39] Also, in the lithium transition metal oxide of the formula (1), in order to improve battery characteristics through the distribution control within the transition metal element-cathode materials, Ni, is Co and / or may be in addition to Mn of the element, another element, i.e., M-doped . Wherein M may be one or more elements which are selected from the group consisting of a particular Al, Zr, Ti, Mg, Ta, Nb, Mo and Cr. Element of the M may be contained in an amount, that is, the content of 0≤z≤0.1 corresponding to z in a range which does not deteriorate the characteristics of the positive electrode active material. [40] [41] The positive electrode active material according to an embodiment of the present invention, the lithium transition may have a coating containing boron lithium oxide on the surface of metal oxide particles. [42] The coating unit LiBO as lithium boron oxide 2 may include, also, Li 2 B 4 O 7 and / or LiB 3 O 5 may further include a. More preferably, the coating unit at least 95 weight% LiBO 2 may include, and most preferably 95 to 99 wt% of LiBO 2 may comprise. The coating LiBO 2 When including less than 95% by weight, pH in the differential graph (ERC curve) according to the titrimetric analysis with the three peaks, the three peaks of the acid (HCl) days x-axis value for the input minimum the first peak is the y-axis (dpH / dml) value of -1.0 or less can be satisfied at that time. The coating add-LiBO 2 instead of Li 2 B 4 O 7 and / or LiB 3 O 5 of Even further comprising a boron lithium oxide, LiBO 2 only two peak content of the differential graph (ERC curve) according to the pH titration analysis is not satisfied for more than 95% by weight of the show, or three of the peak of the first peak y-axis (dpH / dml) value does not satisfy -1.0 or less. For pH cathode only two peaks in the differential graph (curve ERC) according to the titrimetric analysis is encountered or, the y-axis (dpH / dml) value of the first peak of the three peaks that do not meet the -1.0 or less active material, the discharge the capacity and the output characteristics are degraded, chemical and thermal stability is degraded, the life property may be degraded. [43] In addition, the coating portion at least the element B 500ppm, it is possible to more preferably from 1,000 to 2,000ppm. When the content of the element B is less than 500ppm chemical, thermal stability is lowered, and the life property may be degraded. [44] [45] The positive electrode active material according to an embodiment of the present invention as described above can be prepared by mixing the lithium-transition, and heat treating the metal oxide and the boron-containing compound. [46] The boron-containing compounds are H 3 BO 3 , B 2 O 3 , C 6 H 5 B (OH) 2 , (C 6 H 5 O) 3 B, [CH 3 (CH 2 ) 3 O] 3 B, C 13 H 19 BO 3 , C 3 H 9 B 3 O 6 , and (C 3 H 7 O) 3 to B may be at least one mixture selected from the group consisting of, and more preferably has three peaks in the differential graph (ERC curve) according to the pH titration analysis by the use of two or more mixture of said boron-containing compound, the first peak when the the x-axis value for the acid (HCl) input of the at least three peaks can be the y-axis (dpH / dml) values produce a positive electrode active material that satisfies -1.0 or less. [47] The boron-containing compound may be heat treated after mixing the lithium transition 500 to 2,000ppm, more preferably from 500 to 1,100ppm a B element content based on the total weight of the metal oxide. In addition, the mixing ratio of the mixture of the boron-containing compound of the heterogeneous 0.5: may satisfy a weight ratio of 0.5: 9.5 to 9.5. By using so as to satisfy the mixing ratio of the boron-containing compound of from 500 to 2,000ppm and two kinds of the boron-containing compound as described above form a coating, it has a pH of three peaks in the differential graph (curve ERC) according to the titrimetric analysis, the three the first peak when the the x-axis value for the peak of the acid (HCl) at least input may the y-axis (dpH / dml) values ​​produce a positive electrode active material that satisfies -1.0 or less. [48] [49] After mixing the mixture of the lithium transition metal oxide and the boron containing compound in a dry process as mentioned above, it is possible to heat treatment. At this time, the positive electrode active material according to an embodiment of the present invention is more preferably 300 to 500 ℃, can be heat-treated at 350 to 400 ℃. [50] When the case where the heat treatment temperature is lower than 300 ℃ boron-containing compound is a boron-containing compound remaining on the lithium transition metal oxide it is not sufficiently melted, or can not form a uniform coating even when converted to boron lithium oxide, exceeding 500 ℃ consists of the reaction is too fast because of a high temperature lithium transition can not form a uniform coating on the surface of the metal oxide, LiBO 2 is not included in at least 95 wt%, Li 2 B 4 O 7 or LiB 3 O 5 lots It can be generated. [51] [52] Thus prepared the positive electrode active material is more preferably a lithium transition has three peaks in the differential graph (curve ERC) according to the pH titration analysis, upon pH titration analysis of the metal oxide using a 10g of 0.5M HCl, the 3 the first peak when the the x-axis values ​​for the peaks acid (HCl) of the minimum amount is less than the y-axis (dpH / dml) value of -1.0, and may be more preferably from -1.5 to -2.5. A lithium secondary battery and the y-axis (dpH / dml) value of the differential graph has three peaks at (ERC curve), the first peak of the pH titration analysis using a positive electrode active material that satisfies -1.0 or less as described above, by, it can implement a lithium secondary battery having high capacity, high output and excellent life characteristics. [53] [54] According to another embodiment of the present invention provides a lithium secondary battery positive electrode and a lithium secondary battery comprising the positive electrode active material. [55] [56] Specifically, the positive electrode is formed on the positive electrode current collector and the positive electrode collector, and includes a positive electrode active material layer including the positive electrode active material. [57] In the positive electrode, the positive electrode current collector so long as it has suitable conductivity without causing chemical changes in the battery is not particularly limited, for example, stainless steel, aluminum, nickel, titanium, sintered carbon, or aluminum or carbon in the stainless steel surfaces , nickel, titanium, can be used as such as to a surface treatment or the like. In addition, the cathode current collector is typically may have a thickness of from 3 to 500㎛, may improve the adhesion of the positive electrode active material to form fine irregularities on the anode current collector surface. For example, films, sheets, foils, nets, porous structures, foams and non-woven fabrics or the like can be used in various forms. [58] [59] In addition, the positive electrode active material layer may include a conductive material and a binder with the above-described positive electrode active material. [60] In this case, as being used in order to impart conductivity to the conductive electrode material, it can be used without particular limitations in the constituted battery, as long as it has electron conductivity without causing chemical changes. Specific examples include graphite such as natural or artificial graphite; Carbon-based materials such as carbon black, acetylene black, Ketjen black, channel black, furnace black, lamp black, thermal black, carbon fibers; Copper, nickel, aluminum, silver metal powder or metal fiber and the like; Conductive whiskers such as zinc oxide and potassium titanate; Conductive metal oxides such as titanium oxide; Or polyphenylene may be made of conductive polymers such as alkylene derivative, a singly or as mixtures of two or more thereof may be used of these. The total positive electrode active material layer with the conductive material typically may comprise from 1 to 30% by weight relative to the weight. [61] [62] In addition, the binder serves to improve the adhesion of the entire positive electrode collector and the positive electrode active material, and adhesion between the positive electrode active material particle. Specific examples thereof include polyvinylidene fluoride (PVDF), vinylidene fluoride-hexafluoropropylene copolymer (PVDF-co-HFP), polyvinyl alcohol, polyacrylonitrile (polyacrylonitrile), woods (CMC as carboxymethylcellulose ), starch, hydroxypropylcellulose with a Woods, reproduced cellulose cellulose, polyvinylpyrrolidone, tetrafluoroethylene, polyethylene, polypropylene, ethylene-propylene-diene polymer (EPDM), sulfonated -EPDM, styrene-butadiene rubber (SBR), and a fluorine rubber, or the like of these various copolymers, a singly or in combination of two or more thereof may be used of these. The binder may comprise from 1 to 30% by weight relative to the total weight of the positive electrode active material layer. [63] [64] The anode may be prepared according to a conventional method of manufacturing the positive electrode except that the above positive electrode active material. Specifically, in the above-described positive electrode active material and, optionally, it may be produced after applying the composition for forming a positive electrode active material layer including a binder and a conductive agent on the positive electrode collector and dried and rolled. In this case the same as the positive electrode active material, binder, conductive material type and content discussed above. [65] The solvent may be a day for one commonly used in the art, and dimethyl cell width side (dimethyl sulfoxide, DMSO), isopropyl alcohol (isopropyl alcohol), N- methylpyrrolidone (NMP), acetone (acetone) or water, etc., and there is a singly or as mixtures of two or more thereof may be used of these. The amount of the solvent is in about in consideration of the coating thickness of the slurry, the production yield by dissolving or dispersing the positive electrode active material, conductive material and a binder, so as to have a subsequent viscosity that can indicate the excellent thickness uniformity upon coating for the positive electrode produced sufficient Do. [66] [67] Further, as another method, the positive electrode may be manufactured by laminating a film obtained by peeling from the substrate by the cast-forming the positive electrode coating composition on a separate support, and then on the positive electrode collector. [68] [69] According to another embodiment of the present invention, the electrochemical device comprising the anode are provided. The electrochemical device may be specifically the like battery or capacitor, may be more particularly to a lithium secondary battery. [70] [71] The lithium secondary battery is specifically positive electrode, a negative electrode for the anode and for facing position, comprising a separator and an electrolyte interposed between the positive electrode and the negative electrode, the positive electrode is the same as the above. Further, the lithium secondary battery may optionally further include a sealing member for sealing the battery container and the battery container housing the electrode assembly of the cathode, anode, separator. [72] [73] In the above lithium secondary battery, the negative electrode comprises a negative electrode active material layer on the negative electrode current collector and the anode current collector. [74] On the surface of the negative electrode current collector without causing chemical changes in the battery if it has suitable conductivity not particularly limited, for example, copper, stainless steel, aluminum, nickel, titanium, sintered carbon, copper or stainless steel surface-treated with carbon, nickel, titanium or silver, and aluminum-cadmium alloys. In addition, the anode current collector is typically may have a thickness of from 3 to 500㎛, it is also possible Similar to the cathode current collector, enhance the bonding strength between the negative electrode active material to form fine irregularities on the current collector surface. For example, films, sheets, foils, nets, porous structures, foams and non-woven fabrics or the like can be used in various forms. [75] [76] The negative electrode active material layer optionally comprises a binder and a conductive material with the negative electrode active material. The negative electrode active material layer is the negative electrode active material on a negative electrode current collector by way of example, and by selectively casting for the binder and the conductive material coating the composition for a negative electrode formed comprising a dried, or the negative electrode forming composition on a separate support, and then , and a film obtained by peeling from the support may be made by lamination on the negative electrode collector. [77] [78] The cathode active material has a reversible intercalation and de-intercalation of lithium can be used a compound. Carbonaceous material such as concrete examples of artificial graphite, natural graphite, graphitized carbon fibers, amorphous carbon; Si, Al, Sn, Pb, Zn, Bi, In, Mg, Ga, Cd, Si alloy, Sn-alloy, or Al alloy, a lithium alloy and a metal compound to be; SiOx (0

Documents

Application Documents

# Name Date
1 201917033974-IntimationOfGrant11-01-2024.pdf 2024-01-11
1 201917033974.pdf 2019-08-23
2 201917033974-PatentCertificate11-01-2024.pdf 2024-01-11
2 201917033974-STATEMENT OF UNDERTAKING (FORM 3) [23-08-2019(online)].pdf 2019-08-23
3 201917033974-POWER OF AUTHORITY [23-08-2019(online)].pdf 2019-08-23
3 201917033974-8(i)-Substitution-Change Of Applicant - Form 6 [18-11-2022(online)].pdf 2022-11-18
4 201917033974-FORM 1 [23-08-2019(online)].pdf 2019-08-23
4 201917033974-ASSIGNMENT DOCUMENTS [18-11-2022(online)].pdf 2022-11-18
5 201917033974-PA [18-11-2022(online)].pdf 2022-11-18
5 201917033974-DRAWINGS [23-08-2019(online)].pdf 2019-08-23
6 201917033974-DECLARATION OF INVENTORSHIP (FORM 5) [23-08-2019(online)].pdf 2019-08-23
6 201917033974-CLAIMS [02-09-2022(online)].pdf 2022-09-02
7 201917033974-COMPLETE SPECIFICATION [23-08-2019(online)].pdf 2019-08-23
7 201917033974-COMPLETE SPECIFICATION [02-09-2022(online)].pdf 2022-09-02
8 201917033974-RELEVANT DOCUMENTS [29-08-2019(online)].pdf 2019-08-29
8 201917033974-DRAWING [02-09-2022(online)].pdf 2022-09-02
9 201917033974-FER_SER_REPLY [02-09-2022(online)]-1.pdf 2022-09-02
9 201917033974-FORM 13 [29-08-2019(online)].pdf 2019-08-29
10 201917033974-FER_SER_REPLY [02-09-2022(online)].pdf 2022-09-02
10 abstract.jpg 2019-09-11
11 201917033974-FORM 3 [19-02-2020(online)].pdf 2020-02-19
11 201917033974-OTHERS [02-09-2022(online)]-1.pdf 2022-09-02
12 201917033974-OTHERS [02-09-2022(online)].pdf 2022-09-02
12 201917033974-Verified English translation [20-02-2020(online)].pdf 2020-02-20
13 201917033974-PETITION UNDER RULE 137 [02-09-2022(online)].pdf 2022-09-02
13 201917033974-Proof of Right [20-02-2020(online)].pdf 2020-02-20
14 201917033974-FORM 3 [10-08-2022(online)].pdf 2022-08-10
14 201917033974-FORM 3 [20-02-2020(online)].pdf 2020-02-20
15 201917033974-certified copy of translation [20-02-2020(online)].pdf 2020-02-20
15 201917033974-FER.pdf 2022-03-04
16 201917033974-FORM 18 [27-08-2021(online)].pdf 2021-08-27
16 201917033974-OTHERS-270220.pdf 2020-02-29
17 201917033974-OTHERS-270220-1.pdf 2020-02-29
17 201917033974-FORM 3 [19-08-2021(online)].pdf 2021-08-19
18 201917033974-FORM 3 [14-08-2020(online)].pdf 2020-08-14
18 201917033974-OTHERS-270220-.pdf 2020-02-29
19 201917033974-Correspondence-270220.pdf 2020-02-29
20 201917033974-FORM 3 [14-08-2020(online)].pdf 2020-08-14
20 201917033974-OTHERS-270220-.pdf 2020-02-29
21 201917033974-FORM 3 [19-08-2021(online)].pdf 2021-08-19
21 201917033974-OTHERS-270220-1.pdf 2020-02-29
22 201917033974-FORM 18 [27-08-2021(online)].pdf 2021-08-27
22 201917033974-OTHERS-270220.pdf 2020-02-29
23 201917033974-certified copy of translation [20-02-2020(online)].pdf 2020-02-20
23 201917033974-FER.pdf 2022-03-04
24 201917033974-FORM 3 [20-02-2020(online)].pdf 2020-02-20
24 201917033974-FORM 3 [10-08-2022(online)].pdf 2022-08-10
25 201917033974-Proof of Right [20-02-2020(online)].pdf 2020-02-20
25 201917033974-PETITION UNDER RULE 137 [02-09-2022(online)].pdf 2022-09-02
26 201917033974-OTHERS [02-09-2022(online)].pdf 2022-09-02
26 201917033974-Verified English translation [20-02-2020(online)].pdf 2020-02-20
27 201917033974-FORM 3 [19-02-2020(online)].pdf 2020-02-19
27 201917033974-OTHERS [02-09-2022(online)]-1.pdf 2022-09-02
28 201917033974-FER_SER_REPLY [02-09-2022(online)].pdf 2022-09-02
28 abstract.jpg 2019-09-11
29 201917033974-FER_SER_REPLY [02-09-2022(online)]-1.pdf 2022-09-02
29 201917033974-FORM 13 [29-08-2019(online)].pdf 2019-08-29
30 201917033974-DRAWING [02-09-2022(online)].pdf 2022-09-02
30 201917033974-RELEVANT DOCUMENTS [29-08-2019(online)].pdf 2019-08-29
31 201917033974-COMPLETE SPECIFICATION [23-08-2019(online)].pdf 2019-08-23
31 201917033974-COMPLETE SPECIFICATION [02-09-2022(online)].pdf 2022-09-02
32 201917033974-DECLARATION OF INVENTORSHIP (FORM 5) [23-08-2019(online)].pdf 2019-08-23
32 201917033974-CLAIMS [02-09-2022(online)].pdf 2022-09-02
33 201917033974-PA [18-11-2022(online)].pdf 2022-11-18
33 201917033974-DRAWINGS [23-08-2019(online)].pdf 2019-08-23
34 201917033974-FORM 1 [23-08-2019(online)].pdf 2019-08-23
34 201917033974-ASSIGNMENT DOCUMENTS [18-11-2022(online)].pdf 2022-11-18
35 201917033974-POWER OF AUTHORITY [23-08-2019(online)].pdf 2019-08-23
35 201917033974-8(i)-Substitution-Change Of Applicant - Form 6 [18-11-2022(online)].pdf 2022-11-18
36 201917033974-STATEMENT OF UNDERTAKING (FORM 3) [23-08-2019(online)].pdf 2019-08-23
36 201917033974-PatentCertificate11-01-2024.pdf 2024-01-11
37 201917033974-IntimationOfGrant11-01-2024.pdf 2024-01-11
37 201917033974.pdf 2019-08-23

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