Sign In to Follow Application
View All Documents & Correspondence

Additive For Non Aqueous Electrolyte Lithium Secondary Battery Non Aqueous Electrolyte Comprising Same And Lithium Secondary Battery

Abstract: The present invention relates to: an additive for a non-aqueous electrolyte the additive enabling the formation of a stable film on an electrode surface and inhibiting the generation of metallic foreign bodies causing side-effects within a battery; a lithium secondary battery non-aqueous electrolyte comprising same; and a lithium secondary battery having same.

Get Free WhatsApp Updates!
Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
15 October 2018
Publication Number
29/2019
Publication Type
INA
Invention Field
ELECTRICAL
Status
Email
ranjna.dutt@remfry.com
Parent Application
Patent Number
Legal Status
Grant Date
2023-03-28
Renewal Date

Applicants

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

Inventors

1. YU, Sung Hoon
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
2. LEE, Kyung Mi
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
3. KIM, Shul Kee
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
4. LEE, Hyun Yeong
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
5. KANG, Yoo Sun
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122

Specification

1]Mutual citations and related application (s) [2]This application claims the benefit of priority based on 123 dates Korea Patent Application No. 2017-0010223 January 2017, and all information disclosed in the literature of the Korea patent application are included as part of the specification. [3] [4] Art [5] The present invention relates to a lithium secondary battery and a non-aqueous electrolyte lithium secondary battery of additives, comprising the same for the non-aqueous electrolyte. BACKGROUND [6] Recently with the development of the ICT industry in accordance with the miniaturization of electronic devices, lightweight, portable, and required thickness painter, it has increased the demand for high energy density of the battery used as a power source for these electronic devices. [7] Lithium batteries, in particular lithium-ion battery (lithium ion battery: LIB) is a battery that can meet these demands best, high energy density design is easy to adopt as a power source for many portable applications. Recently, studies to maintain good performance while employed as a power source, as well as room temperature even in a severe external environment than the high temperature or low temperature environment for the lithium ion battery is an electric vehicle or a power storage for addition to a small electronic apparatus such as a portable IT devices that are emerging. [8] On the other hand, lithium secondary batteries are the most and the negative electrode and a positive electrode that can occlude and release lithium ions, a mixed carbonate-based organic solvent to LiPF 6 , LiBF 4 is a lithium salt, such as composed of a non-aqueous electrolyte dissolving a suitable amount. [9] The lithium secondary battery as the charge and discharge proceed, the positive electrode active material is a structural collapse is eluted metal ions from the positive electrode surface. The eluted metal ions are electrodeposited (electrodeposition) in the negative electrode deteriorates the cathode. This degradation is the potential of the positive electrode is increased or, shows a tendency to be accelerated during high temperature exposure of the battery. [10] To solve this problem, the non-aqueous protective coatings, i.e. a method of adding a compound capable of forming a SEI film on the anode surface in the electrolyte solution has been proposed. However, as other side effects caused by the compounds added to the electrolyte solution, it can be another problem that the overall performance of the secondary battery decreases occurs. [11] Thus, with minimal side effects, have been developed continuously required for a non-aqueous electrolyte containing an additive in the performance and reliability of the battery can be improved. [12] Further, the lithium secondary battery is included in the raw material or a low voltage developed due to the foreign matter to be incorporated in the process (voltage drop) occurs, and this phenomenon is intensified due to the cell within the microscopic short circuit, a disadvantage discard the cell driving stop have. This disadvantage is greater because it is lost during the manufacturing process defects in the final step. [13] [14] Prior Art Document [15] Japanese Laid-Open Patent Application No. 2001-256995 No. [16] U.S. Patent No. 7,033,707 No. [17] Japanese Laid-Open Patent Application No. 2003-059529 No. Detailed Description of the Invention SUMMARY [18] The first object of the present invention is an additive for a non-aqueous electrolyte that can suppress the side effects caused by formation with a stable film on the electrode surface in the battery to provide a metal foreign substance. [19] The second object of the present invention is to provide a lithium secondary battery, a non-aqueous electrolyte comprising the additive for a non-aqueous electrolyte. [20] The third object of the present invention is to provide a lithium secondary battery comprising the non-aqueous electrolyte lithium secondary battery. Problem solving means [21] In one embodiment of the present invention for achieving the above object, [22] To provide at least one additive for a non-aqueous electrolyte selected from the group consisting of the compound represented by Formula 1 and Formula 2. [23] (I) [24] [25] (II) [26] [27] In the formula (1) or (2), [28] R 1 and R 2 are each independently hydrogen, alkoxy of 1 to 6 carbon atoms alkyl group, or a C 1 -C 6, [29] R 3 is an alkylene group having 1 to 3 carbon atoms, [30] R 4 and R 6 are each independently hydrogen, C 1 -C 6 alkyl group, having 6 to 18 carbon atoms of the aryl group, having 5 to 8 heterocycloalkyl group, an alkenyl group having 2 to 4 carbon atoms, or 2 to 4 carbon atoms in the alkynyl and the group, [31] R 5 is an alkyl group having 2 to 4 carbon atoms containing an alkyl group or an ether group having 1 to 6 carbon atoms, [32] and n is any integer of 0 to 3. [33] [34] At this time, in the compound represented by the formula (1), [35] R 1 is hydrogen or an alkyl group having 1 to 6 carbon atoms, R 2 is hydrogen or alkoxy of 1 to 6 carbon atoms, R 3 is an alkylene group of a carbon number of 1 to 3, R 4 is an alkyl group having 1 to 6 carbon atoms, having a carbon number of 6 to 18, an aryl group, an alkynyl group having a carbon number of 5-8 heterocycloalkyl group, or 2 to 4 carbon atoms in the, n may be an integer any one of 0 to 3. [36] Specifically, the compound represented by the formula (1) may be at least one selected from the group consisting of the compound represented by the formula 1a to 1g to. [37] (Formula 1a) [38] [39] [40] (Formula 1b) [41] [42] [43] (Formula 1c) [44] [45] [46] (Formula 1d) [47] [48] [49] (Formula 1e) [50] [51] [52] (Formula 1f) [53] [54] [55] (Formula 1g) [56] [57] [58] Further, in the compound represented by Formula 2, R 5 is an alkyl group having 2 to 4 carbon atoms containing an alkyl group or an ether group having 1 to 6 carbon atoms, R 6 may be an alkyl group having 1 to 6 carbon atoms. [59] Specifically, the compound represented by the above formula (2) may be at least one selected from the group consisting of the compound represented by the formula 2a to 2f to. [60] (Formula 2a) [61] [62] [63] (Formula 2b) [64] [65] [66] (Formula 2c) [67] [68] [69] (Formula 2d) [70] [71] [72] (Formula 2e) [73] [74] [75] (Formula 2f) [76] [77] [78] In one embodiment of the present invention [79] A lithium salt; An organic solvent; And an additive for a non-aqueous electrolyte of the present invention, [80] The additive provides a non-aqueous electrolyte lithium secondary battery is at least at least one compound represented by Formula 1 and Formula 2. [81] The additive for a non-aqueous electrolyte is from 0.01% to 10% by weight, based on the non-aqueous electrolyte is the total content, it may be included in particular from 0.5% to 10% by weight. [82] [83] In one embodiment of the present invention [84] In the negative electrode for a lithium secondary battery having a positive electrode and a nonaqueous electrolyte, [85] The non-aqueous electrolyte provides a rechargeable lithium battery will be a non-aqueous electrolyte lithium secondary battery of the present invention. Effects of the Invention [86] In accordance with one embodiment of the present invention, by using as an additive for non-aqueous electrolyte is a compound containing a group propargyl (propargyl) having a metal ion adsorption performance, it is possible to suppress the metal contaminants generated, which could lead to adverse effects in the battery, it is possible to form a stable film on the negative electrode and the positive electrode surface to produce a non-aqueous electrolytic solution that can prevent the cell swelling (swelling) development. Further, it is possible to manufacture a lithium secondary battery such as a cycle life characteristic at high temperatures improved by including them. Brief Description of the Drawings [87] Following figures attached to this specification is intended to illustrate preferred embodiments of the present invention, the components which serve to further understand the teachings of the present invention with the content of the above-described invention, the invention is only to details set forth in those figures It not limited to the analysis. [88] 1 is a graph showing the results of the measurement of the cyclic voltammetry of the non-aqueous electrolyte according to Test Example 1 of the present invention. Best Mode for Carrying Out the Invention [89] A detailed explanation follows below with more detail the present invention. [90] Herein and in the terms or words used in the claims is general and not be construed as limited to the dictionary meanings are not, the inventor can adequately define terms to describe his own invention in the best way on the basis of the principle that the interpreted based on the meanings and concepts corresponding to technical aspects of the present invention. [91] [92] Typically, when the overcharging to occur with respect to the secondary battery, as lithium ions are released from the positive electrode in an amount in excess is the structure in an unstable state of the positive electrode active material. When the oxygen is released from the positive electrode active material, the released oxygen will cause a decomposition reaction of the electrolytic solution. In particular, when the elution of metal ions from the anode to increase at a high temperature condition, the eluted metal ions are precipitated on the anode surface is low voltage phenomenon occurs. The low-voltage phenomenon is included in the raw material for a lithium battery, or is generated by the metal foreign substance to be incorporated in the process. That is, the foreign substances are eluted as the charge deposited on the anode surface to generate a microscopic short circuit between an anode and a cathode. This short circuit is a low voltage phenomenon that the voltage of the cell decreases is generated in the battery performance is lowered. [93] In the present invention, in order to improve these problems, by not only forms a film on the electrode surface, provides a non-aqueous electrolyte comprising a compound containing a profile chewy having a metal ion adsorbing performance as an additive, cause side effects in the battery a metal foreign object that may occur can be suppressed. [94] In the present invention, by including the nonaqueous electrolyte additives, and provides a non-aqueous electrolyte lithium secondary battery capable of improving the overcharge safety of the electrolyte. [95] Further, in the present invention, by including the non-aqueous electrolytic solution providing a high voltage charged in the cycle characteristics and high-temperature storage performance is improved rechargeable lithium battery. [96] [97] Specifically, in one embodiment of the present invention [98] To provide at least one additive for a non-aqueous electrolyte selected from the group consisting of the compound represented by Formula 1 and Formula 2. [99] (I) [100] [101] (II) [102] [103] In the formula (1) or (2), [104] R 1 and R 2 are each independently hydrogen, alkoxy of 1 to 6 carbon atoms alkyl group, or a C 1 -C 6, [105] R 3 is an alkylene group having 1 to 3 carbon atoms, [106] R 4 and R 6 are each independently hydrogen, C 1 -C 6 alkyl group, having 6 to 18 carbon atoms of the aryl group, having 5 to 8 heterocycloalkyl group, an alkenyl group having 2 to 4 carbon atoms, or 2 to 4 carbon atoms in the alkynyl and the group, [107] R 5 is an alkyl group having 2 to 4 carbon atoms containing an alkyl group or an ether group having 1 to 6 carbon atoms, [108] and n is any integer of 0 to 3. [109] [110] Specifically, in the compound represented by the above formula 1, R 1 is hydrogen or an alkyl group having 1 to 6, R 2 is hydrogen or alkoxy having 1 to 6, R 3 is an alkylene group having 1 to 3 carbon atoms, R 4 is an alkynyl group having 1 to 6 carbon atoms, an alkyl group, having 6 to 18 carbon atoms of the aryl group, having 5 to 8 heterocycloalkyl group, or 2 to 4 carbon atoms in the, n may be an integer any one of 0 to 3. [111] In this case, the aryl groups from phenyl group, a halophenyl group, a benzyl group, a halo-benzyl, tolyl (tolyl) group, a naphthyl group, a trihalomethyl a phenyl group, a trihalomethyl-phenyl, halo-nitrobenzyl, an anthryl group, and the group consisting phenanthryl is selected may include any of them. [112] More particularly, the compound is the typical example of the formula (1) is to be mentioned at least one selected from the group consisting of the compound represented by the formula 1a to 1g. [113] (Formula 1a) [114] [115] [116] (Formula 1b) [117] [118] [119] (Formula 1c) [120] [121] [122] (Formula 1d) [123] [124] [125] (Formula 1e) [126] [127] [128] (Formula 1f) [129] [130] [131] (Formula 1g) [132] [133] [134] Further, in the compound represented by Formula 2, R 5 is an alkyl group having 2 to 4 carbon atoms containing an alkyl group or an ether group having 1 to 6 carbon atoms, R 6 may be an alkyl group having 1 to 6 carbon atoms. [135] Specifically, a compound represented by the general formula (2) is for example the representative may include at least one selected from the group consisting of the compound represented by the formula 2a to 2f. [136] (Formula 2a) [137] [138] [139] (Formula 2b) [140] [141] [142] (Formula 2c) [143] [144] [145] (Formula 2d) [146] [147] [148] (Formula 2e) [149] [150] [151] (Formula 2f) [152] [153] [154] In one embodiment of the present invention [155] A lithium salt; An organic solvent; And [156] Provides a non-aqueous electrolyte lithium secondary battery comprising at least one compound of the formula 1 and compounds represented by the formula (2). [157] [158] Formula 1 and from about 0.01 to 10% by weight, formula (2) based on the total weight of at least one compound is a non-aqueous electrolyte solution of the compound represented by the following, it may be included in particular 0.5 to 10% by weight. If the amount of the compound and less than 0.01% by weight of the stabilized SEI film-forming effect negligible, the resistance is increased due to the excess additives it may be caused when it exceeds 10% by weight. [159] [160] Typically the lithium secondary battery is a kind of passive film is formed by electrochemical oxidation decomposition reaction of the electrolytic solution in place and, that is activated to position the combination of the anode surface of the cell at the time of charge and discharge exists. It increases the insertion impedance for the (co-intercalation) of lithium ions in the passivation film is a cathode active material. Also, when repeating the process of charging and discharging the positive electrode active material of LiCoO 2 , LiMn 2 O 4 , or LiNiO 2 , such as structural collapse naejineun chemical dissolution reaction is taking place from the positive electrode active material Co, Mn, Ni, Fe, and Al ions in the electrolytic solution of this is eluted. This reaction can be continued, of course, the eluted metal ions in degradation of the cathode itself, have been deposited at the cathode surface resulting in the phenomenon of electro-deposition. [161] Thus the metal deposited on the cathode is generally exhibit greater reactivity to the electrolyte. Accordingly, since the movement of lithium ions do not smoothly performed, the reversible lithium amount is non-reversible reaction proceeds according to the charging and discharging due to a decrease and increase in, and consequently results in a capacity of the battery, and charge and discharge efficiency is lowered. [162] Thus, the present invention provides at least one or more of the compounds represented by Co, Mn, Ni, Fe, a high general formula (1) or (2) the tendency to form a complex with metal ions such as Al as electrolyte additive. That is, the compound represented by the above formula (1) or (2) provided by the present invention, metal ions and the absorption is a profile chewy, and an oxygen atom containing the easy-triple bond , since it contains, the charge and discharge when structures of the positive electrode active material and in combination with the disruption of the metal ion eluted from the anode by a chemical dissolution reaction due to an electrolyte naejineun form a complex, it is possible to form a stable ion conductive film on the anode surface. [163] Further, the formula (I) or the compound represented by Formula 2 of the present invention may be to even without forming a film and the adsorption of metal ions eluted from the positive electrode, suppressing the metal ions are electrodeposited on the cathode. Accordingly, various such as those formula I, or if they include a non-aqueous electrolyte containing a compound represented by the formula (2), to facilitate lithium from the cathode at high temperatures, as will be described later occlusion and release and, normal and high-temperature cycle life characteristics of secondary batteries performance may provide a significant improvement in the secondary battery. [164] On the other hand, it is rarely used as an electrolyte solvent because of its low chemical stability when the ketone-based organic solvent. Thus, an ester (-CO-OR in compounds of formula (2) 6 ) group in place of the alkylene group bonded to the α position of the carbonyl ketone group (-CO-AOR 6 when containing), chemical warfare safety may be degraded have. In addition, R in the compound represented by the formula (2) 6 if the groups are labile ether oxidation to the position further comprises one or more, the stability of the non-aqueous electrolyte is reduced, the viscosity may be increased. [165] [166] Further, in the non-aqueous liquid electrolyte according to one embodiment of the present invention, the non-aqueous organic solvent and lithium salt may include the types of organic solvents and lithium salts used in the nonaqueous electrolyte solution in manufacturing a conventional lithium secondary battery, have. In this case, their contents may also comprise in general the appropriate changes to the extent possible use. [167] Specifically, the lithium salt may be used, without limitation, those which are commonly used in the electrolyte, such as Li cation + is to include, and the anion F - , Cl - , Br - , I - , NO 3 - , N (CN) 2 - , BF 4 - , ClO 4 - , AlO 4 - , AlCl 4 - , PF 6 - , SbF 6 - , AsF 6 - , BF 2 C 2 O 4 -, BC 4O 8 -, (CF 3) 2PF 4 -, (CF 3) 3PF 3 -, (CF 3) 4PF 2 -, (CF 3) 5PF -, (CF 3) 6P -, CF 3SO 3 -, C 4F 9SO 3 -, CF 3CF 2SO 3 -, (CF 3SO 2) 2N -, (F 2SO 2) 2N -, CF 3CF 2(CF 3) 2CO -, (CF 3SO 2) 2CH -, CF 3(CF 2) 7SO 3 - , CF 3 CO 2 - , CH 3 CO 2 - , SCN - , and (CF 3 CF 2 SO 2 ) 2 N - can include at least one selected from the group consisting of. The lithium salt according to one or required may be used by mixing two or more. The lithium salt is usually be appropriately changed within the range supported by, but there may be included at a concentration of 0.8 M to 2M in the electrolyte to obtain a corrosion resistant film-forming effect of the optimum electrode surface. [168] [169] The organic solvent contained in the non-aqueous liquid electrolyte of the present invention may be used without limitation those commonly used in a lithium secondary battery electrolyte, for example, an ether compound, an ester compound, an amide compound, a linear carbonate compound, or a cyclic carbonate compound each may be used alone or in combination of two or more kinds or the like. Among them, typically it may comprise a cyclic carbonate compound, a linear carbonate compound, or mixtures thereof. [170] Specific examples of the cyclic carbonate compound is ethylene carbonate (ethylene carbonate, EC), propylene carbonates (propylene carbonate, PC), 1,2-butylene carbonate, 2,3-butylene carbonate, 1,2-pentylene carbonate, 2,3 pen there is any one or a mixture of two or more of those selected from the group consisting of ethylene carbonate, vinylene carbonate, and fluoro-ethylene carbonate (FEC). Further, specific examples of the linear carbonate compounds include the group consisting of dimethyl carbonate (dimethyl carbonate, DMC), diethyl carbonate (diethyl carbonate, DEC), dipropyl carbonate, ethyl methyl carbonate (EMC), methyl propyl carbonate and ethyl propyl carbonate the one or the like of two or more of a mixture thereof is selected from may be used as a representative, and the like. [171] In particular, the carbonate-based organic solvent of the cyclic carbonate of ethylene carbonate and propylene carbonate may be preferably used because well dissociate lithium salts in the high dielectric constant is used as the organic solvent, a high-viscosity electrolyte, and such cyclic carbonates as dimethyl carbonate and diethyl carbonate in such as low viscosity, the use of a mixture of low dielectric constant linear carbonate in a suitable ratio can make the electrolytic solution having high electric conductivity may be used more preferably. [172] Further, the ether compound of said organic solvent is dimethyl ether, diethyl ether, dipropyl ether, methyl ethyl ether, methyl propyl ether, ethyl propyl any one selected from the group consisting of ether, or to use a mixture of two or more of these However, the embodiment is not limited thereto. [173] And linear esters such as the ester compound of the organic solvent is methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, butyl propionate; And γ- butyrolactone, γ- ballet as lactone, γ- caprolactone, any one can be used or a mixture of two or more of those selected from the group consisting of a cyclic ester such as a lactone, ε- caprolactone as σ- ballet However, the embodiment is not limited thereto. [174] [175] In addition, in one embodiment of the invention, [176] It provides a separator and a lithium secondary battery comprising a non-aqueous liquid electrolyte of the present invention interposed between the positive electrode and the negative electrode, the positive electrode and the negative electrode. [177] Specifically, the lithium secondary battery of the present invention can be produced by injecting a non-aqueous liquid electrolyte of the present invention, the electrode structure comprising a separator interposed between the positive electrode, a negative electrode and the positive electrode and the negative electrode. At this time, the positive electrode, negative electrode and separator constituting the electrode structure may be used in all the things that were commonly used in manufacturing the lithium secondary battery. [178] The positive electrode may be prepared and then coated with a positive electrode slurry containing the positive electrode active material, a binder, a conductive material and a solvent or the like onto the positive electrode current collector, dried and rolled. [179] The cathode current collector is so long as it has suitable conductivity without causing chemical changes in the fabricated battery is not particularly limited, for example, stainless steel, aluminum, nickel, titanium, sintered carbon, or carbon on the surface of aluminum or stainless steel , nickel, titanium, can be used as such as to a surface treatment or the like. [180] The positive electrode active material is a reversible intercalation and de capable of intercalation compounds of lithium, specifically, it may comprise a lithium composite metal oxide containing at least one metal and lithium such as cobalt, manganese, nickel or aluminum have. More specifically, the lithium composite metal oxide is the lithium-manganese-based oxide (for example, LiMnO 2 , LiMn 2 O 4 and the like), lithium-cobalt oxide (e.g., LiCoO 2 and the like), lithium-nickel-based oxide (for example, LiNiO 2 and the like), lithium-nickel-manganese-based oxide (for example, LiNi 1 - Y Mn Y O 2 (where, 0

Documents

Application Documents

# Name Date
1 201817039053-IntimationOfGrant28-03-2023.pdf 2023-03-28
1 201817039053.pdf 2018-10-15
2 201817039053-PatentCertificate28-03-2023.pdf 2023-03-28
2 201817039053-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [15-10-2018(online)].pdf 2018-10-15
3 201817039053-STATEMENT OF UNDERTAKING (FORM 3) [15-10-2018(online)].pdf 2018-10-15
3 201817039053-Response to office action [29-12-2022(online)].pdf 2022-12-29
4 201817039053-PRIORITY DOCUMENTS [15-10-2018(online)].pdf 2018-10-15
4 201817039053-8(i)-Substitution-Change Of Applicant - Form 6 [23-11-2022(online)].pdf 2022-11-23
5 201817039053-FORM 1 [15-10-2018(online)].pdf 2018-10-15
5 201817039053-ASSIGNMENT DOCUMENTS [23-11-2022(online)].pdf 2022-11-23
6 201817039053-PA [23-11-2022(online)].pdf 2022-11-23
6 201817039053-DRAWINGS [15-10-2018(online)].pdf 2018-10-15
7 201817039053-Written submissions and relevant documents [21-11-2022(online)].pdf 2022-11-21
7 201817039053-DECLARATION OF INVENTORSHIP (FORM 5) [15-10-2018(online)].pdf 2018-10-15
8 201817039053-FORM-26 [10-11-2022(online)].pdf 2022-11-10
8 201817039053-COMPLETE SPECIFICATION [15-10-2018(online)].pdf 2018-10-15
9 201817039053-Correspondence to notify the Controller [02-11-2022(online)].pdf 2022-11-02
9 abstract.jpg 2018-11-28
10 201817039053-US(14)-HearingNotice-(HearingDate-10-11-2022).pdf 2022-10-11
10 201817039053-Verified English translation (MANDATORY) [03-12-2018(online)].pdf 2018-12-03
11 201817039053-Proof of Right (MANDATORY) [03-12-2018(online)].pdf 2018-12-03
11 201817039053-Response to office action [24-03-2022(online)].pdf 2022-03-24
12 201817039053-FER.pdf 2021-10-18
12 201817039053-OTHERS-041218.pdf 2018-12-10
13 201817039053-CLAIMS [25-08-2021(online)].pdf 2021-08-25
13 201817039053-OTHERS-041218-.pdf 2018-12-10
14 201817039053-CORRESPONDENCE [25-08-2021(online)].pdf 2021-08-25
14 201817039053-Correspondence-041218.pdf 2018-12-10
15 201817039053-Correspondence-041218-.pdf 2018-12-10
15 201817039053-DRAWING [25-08-2021(online)].pdf 2021-08-25
16 201817039053-FER_SER_REPLY [25-08-2021(online)].pdf 2021-08-25
16 201817039053-FORM 3 [18-03-2019(online)].pdf 2019-03-18
17 201817039053-OTHERS [25-08-2021(online)].pdf 2021-08-25
17 201817039053-FORM 3 [17-12-2019(online)].pdf 2019-12-17
18 201817039053-FORM 18 [31-07-2020(online)].pdf 2020-07-31
18 201817039053-FORM 3 [09-02-2021(online)].pdf 2021-02-09
19 201817039053-FORM 18 [31-07-2020(online)].pdf 2020-07-31
19 201817039053-FORM 3 [09-02-2021(online)].pdf 2021-02-09
20 201817039053-FORM 3 [17-12-2019(online)].pdf 2019-12-17
20 201817039053-OTHERS [25-08-2021(online)].pdf 2021-08-25
21 201817039053-FER_SER_REPLY [25-08-2021(online)].pdf 2021-08-25
21 201817039053-FORM 3 [18-03-2019(online)].pdf 2019-03-18
22 201817039053-Correspondence-041218-.pdf 2018-12-10
22 201817039053-DRAWING [25-08-2021(online)].pdf 2021-08-25
23 201817039053-Correspondence-041218.pdf 2018-12-10
23 201817039053-CORRESPONDENCE [25-08-2021(online)].pdf 2021-08-25
24 201817039053-CLAIMS [25-08-2021(online)].pdf 2021-08-25
24 201817039053-OTHERS-041218-.pdf 2018-12-10
25 201817039053-FER.pdf 2021-10-18
25 201817039053-OTHERS-041218.pdf 2018-12-10
26 201817039053-Proof of Right (MANDATORY) [03-12-2018(online)].pdf 2018-12-03
26 201817039053-Response to office action [24-03-2022(online)].pdf 2022-03-24
27 201817039053-US(14)-HearingNotice-(HearingDate-10-11-2022).pdf 2022-10-11
27 201817039053-Verified English translation (MANDATORY) [03-12-2018(online)].pdf 2018-12-03
28 201817039053-Correspondence to notify the Controller [02-11-2022(online)].pdf 2022-11-02
28 abstract.jpg 2018-11-28
29 201817039053-COMPLETE SPECIFICATION [15-10-2018(online)].pdf 2018-10-15
29 201817039053-FORM-26 [10-11-2022(online)].pdf 2022-11-10
30 201817039053-Written submissions and relevant documents [21-11-2022(online)].pdf 2022-11-21
30 201817039053-DECLARATION OF INVENTORSHIP (FORM 5) [15-10-2018(online)].pdf 2018-10-15
31 201817039053-PA [23-11-2022(online)].pdf 2022-11-23
31 201817039053-DRAWINGS [15-10-2018(online)].pdf 2018-10-15
32 201817039053-FORM 1 [15-10-2018(online)].pdf 2018-10-15
32 201817039053-ASSIGNMENT DOCUMENTS [23-11-2022(online)].pdf 2022-11-23
33 201817039053-PRIORITY DOCUMENTS [15-10-2018(online)].pdf 2018-10-15
33 201817039053-8(i)-Substitution-Change Of Applicant - Form 6 [23-11-2022(online)].pdf 2022-11-23
34 201817039053-STATEMENT OF UNDERTAKING (FORM 3) [15-10-2018(online)].pdf 2018-10-15
34 201817039053-Response to office action [29-12-2022(online)].pdf 2022-12-29
35 201817039053-PatentCertificate28-03-2023.pdf 2023-03-28
36 201817039053-IntimationOfGrant28-03-2023.pdf 2023-03-28

Search Strategy

1 2021-02-2417-24-51E_25-02-2021.pdf

ERegister / Renewals

3rd: 24 Apr 2023

From 15/01/2020 - To 15/01/2021

4th: 24 Apr 2023

From 15/01/2021 - To 15/01/2022

5th: 24 Apr 2023

From 15/01/2022 - To 15/01/2023

6th: 24 Apr 2023

From 15/01/2023 - To 15/01/2024

7th: 29 Dec 2023

From 15/01/2024 - To 15/01/2025

8th: 30 Dec 2024

From 15/01/2025 - To 15/01/2026