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"Connected Wall Structure Consisting Of Steel Pipe Sheet Piles And Steel Sheet Pile, And Method Of Constructing Same"

Abstract: Provided are a connected wall structure consisting of steel pipe sheet piles and a steel sheet pile and a method of constructing the same, such that there is formed a connected structure wherein a certain degree of construction errors is made allowable, with the result that there is provided a rational connected structure which is excellent in constructability and allows for the reduction in construction cost. In order that steel pipe sheet piles 1 installed by being driven with a gap therebetween will be connected together by a steel sheet pile 2 for the purpose of forming a connected wall structure, there are provided on the sides of the steel pipe sheet piles 1, connecting members 3 having slits 3a continuously extending in the longitudinal direction. The ends of the steel pile 2 are fitted into the slits 3a from the longitudinal direction. Predetermined play u for absorbing construction errors between the steel pipe sheet piles 1 is provided in the connecting sections. Since spaces sufficient to absorb construction errors are provided in the connecting sections for the steel pipe sheet piles and the steel sheet pile, the ends of the steel sheet pile may be easily fitted and installed even if the steel pipe sheet piles, undergo elongation or shrinkage due to driving.

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
15 May 2012
Publication Number
46/2015
Publication Type
INA
Invention Field
CIVIL
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2019-10-28
Renewal Date

Applicants

NIPPON STEEL & SUMITOMO METAL CORPORATION
6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN

Inventors

1. OTSUSHI, KAZUTAKA
C/O SUMITOMO METAL INDUSTRIES, LTD. 5-33, KITAHAMA 4-CHOME CHUO-KU, OSAKA-SHI OSAKA 541-0041 JAPAN
2. OKAMOTO, MASANOBU
C/O SUMITOMO METAL INDUSTRIES, LTD. 5-33, KITAHAMA 4-CHOME CHUO-KU, OSAKA-SHI OSAKA 541-0041 JAPAN
3. TSUKUDA, KATSUO
C/O SUMITOMO METAL INDUSTRIES, LTD. 5-33, KITAHAMA 4-CHOME CHUO-KU, OSAKA-SHI OSAKA 541-0041 JAPAN

Specification

SPECIFICATION TITLE OF THE INVENTION: CONNECTED WALL STRUCTURE CONSISTING OF STEEL PIPE SHEET PILES AND STEEL SHEET PILE, AND METHOD OF CONSTRUCTING SAME TECHNICAL FIELD [0001] This invention relates to a connected wall structure which consists of steel pipe sheet piles and a steel sheet pile and is useful in applications to sheathing walls such as revetments and retaining walls, and also to a method of constructing the same. BACKGROUND ARTS [0002] Such forces that are caused by earth pressure and/or hydraulic pressure to bend sheathing members work on sheathing walls such as revetments and retaining walls, and as a result, the sheathing walls undergo bending deformation in such a direction that the above forces are at work. Thus, it has been feared that the sheathing walls could lead to sliding and/or falling as the case might be. [0003] In designing the sheathing walls, it has been suggested that because of the need for penetration up to a sufficient depth to ensure that the amount of wall deformation would be limited to —not more than its specified allowance for a structure in order to prevent the above sliding and/or falling, wall members having sufficient section rigidity could be applied, and from the economical point of view, determination of suitable members, cross section and length could be made within the range which meets these requirements. It has been suggested also that because of the need for the greater length of wall member penetration into the ground depending on wall height, ground conditions and seismic coefficient at the time of earthquake, it would be important that the wall 9- members are of quite excellently constructable members. [0004] Generally available sheathing walls include types of (a) self-supported structure, (b) counterforted structure and (c) strutted structure as shown in FIG. 6, each of which being used in its proper way depending on applications thereof. Particularly, the self-supported structure as shown in FIG. 6 (a) has been applied to cases where because of limitations on the rear space for the sheathing wall construction site, there would be not provided any sufficiently ensured space therefor. [0005] For the self-supported structure, hat-shaped steel sheet piles 2 as shown in FIG. 7 have been employed, for instance. Meanwhile, in applications to revetments and/or retaining walls of greater wall height, or incases where the deformation acceptable to the wall is so small that there will be the need for sufficient wall rigidity, use has been frequently made of steel pipe sheet piles 1 excellent in section rigidity, each of which being such that a connecting member 3 adapted to be fitted is mounted on a steel pipe as shown in FIG. 8. [0006] The steel sheet piles and the steel pipe sheet piles are excellent also in the property of being allowed for penetration into the ground, and there are various types of construction methods thereof according to the construction site needs as well. It has been thus realized that these sheet piles are of excellently constructable wall members, considering that a construction method such as vibro-hammer method is adaptable to cases where a demand for urgent constructions is made, or otherwise, a hydraulic press-in method which allows for low-vibration and low-noise constructions is applicable to constructions in urban areas where there are private houses and the like in the neighborhood of the construction site. [0007] Further, as for the prior arts, the non-Patent document 1 (i.e.. Catalogue in Arcelor Mittal Co., Ltd.} describes one technology which is such that a hooked sectional-shaped joint member 33 mounted on a steel pipe sheet pile 1 and a joint 32c of a Z-shaped steel sheet pile {which is such that two pieces of Z-shaped steel sheet piles 32 are connected together into the substantially same form as a steel sheet pile shown in FIG. 7) are fitted together to form a wall structure, as shown in FIG. 9. [0008] Moreover, the Patent document 1 describes, as for breakwaters each constructed using steel pipe sheet piles and a straight-shaped sheet pile, one breakwater which is such that a straight-shaped sheet pile is so interposedbetween steel pipe sheet piles installed with a predetermined gap therebetween as to range from the bottom ends of the above steel pipe sheet piles to a position which is level with or slightly above the sea-bottom ground surface. [0009] In addition to the above, the Patent document 2 describes, as for connected structures of deformed wall-structure constituent members, one arrangement which is such that a cylindrical joint having a slit is mounted to a wall surface in such an intersection position as to interconnect sheet pile walls which are formed such that joints of more than one steel sheet pile are fitted together, thereby allowing the end of the steel sheet pile of the sheet pile wall on the other side to be fitted thereinto. LITERATURES ON THE PRIOR ARTS PATENT DOCUMENTS [0010] Patent document 1: Japanese Laid-open Patent Publication No. Hei 02-213508 Patent document 2: Japanese Patent Publication No. 4231429 NON-PATENT DOCUMENT [0011] Non-Patent document: ''Steel Sheet Piling General Catalogue 2008" Arcelor Mittal, 2008, P.34 SUMMARY OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION [0012] In the wall structure described in the above non-Patent document 1, it has been generally suggested that the steel pipe sheet piles are first ins tailed by being driven with a predetermined gap therebetween, and afterwards, the steel sheet pile is installed by being driven in the form which is such that the steel pipe sheet piles will be connected together by the steel sheet pile. [0013] However, because of narrow spaces each between connecting sections, it has been difficult to perform fitting the connecting sections at the time of construction. Thus, for such worJcs, there has been the need to separately install a template for positioning in order to effect installation by driving and so on under the strict management conditions. For that reason, problems such as the increase in construction cost and much time and/or labor for the works in the construction site have arisen. [0014] Further, it has been feared that elongation or shrin] thereof takes values of 100 mm, 125 mm, 165.2 mm and 200 mm. In this instance of analysis, a model of bi-linear type was applied, provided that yielding stress of a steel material is as equivalent as a = 400N/m^ of generally available steel, and that the connecting member 3 and the steel sheet pile 2 are fitted together over the whole length (or 1 mm as of a unit length in view of calculations) in the longitudinal direction (or the dir ect ion perpendicular to the plane as far as the direction shown in FIG. 10 is concerned). [0057] It is seen from FIG. 11 that the gradient of a straight line is subject to change at points of not more and not less than 125 mm in outer diameter O. This gives that the above deformation or behavior at the time when the load P is reached varies depending on whether the outer diameter is not more or not less than 125 mm, more specifically, the steel sheet pile 2 undergoes yielding mainly when 0<125 mm, while the connecting member 3 undergoes deformation mainly when *l>>125 mm. [0058] The relation between the outer diameter of the connecting member 3 and the sheet thickness t thereof in a changing point of gradient as shown in FIG, 11 will be next obtained. Suppose here that as for the structure of the connecting section, there is given a model, for simplification, in the form of a cantilever beam (of length L, depth-directional length b and sheet thickness t) having one end on which a load P is applied, as shown in FIG. 12 . It is noted that the length L represents, to be exact, a length ranging from a portion where the connecting member 3 and the steel pipe body of the steel pipe sheet pile 1 are fixed together to a portion where the load will work on the slit 3a of the connecting member 3, in which case, examination was made, provided that the length L is equal with the outer diameter of the connecting member 3, for simplification. [0059] In this type of model, bending moment M which will be created at the fixed end of the beam, cross section rigidity I of the beam and stress o which will be created in the beam are respectively expressed by the following expressions (a) to (c). [Expression 3] M = P • L ... (a) [Expression 4] , b- t^ ... (b) [Expression 5] M P-L 1 , 6-P-L ^2 ... (c) where b represents a depth-directional length, t represents a sheet thickness of the beam (or the connecting member 3) and y represents a distance (= t/2} from the neutral axis to the beam end [0060] Suppose here that a working load which causes the sheet pile to lead to yielding is Py, the working load on the beam on one side will be Py/2 . It may be thus considered that the above changing point of gradient is the requirement under which the beam {or the connecting member) and the sheet pile undergo deformation/yielding at the same time, more specifically/ the requirement under which the beam stress reaches the yielding stress a y at the time when the load Py/2 was at work on the beam. Thus, suppose that the expression (c) is transformed by substitution of these values, this gives: [Expression 6] ^ ..■ (d) [0061] Further, with the beam length L replaced by the outer diameter ^ of the connecting member 3 as far as the expression (d) derived from the above cantilever beam model is concerned (that is, the "2o X following expression (2)'}, validity on the application of this expression to the structure shown in FIG. 1 will now be verified. [Expression 7] ^ ^' ... (2}' where 0 represents the outer diameter of the connecting member 3, t represents the sheet thickness of the connecting member 3, (7 y represents the yielding stress of the steel material used for the connecting member 3, Py represents working load which causes the steel sheet pile 2 to lead to yielding, and b represents the longitudinal length of which the connecting member 3 and the steel sheet pile 2 are fitted together. [0062] It is seen from FIG. 11 that the working load Py at the changing point of gradient is Py = 0.125 (kN/mm) . Further, suppose that the depth-directional length b is 1(mm), and the yielding stress ay of the steel material used for the connecting member is 4 00 (N/mm^) which is given on the assumption that the usually available steel material is in use as described the above, substituting these values into the expression (2) ' gives the following relation (2)". [Expression 8] J** IzD (2)" Substitution of t = 11 (mm) into the expression (2)" gives $ ^ 129. 5 (mm), which agrees well with

= 200 mm, while the sheet thickness thereof takes values of 11 ram, 14 mm, and 16 mm. The results of the above FEM analysis are shown in FIG. 14. It is seen from FIG. 14 that the gradient of a straight line is subject to change at points of not more and not less than 14 ram in sheet thickness. Meanwhile, it is seen from the expression {!)" that the sheet thickness t at the time of substitution of 0 = 200 ram is t ^ 13.7 mm, which also agrees well with the changing point of gradient obtained from the FEM analysis. [0064] It may be considered that the actual steel pipe sheet pile 1 is subject to a certain degree of variations in diameter and/or slit width or others such as welding at the time of machining and/or installation of the connecting member 3. It is thus preferable that there is provided a structure which is such that the sheet thickness t of the connecting member 3 is equal to or larger than the sheet thickness at the changing point of gradient, that is, a structure which meets the expression (2). [Expression 9] ■^ ^y ... (2) [0065] It is noted that the steel sheet pile member does not need to have the same length as the steel pipe sheet pile 1, and thus may be smaller in length than the steel pipe sheet pile 1, in other words, may be of length which is not less than the wall height in order to play a wall role in prevention of outward landslides of earth and sand in the rear. [0066] Further, in cases where the cut-off function is desired for the wall structure, some cut-off treatments have been generally taken in such a manner that the connecting sections are charged with a cut-off material. In this case, for the narrow spaces of the connecting sections, it is feared that the connecting sections -22- are hard to be sufficiently charged with the cut-off material because of the difficulty of charging of the cut-off material therein, resulting in no satisfactory fulfillment of the cut-off function. [0067] For that reason, there is provided the connected wall structure which is such that spaces sufficient to be charged with the cut-off material are provided in the connecting sections for the steel pipe sheet piles 1 and the steel sheet pile 2, and consequently, it may be expected that a sufficient cut-off function will be attained, together with the reduced construction cost and less time and/or labor in relation to the cut-off treatments. [0068] As for the cut-off treatments, there is one instance where after installation of the wall, the connecting section is excavated using a construction method such as water jetting in order to charge the inside thereof with mortar and/or cut-off material. Accordingly, it is thus preferable that the spaces in the connecting sections for the steel pipe sheet piles and the steel sheet pile will be sized to such an extent that excavation by means of water jetting is executable. [0069] The connecting members 3 of the steel pipe sheet piles 1 include, as one instance thereof, connecting members of steel pipe type, each of which being such that a usually available steel pipe having a diameter of 165. 2 mm has an about 30-mm-long slit 3a as shown in FIG. 2 (a) . Thus, application of such type of connecting members will allow a filling material for cut-off to be fully charged even after connection with the steel sheet pile 2 is made. [0070] The sufficiently-sized spaces are provided in the connecting sections for the steel pipe sheet piles 1 and the steel sheet pile 1, and consequently, the property of installation by driving is increased, together with workability for the cut-off treatments. In this case, however, it is feared that too large spaces, if provided, will cause the connecting sections to be disengaged at the time of installation by driving, [0071] In this connection, as shown in FIGS. 4 (a) to 4{c), there is provided a stopper member 4 in a joint section 2c (or a hooked section) of the steel sheet pile 2, and consequently, it is possible to prevent disengagement from the connecting sections for the steel pipe sheet piles 1. [0072] The stopper member 4 in this case is not particularly limited, and thus may be round steels, deformed steel bars, flat steels and the like, or otherwise, members other than the above are also available. Further, the stopper member 4 does not need to be arranged longitudinally over the whole length of the steel sheet pile 2, and thus maybe in dispersed arrangement in order to suppress the machining cost and/or the amount of strain occurring in the steel sheet pile 2 at the time of installation of members. [0073] FIG. 5(a) shows one instance where the hat-shaped steel sheet pile 2 is connected to the steel pipe sheet piles in such a manner as to be eccentric therefrom, in which case, the steel sheet pile 2 is so positioned as to be eccentric from the center axis of the steel pipe sheet piles 1 in order to make alignment of the surfaces asof the wall, and consequently, theremaybe provided the increased constructability in cases where facing panels are installed on the front surface of the wall. [0074] Likewise, in FIG, 5(b), there is shown one instance where 2^ the straight-shaped steel sheet pile 12 is connected to the steel pipe sheet piles 1 in such a manner as to be eccentric therefrom. REPRESENTATIONS OF REFERENCE NUMERALS [0075] 1 ... Steel pipe sheet pile 2 ...Steel sheet pile (Hat-shapedsteel sheet pile) , 2a...Flat section, 2b, 2c ... Joint section, 3 ... Connecting member, 3a ... Slit 4 ... Stopper member 12 ... Straight-shaped steel sheet pile, 12b ... Joint section 22 ... U-shaped steel sheet pile, 22b ... Joint section 32 ... Z-shaped steel sheet pile, 32b, 32c ... Joint section, 33 ... Joint member 43 ... Angle, 43a ... Slit u ... Play We claim: 1. In a connected wall structure which consists of steel pipe sheet piles and a steel sheet pile and is formed such that the steel pipe sheet piles installed by being driven with a gap therebetween are connected together by the steel sheet pile, a connected wall structure consisting of steel pipe sheet piles and a steel sheet pile, characterized in that there are provided, on the sides of said steel pipe sheet piles, connecting members having slits continuously extending in the longitudinal direction, the ends of said steel sheet pile are so fitted into said slits from the longitudinal direction that said connecting members and the steel sheet pile ends are connected together, and play for absorbing construction errors between said steel pipe sheet piles is provided in the connecting sections for said connecting members and the / steel sheet pile ends. ' 2. The connected wall structure consisting of the steel pipe sheet piles and the steel sheet pile according to claim 1, wherein said connecting members are charged with a cut-off material. 3. The connected wall structure consisting of the steel pipe sheet piles and the steel sheet pile according to claim 1 or 2, wherein said steel sheet pile has at the end thereof a stopper member for preventing the steel sheet pile end from slipping out of said slit. 4. The connected wall structure consisting of the steel pipe sheet piles and the steel sheet pile according to claim 1, 2 or 3, wherein said connecting members are in an approximately circular form, and the relationbetweenan outer diameter $ of the connecting member and a sheet thickness t thereof meets the relation given 2£ by the following expression (1). [Expression 1] 70 + 2t ^ £ 270 ... (1) 5. The connected wall structure consisting of the steel pipe sheet piles and the steel sheet pile according to claim 4, wherein the requirements for the outer diameter (mm) and the sheet thickness t (mm) of said connecting member and besides, for the expression (2) are met [Expression 2] av- b , J ^ ... (2) where $ represents the outer diameter of the connecting member, t represents the sheet thickness of the connecting member, ay represents yielding stress of a steel material used for the connecting member, Py represents working load which causes the steel sheet pile to lead to yielding, andb represents a longitudinal length of which the connecting member and the steel sheet pile are fitted. 6. The connected wall structure consisting of the steel pipe sheet piles and the steel sheet pile according to any one of claims 1 to 5, wherein said steel sheet piles include steel sheet piles each having flat sections at the opposite ends in the cross section orthogonal to the axial direction. 7. The connected wall structure consisting of the steel pipe sheet piles and the steel sheet pile according to any one of claims 1 to 6, wherein said steel sheet piles include U-shaped steel sheet piles. 8. The connected wall structure consisting of the steel pipe 27 sheet piles and the steel sheet pile according to any one of claims 1 to 7, wherein the connecting positions of said steel sheet pile are made eccentric from the neutral axis of said steel pipe sheet piles. 9. A method of constructing the connected wall structure consisting of the steel pipe sheet piles and the steel sheet pile according to any one of claims 1 to 8, said method comprising the steps of first installing said steel pipe sheet piles by being driven with a predetermined gap therebetween, and then installing said steel sheet pile by being driven in the form which is such that said steel pipe sheet piles will be connected together by said steel sheet pile later. Dated this 15th day of May, 2012. Sumitomo Metal Industries, Ltd. (Nitin MaSilamani) of Amarchand & Mangaldas & SureshA. Shroff & Co. Attorneys for the Applicant

Documents

Application Documents

# Name Date
1 4254-DELNP-2012-GPA-(15-06-2012).pdf 2012-06-15
1 4254-DELNP-2012-RELEVANT DOCUMENTS [27-07-2021(online)].pdf 2021-07-27
2 4254-delnp-2012-Form-18-(15-06-2012).pdf 2012-06-15
2 4254-DELNP-2012-RELEVANT DOCUMENTS [20-02-2020(online)].pdf 2020-02-20
3 4254-DELNP-2012-IntimationOfGrant28-10-2019.pdf 2019-10-28
3 4254-delnp-2012-Form-13-(15-06-2012).pdf 2012-06-15
4 4254-DELNP-2012-PatentCertificate28-10-2019.pdf 2019-10-28
4 4254-delnp-2012-Correspondence Others-(15-06-2012).pdf 2012-06-15
5 4254-DELNP-2012-Correspondence-020719.pdf 2019-07-09
5 4254-DELNP-2012-Correspondence Others-(15-06-2012)..pdf 2012-06-15
6 4254-DELNP-2012-OTHERS-020719.pdf 2019-07-09
6 4254-DELNP-2012-Claims-(15-06-2012).pdf 2012-06-15
7 4254-delnp-2012-Correspondence-Others-(25-06-2012).pdf 2012-06-25
7 4254-DELNP-2012-AMENDED DOCUMENTS [28-06-2019(online)].pdf 2019-06-28
8 4254-delnp-2012-Form 3-(06-11-2012).pdf 2012-11-06
8 4254-DELNP-2012-FORM 13 [28-06-2019(online)].pdf 2019-06-28
9 4254-delnp-2012-Correspondence-Others-(06-11-2012).pdf 2012-11-06
9 4254-DELNP-2012-RELEVANT DOCUMENTS [28-06-2019(online)].pdf 2019-06-28
10 4254-DELNP-2012-Correspondence-310718.pdf 2018-08-02
10 Abstract.jpg 2013-05-28
11 4254-delnp-2012-Form-5.pdf 2013-05-28
11 4254-DELNP-2012-Power of Attorney-310718.pdf 2018-08-02
12 4254-DELNP-2012-AMENDED DOCUMENTS [23-07-2018(online)].pdf 2018-07-23
12 4254-delnp-2012-Form-3.pdf 2013-05-28
13 4254-DELNP-2012-Changing Name-Nationality-Address For Service [23-07-2018(online)].pdf 2018-07-23
13 4254-delnp-2012-Form-2.pdf 2013-05-28
14 4254-DELNP-2012-CLAIMS [23-07-2018(online)].pdf 2018-07-23
14 4254-delnp-2012-Form-1.pdf 2013-05-28
15 4254-DELNP-2012-COMPLETE SPECIFICATION [23-07-2018(online)].pdf 2018-07-23
15 4254-delnp-2012-Drawings.pdf 2013-05-28
16 4254-delnp-2012-Description (Complete).pdf 2013-05-28
16 4254-DELNP-2012-DRAWING [23-07-2018(online)].pdf 2018-07-23
17 4254-DELNP-2012-FER_SER_REPLY [23-07-2018(online)].pdf 2018-07-23
17 4254-delnp-2012-Correspondence-Others.pdf 2013-05-28
18 4254-delnp-2012-Claims.pdf 2013-05-28
18 4254-DELNP-2012-FORM 3 [23-07-2018(online)].pdf 2018-07-23
19 4254-delnp-2012-GPA-(31-07-2013).pdf 2013-07-31
19 4254-DELNP-2012-PETITION UNDER RULE 137 [23-07-2018(online)].pdf 2018-07-23
20 4254-delnp-2012-Form-2-(31-07-2013).pdf 2013-07-31
20 4254-DELNP-2012-RELEVANT DOCUMENTS [23-07-2018(online)].pdf 2018-07-23
21 4254-DELNP-2012-FORM 4(ii) [17-04-2018(online)].pdf 2018-04-17
21 4254-delnp-2012-Form-1-(31-07-2013).pdf 2013-07-31
22 4254-delnp-2012-Correspondence Others-(31-07-2013).pdf 2013-07-31
22 4254-DELNP-2012-FER.pdf 2017-10-23
23 4232-delnp-2012-Form-3-(26-06-2014).pdf 2014-06-26
23 Petition under Rule 137.pdf 2014-08-08
24 4254-delnp-2012-Correspondence-Others-(07-08-2014).pdf 2014-08-07
24 4232-delnp-2012-Correspondence-Others-(26-06-2014).pdf 2014-06-26
25 4254-delnp-2012-Form-1-(07-08-2014).pdf 2014-08-07
26 4232-delnp-2012-Correspondence-Others-(26-06-2014).pdf 2014-06-26
26 4254-delnp-2012-Correspondence-Others-(07-08-2014).pdf 2014-08-07
27 4232-delnp-2012-Form-3-(26-06-2014).pdf 2014-06-26
27 Petition under Rule 137.pdf 2014-08-08
28 4254-delnp-2012-Correspondence Others-(31-07-2013).pdf 2013-07-31
28 4254-DELNP-2012-FER.pdf 2017-10-23
29 4254-DELNP-2012-FORM 4(ii) [17-04-2018(online)].pdf 2018-04-17
29 4254-delnp-2012-Form-1-(31-07-2013).pdf 2013-07-31
30 4254-delnp-2012-Form-2-(31-07-2013).pdf 2013-07-31
30 4254-DELNP-2012-RELEVANT DOCUMENTS [23-07-2018(online)].pdf 2018-07-23
31 4254-delnp-2012-GPA-(31-07-2013).pdf 2013-07-31
31 4254-DELNP-2012-PETITION UNDER RULE 137 [23-07-2018(online)].pdf 2018-07-23
32 4254-delnp-2012-Claims.pdf 2013-05-28
32 4254-DELNP-2012-FORM 3 [23-07-2018(online)].pdf 2018-07-23
33 4254-delnp-2012-Correspondence-Others.pdf 2013-05-28
33 4254-DELNP-2012-FER_SER_REPLY [23-07-2018(online)].pdf 2018-07-23
34 4254-delnp-2012-Description (Complete).pdf 2013-05-28
34 4254-DELNP-2012-DRAWING [23-07-2018(online)].pdf 2018-07-23
35 4254-delnp-2012-Drawings.pdf 2013-05-28
35 4254-DELNP-2012-COMPLETE SPECIFICATION [23-07-2018(online)].pdf 2018-07-23
36 4254-delnp-2012-Form-1.pdf 2013-05-28
36 4254-DELNP-2012-CLAIMS [23-07-2018(online)].pdf 2018-07-23
37 4254-DELNP-2012-Changing Name-Nationality-Address For Service [23-07-2018(online)].pdf 2018-07-23
37 4254-delnp-2012-Form-2.pdf 2013-05-28
38 4254-DELNP-2012-AMENDED DOCUMENTS [23-07-2018(online)].pdf 2018-07-23
38 4254-delnp-2012-Form-3.pdf 2013-05-28
39 4254-delnp-2012-Form-5.pdf 2013-05-28
39 4254-DELNP-2012-Power of Attorney-310718.pdf 2018-08-02
40 4254-DELNP-2012-Correspondence-310718.pdf 2018-08-02
40 Abstract.jpg 2013-05-28
41 4254-delnp-2012-Correspondence-Others-(06-11-2012).pdf 2012-11-06
41 4254-DELNP-2012-RELEVANT DOCUMENTS [28-06-2019(online)].pdf 2019-06-28
42 4254-DELNP-2012-FORM 13 [28-06-2019(online)].pdf 2019-06-28
42 4254-delnp-2012-Form 3-(06-11-2012).pdf 2012-11-06
43 4254-DELNP-2012-AMENDED DOCUMENTS [28-06-2019(online)].pdf 2019-06-28
43 4254-delnp-2012-Correspondence-Others-(25-06-2012).pdf 2012-06-25
44 4254-DELNP-2012-Claims-(15-06-2012).pdf 2012-06-15
44 4254-DELNP-2012-OTHERS-020719.pdf 2019-07-09
45 4254-DELNP-2012-Correspondence Others-(15-06-2012)..pdf 2012-06-15
45 4254-DELNP-2012-Correspondence-020719.pdf 2019-07-09
46 4254-DELNP-2012-PatentCertificate28-10-2019.pdf 2019-10-28
46 4254-delnp-2012-Correspondence Others-(15-06-2012).pdf 2012-06-15
47 4254-DELNP-2012-IntimationOfGrant28-10-2019.pdf 2019-10-28
47 4254-delnp-2012-Form-13-(15-06-2012).pdf 2012-06-15
48 4254-DELNP-2012-RELEVANT DOCUMENTS [20-02-2020(online)].pdf 2020-02-20
48 4254-delnp-2012-Form-18-(15-06-2012).pdf 2012-06-15
49 4254-DELNP-2012-RELEVANT DOCUMENTS [27-07-2021(online)].pdf 2021-07-27
49 4254-DELNP-2012-GPA-(15-06-2012).pdf 2012-06-15

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