Patents by Inventor Yoshiyuki Ozaki
Yoshiyuki Ozaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20200350545Abstract: The present invention provides an optimal non-aqueous electrolyte secondary battery having high durability against high rate charging and discharging and excellent safety. The non-aqueous electrolyte secondary battery 100 according to the present invention comprises a positive electrode 10, a negative electrode 20 and a separator 30 which is interposed between the positive electrode 10 and the negative electrode 20. The separator 30 has a two-layer structure which is composed of a porous polyethylene layer 34 mainly composed of polyethylene, and a porous polymer layer 32 mainly composed of a polymer having higher oxidation resistance than that of the polyethylene, and an inorganic filler layer 40 including an inorganic filler and a binder is formed on the surface of the polyethylene layer 34 on which the porous polymer layer 32 is not formed.Type: ApplicationFiled: July 22, 2020Publication date: November 5, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomoyoshi UEKI, Naoyuki WADA, Yoshiyuki OZAKI
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Patent number: 10777799Abstract: The present invention provides an optimal non-aqueous electrolyte secondary battery having high durability against high rate charging and discharging and excellent safety. The non-aqueous electrolyte secondary battery 100 according to the present invention comprises a positive electrode 10, a negative electrode 20 and a separator 30 which is interposed between the positive electrode 10 and the negative electrode 20. The separator 30 has a two-layer structure which is composed of a porous polyethylene layer 34 mainly composed of polyethylene, and a porous polymer layer 32 mainly composed of a polymer having higher oxidation resistance than that of the polyethylene, and an inorganic filler layer 40 including an inorganic filler and a binder is formed on the surface of the polyethylene layer 34 on which the porous polymer layer 32 is not formed.Type: GrantFiled: November 26, 2010Date of Patent: September 15, 2020Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tomoyoshi Ueki, Naoyuki Wada, Yoshiyuki Ozaki
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Patent number: 9911972Abstract: The non-aqueous electrolyte secondary battery 10 provided by the present invention comprises a positive electrode 30, a negative electrode 50 and a non-aqueous electrolyte. The negative electrode 50 includes a negative electrode current collector 52 and a negative electrode active material layer 54 formed on the current collector 52, the negative electrode active material layer 54 containing a negative electrode active material 55 capable of storing and releasing charge carriers and having shape anisotropy so that the charge carriers are stored and released along a predefined direction. The negative electrode active material layer 54 includes, at a bottom thereof contacting the current collector 52, a minute conductive material 57 with granular shape and/or minute conductive material 57 with fibrous shape having an average particle diameter that is smaller than that of the negative electrode active material 55, and includes, at the bottom thereof; a part of the negative electrode active material 55.Type: GrantFiled: December 14, 2011Date of Patent: March 6, 2018Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koji Takahata, Tatsuya Hashimoto, Yoshiyuki Ozaki, Yukihiro Okada, Kenji Tsuchiya, Masanori Kitayoshi, Naoyuki Wada
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Patent number: 9559350Abstract: The present invention provides a method for producing a nonaqueous electrolyte secondary battery in which the drop in capacity retention rate is controlled by forming a coating in a more favorable state on the surface of the negative electrode active material.Type: GrantFiled: November 24, 2011Date of Patent: January 31, 2017Assignee: Toyota Jidosha Kabushiki KaishaInventors: Toshihiko Mitsuhashi, Yoshiyuki Ozaki, Hideki Sano, Hajime Konishi
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Publication number: 20150030931Abstract: The non-aqueous electrolyte secondary battery 10 provided by the present invention comprises a positive electrode 30, a negative electrode 50 and a non-aqueous electrolyte. The negative electrode 50 includes a negative electrode current collector 52 and a negative electrode active material layer 54 formed on the current collector 52, the negative electrode active material layer 54 containing a negative electrode active material 55 capable of storing and releasing charge carriers and having shape anisotropy so that the charge carriers are stored and released along a predefined direction. The negative electrode active material layer 54 includes, at a bottom thereof contacting the current collector 52, a minute conductive material 57 with granular shape and/or minute conductive material 57 with fibrous shape having an average particle diameter that is smaller than that of the negative electrode active material 55, and includes, at the bottom thereof; a part of the negative electrode active material 55.Type: ApplicationFiled: December 14, 2011Publication date: January 29, 2015Inventors: Koji Takahata, Tatsuya Hashimoto, Yoshiyuki Ozaki, Yukihiro Okada, Kenji Tsuchiya, Masanori Kitayoshi, Naoyuki Wada
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Publication number: 20140322579Abstract: The present invention provides a method for producing a nonaqueous electrolyte secondary battery in which the drop in capacity retention rate is controlled by forming a coating in a more favorable state on the surface of the negative electrode active material.Type: ApplicationFiled: November 24, 2011Publication date: October 30, 2014Inventors: Toshihiko Mitsuhashi, Yoshiyuki Ozaki, Hideki Sano, Hajime Konishi
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Publication number: 20130252056Abstract: The present invention provides an optimal non-aqueous electrolyte secondary battery having high durability against high rate charging and discharging and excellent safety. The non-aqueous electrolyte secondary battery 100 according to the present invention comprises a positive electrode 10, a negative electrode 20 and a separator 30 which is interposed between the positive electrode 10 and the negative electrode 20. The separator 30 has a two-layer structure which is composed of a porous polyethylene layer 34 mainly composed of polyethylene, and a porous polymer layer 32 mainly composed of a polymer having higher oxidation resistance than that of the polyethylene, and an inorganic filler layer 40 including an inorganic filler and a binder is formed on the surface of the polyethylene layer 34 on which the porous polymer layer 32 is not formed.Type: ApplicationFiled: November 26, 2010Publication date: September 26, 2013Inventors: Tomoyoshi Ueki, Naoyuki Wada, Yoshiyuki Ozaki
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Patent number: 8399131Abstract: Disclosed is a composite negative electrode active material including a graphitizable carbon material containing a layered structure formed of stacked carbon layers partially having a three-dimensional regularity, and a low crystalline carbon material. A negative electrode including the composite negative electrode active material is used to produce a non-aqueous electrolyte secondary battery. The non-aqueous electrolyte secondary battery thus produced has a high energy density and demonstrates a high output/input performance for a long period of time in various environments of high to low temperatures.Type: GrantFiled: June 2, 2008Date of Patent: March 19, 2013Assignee: Panasonic CorporationInventors: Yoshiyuki Ozaki, Hiroyuki Fujimoto
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Patent number: 8252462Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and an insulating layer formed on a surface of the positive electrode. The positive electrode includes a lithium nickel composite oxide having a layer structure, and the lithium nickel composite oxide is represented by the general formula: LixNiyM1-yO2 where M is at least one selected from the group consisting of Na, Mg, Sc, Y, Mn, Fe, Co, Cu, Zn, Al, Cr, Pb, Sb, and B, 0<x?1.2, and 0.5<y?1.0. The non-aqueous electrolyte includes a solute and a non-aqueous solvent dissolving the solute, and the non-aqueous solvent contains 40% by weight or more of a cyclic carbonic acid ester. The insulating layer includes an insulating polymeric material.Type: GrantFiled: May 4, 2009Date of Patent: August 28, 2012Assignee: Panasonic CorporationInventors: Naoyuki Wada, Yoshiyuki Ozaki, Shinji Kasamatsu, Yukihiro Okada
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Publication number: 20110200888Abstract: An object is to provide a high capacity non-aqueous electrolyte secondary battery in which decomposition of propylene carbonate is suppressed. The non-aqueous electrolyte secondary battery includes: a negative electrode including graphite particles as a negative electrode active material; a positive electrode; a separator; and a non-aqueous electrolyte including propylene carbonate as a non-aqueous solvent. Each of the graphite particles has a surface portion including an amorphous region and a crystal region which includes a plurality of carbon hexagonal net planes stacked along a surface of the graphite particle. Ends of the stacked carbon hexagonal net planes form loops exposed on the surface of the graphite particle. At least a part of the loops are stacked, and the average number of the loops stacked is more than 1 and not more than 2.Type: ApplicationFiled: August 3, 2010Publication date: August 18, 2011Inventors: Yoshiyuki Ozaki, Shinji Kasamatsu, Hideharu Sato, Shunsuke Yamada
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Publication number: 20100178563Abstract: Disclosed is a composite negative electrode active material including a graphitizable carbon material containing a layered structure formed of stacked carbon layers partially having a three-dimensional regularity, and a low crystalline carbon material. A negative electrode including the composite negative electrode active material is used to produce a non-aqueous electrolyte secondary battery. The non-aqueous electrolyte secondary battery thus produced has a high energy density and demonstrates a high output/input performance for a long period of time in various environments of high to low temperatures.Type: ApplicationFiled: June 2, 2008Publication date: July 15, 2010Applicants: PANASONIC CORPORATION, OSAKA GAS CO., LTD.Inventors: Yoshiyuki Ozaki, Hiroyuki Fujimoto
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Patent number: 7706636Abstract: A part object which forms a model object is disposed by receiving a disposition direction for the part object and updating slot state data indicating a disposition state of the part object in a part slot provided corresponding to each part object. When another part object has been disposed in the part slot corresponding to the part object for which the disposition direction has been issued, whether or not to update the slot state data of the part slot is determined based on priority information which determines disposition priority of each part object, and the slot state data is updated based on the determination result.Type: GrantFiled: March 22, 2006Date of Patent: April 27, 2010Assignee: Namco Bandai Games Inc.Inventors: Taichi Higashino, Seidou Ozawa, Takashi Kumakura, Ryo Takahashi, Sei Nakatani, Yoshiyuki Ozaki
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Patent number: 7669741Abstract: A method of manufacturing a pleated product capable of partially pleating a fabric so that boundaries between pleat portions and non-pleat portions can be conspicuous and a fabric for the pleated product used for the method. In this method, a part of the fabric for the pleated product in which one of warp and weft is formed of easy-to-pleat yarn and the other formed of hard-to-pleat yarn is folded along a folding line tilted relative to the warp and the weft, the fabric is pleated up to the folding line in the passing direction of the warp or the weft, and the fabric is unfolded and washed. Effective pleats are formed only in the passing direction of the easy-to-pleat yarn on a plane on one side of the folded portion and not formed in the passing direction of the hard-to-pleat yarn on a plane on the other side of the folded portion.Type: GrantFiled: April 7, 2004Date of Patent: March 2, 2010Assignee: Ozaki Pleats Co., Ltd.Inventor: Yoshiyuki Ozaki
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Patent number: 7666551Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery of this invention includes: a lithium nickel composite oxide containing lithium, nickel, and at least one metal element other than lithium and nickel; and a layer containing lithium carbonate, aluminum hydroxide, and aluminum oxide, the layer being carried on the surface of the lithium nickel composite oxide. The lithium nickel composite oxide is composed such that the ratio of the nickel to the total of the nickel and the at least one metal element is 30 mol % or more. The layer is composed such that the amount of the lithium carbonate is 0.5 to 5 mol per 100 mol of the lithium nickel composite oxide. The total of aluminum atoms contained in the aluminum hydroxide and the aluminum oxide is 0.5 to 5 mol per 100 mol of the lithium nickel composite oxide.Type: GrantFiled: April 4, 2005Date of Patent: February 23, 2010Assignee: Panasonic CorporationInventors: Yasutaka Kogetsu, Takaya Saito, Yoshiyuki Ozaki
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Publication number: 20090286164Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and an insulating layer formed on a surface of the positive electrode. The positive electrode includes a lithium nickel composite oxide having a layer structure, and the lithium nickel composite oxide is represented by the general formula: LixNiyM1?yO2 where M is at least one selected from the group consisting of Na, Mg, Sc, Y, Mn, Fe, Co, Cu, Zn, Al, Cr, Pb, Sb, and B, 0<x?1.2, and 0.5<y?1.0. The non-aqueous electrolyte includes a solute and a non-aqueous solvent dissolving the solute, and the non-aqueous solvent contains 40% by weight or more of a cyclic carbonic acid ester. The insulating layer includes an insulating polymeric material.Type: ApplicationFiled: May 4, 2009Publication date: November 19, 2009Inventors: Naoyuki WADA, Yoshiyuki OZAKI, Shinji KASAMATSU, Yukihiro OKADA
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Publication number: 20090098448Abstract: The present invention can provide a composite negative electrode active material including a fused matter of a graphite material and a graphitizable carbon material undergoing graphitization. Such a composite negative electrode active material is prepared by heating a mixture of a graphite material and a graphitizable carbon material undergoing graphitization at 700° C. to 1300° C., and crushing the obtained fused matter. The use of the composite negative electrode active material makes it possible to provide a non-aqueous electrolyte secondary battery being excellent in output-input characteristics and having a high energy density and a long life.Type: ApplicationFiled: October 16, 2007Publication date: April 16, 2009Inventors: Yoshiyuki Ozaki, Hiroyuki Fujimoto
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Patent number: 7442470Abstract: In a high power output non-aqueous electrolyte secondary battery including a negative electrode including a graphitizable carbon material, the physical properties of the graphitizable carbon material is controlled. In a X-ray diffraction pattern of the graphitizable carbon material, a ratio of a peak intensity I(101) attributed to a (101) plane to a peak intensity I(100) attributed to a (100) plane satisfies 0<I(101)/I(100)<1.0. A ratio of a peak intensity I(110) attributed to a (110) plane to a peak intensity I(004) attributed to a (004) plane satisfies 0.7?I(110)/I(004) ?1.4. The graphitizable carbon material preferably has a specific surface area measured by BET method of 1 to 5 m2/g.Type: GrantFiled: October 5, 2005Date of Patent: October 28, 2008Assignees: Matsushita Electric Industrial Co., Ltd., Osaka Gas Chemicals Co., Ltd.Inventors: Yoshiyuki Ozaki, Kazuhiro Ota, Hiroyuki Fujimoto, Koichi Morita
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Patent number: 7410511Abstract: A positive electrode active material, which gives a non-aqueous electrolyte secondary battery capable of high input/output where resistance due to a battery reaction in a low temperature environment is suppressed, is produced by a method comprising: (a)providing a nickel hydroxide which is represented by the general formula Ni1?(x+y)CoxMy(OH)2, (b)heating the nickel hydroxide at a temperature not lower than 600° C. and not higher than 1000° C. to produce a nickel oxide which is represented by the general formula Ni1?(x+y)CoxMyO; and (c)mixing the nickel oxide and a lithium compound to obtain a mixture and heating the mixture at a temperature not lower than 700° C. and not higher than 850° C. to produce a lithium-containing composite oxide which is represented by the general formula LiNi1?(x+y)CoxMyO2, where 0.1?x?0.35 and 0.03?y?0.2 are satisfied and M is at least one selected from the group consisting of Al, Ti and Sn.Type: GrantFiled: August 8, 2003Date of Patent: August 12, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshiyuki Ozaki, Yasutaka Kogetsu, Takaya Saito, Hidekazu Hiratsuka
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Patent number: 7374842Abstract: A non-aqueous electrolyte secondary battery, comprises positive and negative electrode plates, each comprising a current collector and a material mixture layer carried on each face thereof. A total thickness of the positive electrode material mixture layers on both faces of the current collector is 40 ?m to 100 ?m. The positive electrode plate has an electrode area of 520 cm2 to 800 cm2 per battery capacity of 1 Ah. The negative electrode material mixture layer comprises a graphitizable carbon material. A wide-range X-ray diffraction pattern of the graphitizable carbon material has a peak PX (101) attributed to a (101) crystal face at about 2?=44 degrees, and a peak PX (100) attributed to a (100) crystal face at about 2?=42 degrees. A ratio of an intensity IX (101) of PX (101) to an intensity IX (100) of PX(100) satisfies: 0<IX (101)/IX (100)<1.Type: GrantFiled: April 28, 2004Date of Patent: May 20, 2008Assignee: Matsushita Battery Industrial Co., Ltd.Inventors: Yoshiyuki Ozaki, Kazuhiro Ota, Junichi Yamaura, Takabumi Fujii
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Publication number: 20060217008Abstract: A part object which forms a model object is disposed by receiving a disposition direction for the part object and updating slot state data indicating a disposition state of the part object in a part slot provided corresponding to each pant object. When another part object has been disposed in the part slot corresponding to the part object for which the disposition direction has been issued, whether or not to update the slot state data of the pant slot is determined based on priority information which determines disposition priority of each part object, and the slot state data is updated based on the determination result.Type: ApplicationFiled: March 22, 2006Publication date: September 28, 2006Applicant: NAMCO BANDAI GAMES INC.Inventors: Taichi Higashino, Seidou Ozawa, Takashi Kumakura, Ryo Takahashi, Sei Nakatani, Yoshiyuki Ozaki