Patents by Inventor Hideki Nishihama
Hideki Nishihama 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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Patent number: 7384708Abstract: A non-aqueous electrolyte battery of the present invention includes a non-aqueous electrolyte containing a lithium salt, a cyclic sultone derivative, and an acid anhydride, wherein the non-aqueous electrolyte contains the cyclic sultone derivative in an amount of 0.3 to 3% by mass and the non-aqueous electrolyte contains the acid anhydride in an amount of 0.3 to 3% by mass. Furthermore, the non-aqueous electrolyte battery includes at least one selected from a cyclic sultone derivative and an acid anhydride, and an electrolyte salt. The electrolyte salt contains lithium salt A and lithium salt B. The lithium salt A is at least one selected from LiBF4, LiPF6, LiAsF6, and LiSbF6, and the lithium salt B is a lithium salt other than the lithium salt A. The electrolyte contains the lithium salt A in an amount of 2 mol % or more.Type: GrantFiled: January 13, 2006Date of Patent: June 10, 2008Assignee: Hitachi Maxell, Ltd.Inventors: Tetsuo Kawai, Atsushi Yamano, Noriyuki Yabushita, Tadashi Sakata, Hideki Nishihama
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Patent number: 7297447Abstract: A non-aqueous electrolyte battery of the present invention includes a non-aqueous electrolyte containing a lithium salt, a cyclic sultone derivative, and an acid anhydride, wherein the non-aqueous electrolyte contains the cyclic sultone derivative in an amount of 0.3 to 3% by mass and the non-aqueous electrolyte contains the acid anhydride in an amount of 0.3 to 3% by mass. Furthermore, the non-aqueous electrolyte battery includes at least one selected from a cyclic sultone derivative and an acid anhydride, and an electrolyte salt. The electrolyte salt contains lithium salt A and lithium salt B. The lithium salt A is at least one selected from LiBF4, LiPF6, LiAsF6, and LiSbF6, and the lithium salt B is a lithium salt other than the lithium salt A. The electrolyte contains the lithium salt A in an amount of 2 mol % or more.Type: GrantFiled: December 10, 2002Date of Patent: November 20, 2007Assignee: Hitachi Maxell, Ltd.Inventors: Tetsuo Kawai, Atsushi Yamano, Noriyuki Yabushita, Tadashi Sakata, Hideki Nishihama
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Patent number: 7282304Abstract: A non-aqueous electrolyte battery of the present invention includes a non-aqueous electrolyte containing a lithium salt, a cyclic sultone derivative, and an acid anhydride, wherein the non-aqueous electrolyte contains the cyclic sultone derivative in an amount of 0.3 to 3% by mass and the non-aqueous electrolyte contains the acid anhydride in an amount of 0.3 to 3% by mass. Furthermore, the non-aqueous electrolyte battery includes at least one selected from a cyclic sultone derivative and an acid anhydride, and an electrolyte salt. The electrolyte salt contains lithium salt A and lithium salt B. The lithium salt A is at least one selected from LiBF4, LiPF6, LiAsF6, and LiSbF6, and the lithium salt B is a lithium salt other than the lithium salt A. The electrolyte contains the lithium salt A in an amount of 2 mol % or more.Type: GrantFiled: February 14, 2006Date of Patent: October 16, 2007Assignee: Hitachi Maxell, Ltd.Inventors: Tetsuo Kawai, Atsushi Yamano, Noriyuki Yabushita, Tadashi Sakata, Hideki Nishihama
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Publication number: 20060127778Abstract: A non-aqueous electrolyte battery of the present invention includes a non-aqueous electrolyte containing a lithium salt, a cyclic sultone derivative, and an acid anhydride, wherein the non-aqueous electrolyte contains the cyclic sultone derivative in an amount of 0.3 to 3% by mass and the non-aqueous electrolyte contains the acid anhydride in an amount of 0.3 to 3% by mass. Furthermore, the non-aqueous electrolyte battery includes at least one selected from a cyclic sultone derivative and an acid anhydride, and an electrolyte salt. The electrolyte salt contains lithium salt A and lithium salt B. The lithium salt A is at least one selected from LiBF4, LiPF6, LiAsF6, and LiSbF6, and the lithium salt B is a lithium salt other than the lithium salt A. The electrolyte contains the lithium salt A in an amount of 2 mol % or more.Type: ApplicationFiled: February 14, 2006Publication date: June 15, 2006Inventors: Tetsuo Kawai, Atsushi Yamano, Noriyuki Yabushita, Tadashi Sakata, Hideki Nishihama
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Publication number: 20060115728Abstract: A non-aqueous electrolyte battery of the present invention includes a non-aqueous electrolyte containing a lithium salt, a cyclic sultone derivative, and an acid anhydride, wherein the non-aqueous electrolyte contains the cyclic sultone derivative in an amount of 0.3 to 3% by mass and the non-aqueous electrolyte contains the acid anhydride in an amount of 0.3 to 3% by mass. Furthermore, the non-aqueous electrolyte battery includes at least one selected from a cyclic sultone derivative and an acid anhydride, and an electrolyte salt. The electrolyte salt contains lithium salt A and lithium salt B. The lithium salt A is at least one selected from LiBF4, LiPF6, LiAsF6, and LiSbF6, and the lithium salt B is a lithium salt other than the lithium salt A. The electrolyte contains the lithium salt A in an amount of 2 mol % or more.Type: ApplicationFiled: January 13, 2006Publication date: June 1, 2006Applicant: Hitachi Maxell, Ltd.Inventors: Tetsuo Kawai, Atsushi Yamano, Noriyuki Yabushita, Tadashi Sakata, Hideki Nishihama
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Patent number: 6709787Abstract: By eliminating a part of sulfur atoms of the polysulfide segment of the formula: —Sm— (m≧3) of an organic sulfur compound, a carbon polysulfide is synthesized, which comprises carbon and sulfur as constitutive elements and contains at least 67 wt. % of sulfur and at least 95 wt. % of carbon and sulfur in total, and which has a disulfide linkage formed by most of the sulfur atoms in the molecule and also has a highly uniform structure. A nonaqueous electrolytic battery which has a high capacity and shows a small decrease in capacity in association with cyclic charge and discharge is provided using this carbon polysulfide as an active material for the positive electrode.Type: GrantFiled: February 9, 2001Date of Patent: March 23, 2004Assignee: Hitachi Maxell, Ltd.Inventors: Jinbao Zhao, Shoko Ibuki, Hideki Nishihama, Ryo Nagai
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Publication number: 20030152839Abstract: A non-aqueous electrolyte battery of the present invention includes a non-aqueous electrolyte containing a lithium salt, a cyclic sultone derivative, and an acid anhydride, wherein the non-aqueous electrolyte contains the cyclic sultone derivative in an amount of 0.3 to 3% by mass and the non-aqueous electrolyte contains the acid anhydride in an amount of 0.3 to 3% by mass. Furthermore, the non-aqueous electrolyte battery includes at least one selected from a cyclic sultone derivative and an acid anhydride, and an electrolyte salt. The electrolyte salt contains lithium salt A and lithium salt B. The lithium salt A is at least one selected from LiBF4, LiPF6, LiAsF6, and LiSbF6, and the lithium salt B is a lithium salt other than the lithium salt A. The electrolyte contains the lithium salt A in an amount of 2 mol % or more.Type: ApplicationFiled: December 10, 2002Publication date: August 14, 2003Inventors: Tetsuo Kawai, Atsushi Yamano, Noriyuki Yabushita, Tadashi Sakata, Hideki Nishihama
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Publication number: 20010033971Abstract: By eliminating a part of sulfur atoms of the polysulfide segment of the formula: —Sm— (m≧3) of an organic sulfur compound, a carbon polysulfide is synthesized, which comprises carbon and sulfur as constitutive elements and contains at least 67 wt. % of sulfur and at least 95 wt. % of carbon and sulfur in total, and which has a disulfide linkage formed by most of the sulfur atoms in the molecule and also has a highly uniform structure. A nonaqueous electrolytic battery which has a high capacity and shows a small decrease in capacity in association with cyclic charge and discharge is provided using this carbon polysulfide as an active material for the positive electrode.Type: ApplicationFiled: February 9, 2001Publication date: October 25, 2001Inventors: Jinbao Zhao, Shoko Ibuki, Hideki Nishihama, Ryo Nagai
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Patent number: 4560631Abstract: An organic electrolyte cell comprising a light metal as the anode active material, and copper powder-added manganese dioxide as the cathode active material.Type: GrantFiled: October 3, 1984Date of Patent: December 24, 1985Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Hideki Nishihama, Kazuhide Miyazaki