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).

  • Patent number: 7384708
    Abstract: 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: Grant
    Filed: January 13, 2006
    Date of Patent: June 10, 2008
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Tetsuo Kawai, Atsushi Yamano, Noriyuki Yabushita, Tadashi Sakata, Hideki Nishihama
  • Patent number: 7297447
    Abstract: 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: Grant
    Filed: December 10, 2002
    Date of Patent: November 20, 2007
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Tetsuo Kawai, Atsushi Yamano, Noriyuki Yabushita, Tadashi Sakata, Hideki Nishihama
  • Patent number: 7282304
    Abstract: 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: Grant
    Filed: February 14, 2006
    Date of Patent: October 16, 2007
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Tetsuo Kawai, Atsushi Yamano, Noriyuki Yabushita, Tadashi Sakata, Hideki Nishihama
  • Publication number: 20060127778
    Abstract: 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: Application
    Filed: February 14, 2006
    Publication date: June 15, 2006
    Inventors: Tetsuo Kawai, Atsushi Yamano, Noriyuki Yabushita, Tadashi Sakata, Hideki Nishihama
  • Publication number: 20060115728
    Abstract: 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: Application
    Filed: January 13, 2006
    Publication date: June 1, 2006
    Applicant: Hitachi Maxell, Ltd.
    Inventors: Tetsuo Kawai, Atsushi Yamano, Noriyuki Yabushita, Tadashi Sakata, Hideki Nishihama
  • Patent number: 6709787
    Abstract: 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: Grant
    Filed: February 9, 2001
    Date of Patent: March 23, 2004
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Jinbao Zhao, Shoko Ibuki, Hideki Nishihama, Ryo Nagai
  • Publication number: 20030152839
    Abstract: 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: Application
    Filed: December 10, 2002
    Publication date: August 14, 2003
    Inventors: Tetsuo Kawai, Atsushi Yamano, Noriyuki Yabushita, Tadashi Sakata, Hideki Nishihama
  • Publication number: 20010033971
    Abstract: 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: Application
    Filed: February 9, 2001
    Publication date: October 25, 2001
    Inventors: Jinbao Zhao, Shoko Ibuki, Hideki Nishihama, Ryo Nagai
  • Patent number: 4560631
    Abstract: 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: Grant
    Filed: October 3, 1984
    Date of Patent: December 24, 1985
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Hideki Nishihama, Kazuhide Miyazaki