Patents by Inventor Yuuko Ogawa

Yuuko Ogawa 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).

  • Negative electrode for lithium secondary battery, lithium secondary battery using same, and methods for manufacturing those
    Patent number: 8076027
    Abstract: A negative electrode for a secondary battery includes a separator; a negative electrode active material layer which is fixed to the separator and can store and emit lithium ions; and a current collector layer formed on the side of the separator opposite to the negative electrode active material layer. The negative electrode active material layer contains at least one selected from the group consisting of silicon, silicon alloys, compounds containing silicon and oxygen, compounds containing silicon and nitrogen, compounds containing silicon and fluorine, tin, tin alloys, compounds containing tin and oxygen, compounds containing tin and nitrogen, and compounds containing tin and fluorine.
    Type: Grant
    Filed: January 23, 2006
    Date of Patent: December 13, 2011
    Assignee: Panasonic Corporation
    Inventors: Kazuyoshi Honda, Yuuko Ogawa, Yasutaka Kogetsu
  • Negative electrode for lithium ion secondary battery and method for producing the negative electrode
    Patent number: 7767341
    Abstract: A negative electrode for a lithium ion secondary battery including a current collector and an active material layer carried on the current collector, wherein the active material layer includes an active material and no binder, the active material contains silicon and nitrogen, and the active material layer has a larger nitrogen ratio on a side of a first face which is in contact with the current collector than on a side of a second face which is not in contact with the current collector.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: August 3, 2010
    Assignee: Panasonic Corporation
    Inventors: Yasutaka Kogetsu, Kazuyoshi Honda, Yuuko Ogawa
  • NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, LITHIUM SECONDARY BATTERY USING SAME, AND METHODS FOR MANUFACTURING THOSE
    Publication number: 20090017380
    Abstract: A negative electrode for a secondary battery includes a separator; a negative electrode active material layer which is fixed to the separator and can store and emit lithium ions; and a current collector layer formed on the side of the separator opposite to the negative electrode active material layer. The negative electrode active material layer contains at least one selected from the group consisting of silicon, silicon alloys, compounds containing silicon and oxygen, compounds containing silicon and nitrogen, compounds containing silicon and fluorine, tin, tin alloys, compounds containing tin and oxygen, compounds containing tin and nitrogen, and compounds containing tin and fluorine.
    Type: Application
    Filed: January 23, 2006
    Publication date: January 15, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Kazuyoshi Honda, Yuuko Ogawa, Yasutaka Kogetsu
  • Negative electrode for lithium ion secondary battery and method for producing the negative electrode
    Publication number: 20060292445
    Abstract: A negative electrode for a lithium ion secondary battery including a current collector and an active material layer carried on the current collector, wherein the active material layer includes an active material and no binder, the active material contains silicon and nitrogen, and the active material layer has a larger nitrogen ratio on a side of a first face which is in contact with the current collector than on a side of a second face which is not in contact with the current collector.
    Type: Application
    Filed: June 23, 2006
    Publication date: December 28, 2006
    Inventors: Yasutaka Kogetsu, Kazuyoshi Honda, Yuuko Ogawa