Patents by Inventor Kazuaki Hokano

Kazuaki Hokano 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).

  • Positive electrode for lithium-ion secondary battery and lithium-ion secondary battery comprising that positive electrode
    Patent number: 8728663
    Abstract: To provide a sulfur-system positive electrode for lithium-ion battery, sulfur-system positive electrode which is good in the cyclability and the other characteristics, and a lithium-ion secondary battery including that positive electrode. In a positive electrode for lithium-ion secondary battery, the positive electrode having: a current collector; and an electrode layer that is formed on a surface of the current collector, and which includes a binder resin, an active material and a conductive additive, the positive electrode is characterized in that the active material includes a sulfur-modified polyacrylonitrile that is produced by heating a raw-material powder including a sulfur powder and a polyacrylonitrile powder in an enclosed nonoxidizing atmosphere; and the binder resin includes a polyimide resin and/or a polyamide-imide resin.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: May 20, 2014
    Assignees: Kabushiki Kaisha Toyota Jidoshokki, National Institute of Advanced Industrial Science and Technology
    Inventors: Junichi Niwa, Kazuaki Hokano, Masataka Nakanishi, Akira Kojima, Kazuhito Kawasumi, Takuhiro Miyuki, Tetsuo Sakai
  • POSITIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY AND LITHIUM-ION SECONDARY BATTERY COMPRISING THAT POSITIVE ELECTRODE
    Publication number: 20130029222
    Abstract: To provide a sulfur-system positive electrode for lithium-ion battery, sulfur-system positive electrode which is good in the cyclability and the other characteristics, and a lithium-ion secondary battery including that positive electrode. In a positive electrode for lithium-ion secondary battery, the positive electrode having: a current collector; and an electrode layer that is formed on a surface of the current collector, and which includes a binder resin, an active material and a conductive additive, the positive electrode is characterized in that: the active material includes a sulfur-modified polyacrylonitrile that is produced by heating a raw-material powder including a sulfur powder and a polyacrylonitrile powder in an enclosed nonoxidizing atmosphere; and the binder resin includes a polyimide resin and/or a polyamide-imide resin.
    Type: Application
    Filed: April 12, 2011
    Publication date: January 31, 2013
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Junichi Niwa, Kazuaki Hokano, Masataka Nakanishi, Akira Kojima, Kazuhito Kawasumi, Takuhiro Miyuki, Tetsuo Sakai