Patents by Inventor Tatsuhiro Higashi

Tatsuhiro Higashi 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).

  • Method and apparatus for recycling electrode material of lithium secondary battery
    Patent number: 7713396
    Abstract: Lithium cobaltate forming the positive electrode of a lithium secondary battery is subjected together with lithium metal to reducing reaction in molten lithium chloride to produce lithium oxide and to precipitate and separate cobalt or cobalt oxide. The lithium oxide is subjected to electro-deposition in molten lithium chloride contained in a lithium electro-deposition tank provided with an anode and a cathode to recover lithium metal deposited on the cathode.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: May 11, 2010
    Assignees: Kawasaki Jukogyo Kabushiki Kaisha, Research Institute of Innovative Technology for the Earth
    Inventors: Toshiya Kakuta, Shingo Hirata, Tatsuhiro Higashi, Seiichiro Yamazaki
  • Method and apparatus for recycling electrode material of lithium secondary battery
    Publication number: 20050241943
    Abstract: Lithium cobaltate forming the positive electrode of a lithium secondary battery is subjected together with lithium metal to reducing reaction in molten lithium chloride to produce lithium oxide and to precipitate and separate cobalt or cobalt oxide. The lithium oxide is subjected to electro-deposition in molten lithium chloride contained in a lithium electro-deposition tank provided with an anode and a cathode to recover lithium metal deposited on the cathode.
    Type: Application
    Filed: July 7, 2005
    Publication date: November 3, 2005
    Applicants: Kawasaki Jukogyo Kabushiki Kaisha, Research Institute of Innovative Technology For The Earth
    Inventors: Toshiya Kakuta, Shingo Hirata, Tatsuhiro Higashi, Seiichiro Yamazaki