Patents by Inventor Yukiharu Nishikawa

Yukiharu Nishikawa 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).

  • Cadmium negative electrode for use in an alkaline storage cell and its manufacturing method
    Patent number: 4990414
    Abstract: A rechargeable alkaline storage cell mainly comprising a negative electrode including polyvinyl pyrolidone having a degree of polymerization of 350 to 1,000, a positive electrode, and an alkaline electrolyte, and its manufacturing method are disclosed. This invention may be employed for the sintering method or for the non-sintering method of manufacturing a negative electrode.
    Type: Grant
    Filed: February 8, 1990
    Date of Patent: February 5, 1991
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kazuhiro Matsui, Akira Sugano, Ichirou Yoshida, Yukiharu Nishikawa, Toshiaki Shiojiri, Takahisa Awajitani, Shinsuke Nakahori, Yuji Morioka