Patents by Inventor Shoji Maezawa

Shoji Maezawa 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).

  • Electroless plating bath of iridium
    Patent number: 5865881
    Abstract: The present invention relates to a plating bath of the hydrazine type for electroless plating on the surface of a plated substance with iridium. The first plating bath is an electroless plating bath of iridium which contains a hydrazine complex of iridium and has pH of 1-7. The second plating bath is an electroless plating bath of iridium which contains hydrazine hydrate and/or hydrazinium salt, and iridium halide and/or halogenoiridate in the molar ratio of 1-1.0 and has pH of lower than 3. The plating bath of this invention is used, for example, for producing of a junction of a cation exchange membrane and iridium, which is used for a water electrolytic cell of the macromolecule solid electrolyte type.
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: February 2, 1999
    Assignees: Research Institute of Innovative Technology, Agency of Industrial Science and Technology
    Inventors: Hiroaki Mori, Shoji Maezawa, Keisuke Oguro, Eiichi Torikai