Patents Assigned to M. Watanabe
  • Polymer electrolyte electrochemical cell and process of preparing same
    Patent number: 5607785
    Abstract: Disclosed herein are several aspects processes of preparing a polymer electrolyte electrochemical cell in which supply of a reaction gas and discharge of an obtained gas can be smoothly conducted. This can be achieved by forming through apertures in a cathode or by forming a gradient of ion exchange resin concentration of a catalyst particle cluster size.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: March 4, 1997
    Assignees: Tanaka Kikinzoku Kogyo K.K., M. Watanabe, Stonehart Associates Inc.
    Inventors: Takeshi Tozawa, Nobuhito Toshima