Patents Assigned to Stonehart Associates, Inc.
  • Electrocatalyst and process of preparing same
    Patent number: 5189005
    Abstract: Disclosed herein are a platinum alloy catalyst comprising an electroconductive support and platinum-nickel-cobalt alloy particles having an ordered structure supported on the electroconductive support, and a process of preparing the catalyst. The catalyst possesses higher activity and longer durability because of its ordered structure.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: February 23, 1993
    Assignees: Tanaka Kikinzoku Kogyo K.K., Stonehart Associates, Inc.
    Inventors: Masahiro Watanabe, Paul Stonehart, Kazunori Tsurumi, Nobuo Yamamoto, Noriaki Hara, Toshihide Nakamura