Patents Assigned to Nippon Gaishi Kabushiki Kaisha
  • Catalyst for purifying exhaust gas from an internal combustion engine
    Patent number: 4237030
    Abstract: A catalyst support characterized by having a total pore volume ranging 0.05-0.5 cc/g. an average pore diameter ranging from 0.05-5.mu. and consisting mainly of .alpha.-alumina; and an internal combustion engine exhaust gas purifying catalyst made of said catalyst support carrying a catalytic agent.
    Type: Grant
    Filed: July 10, 1978
    Date of Patent: December 2, 1980
    Assignees: Toyota Jidosha Kogyo Kabushiki Kaisha, Nippon Gaishi Kabushiki Kaisha
    Inventors: Masaaki Noguchi, Tsuchio Bunda, Noboru Yamamoto, Shigeo Soejima