Patents Examined by Anthony Kuhra
  • Exhaust gas purifying catalyst
    Patent number: 6620762
    Abstract: To provide an exhaust gas purifying catalyst that can develop good catalytic activity even in high-temperature endurance and also produce excellent low-temperature property, a coating layer having an outside layer and an inside layer is formed on a catalyst carrier, the outside layer being made to contain a noble metal previously supported on a heat-resisting oxide and a cerium complex oxide, and the inside layer being made to contain a heat-resisting oxide on which no noble metal is supported.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: September 16, 2003
    Assignee: Daihatsu Motor Co., Ltd.
    Inventors: Isao Tan, Mari Uenishi, Hirohisa Tanaka