Patents by Inventor Isao Tan

Isao Tan 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).

  • 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
  • Exhaust gas purifying catalyst
    Publication number: 20020061816
    Abstract: To provide an exhaust gas purifying catalyst that requires a smallest possible quantity of rhodium for developing the activity effectively, so as to produce an excellent purifying performance economically, a zirconium complex oxide on which rhodium and platinum are previously supported, and a cerium complex oxide on which platinum and/or palladium are previously supported are contained in an exhaust gas purifying catalyst.
    Type: Application
    Filed: September 24, 2001
    Publication date: May 23, 2002
    Inventors: Mari Uenishi, Isao Tan, Hirohisa Tanaka
  • Exhaust gas purifying catalyst
    Publication number: 20020032124
    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: Application
    Filed: July 12, 2001
    Publication date: March 14, 2002
    Inventors: Isao Tan, Mari Uenishi, Hirohisa Tanaka
  • Catalytic converter for cleaning exhaust gas
    Patent number: 6261989
    Abstract: A catalytic converter for cleaning exhaust gas includes a heat-resistant support, and a catalytic coating formed on the heat-resistant support. The catalytic coating contains Pd-carrying particles of a cerium complex oxide, Pt & Rh-carrying particles of zirconium complex oxide, and particles of a heat-resistant inorganic oxide.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: July 17, 2001
    Assignees: Daihatsu Motor Co., Ltd., Cataler Corporation
    Inventors: Hirohisa Tanaka, Isao Tan, Koji Yamada, Mari Yamamoto, Shinji Matsuura, Yasunori Sato