Patents by Inventor Tsuguhiro Ohnuma

Tsuguhiro Ohnuma 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 and method of producing same
    Patent number: 7208444
    Abstract: An exhaust gas purifying catalyst for purifying exhaust gas discharged from an internal combustion engine of an automotive vehicle. The exhaust gas purifying catalyst comprises a substrate on which a catalytic coat layer containing a catalyst component is formed. The catalytic coat layer is formed by coating a slurry containing the catalyst component on a surface of the substrate. A crack-preventing coat layer is formed on an upper-most surface of the catalytic coat layer. The crack-preventing coat layer has a thickness of not larger than 50 ?m.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: April 24, 2007
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hiroto Kikuchi, Tsuguhiro Ohnuma, Motohisa Kamijo
  • Exhaust gas purifying catalyst and method of producing same
    Publication number: 20050170958
    Abstract: An exhaust gas purifying catalyst for purifying exhaust gas discharged from an internal combustion engine of an automotive vehicle. The exhaust gas purifying catalyst comprises a substrate on which a catalytic coat layer containing a catalyst component is formed. The catalytic coat layer is formed by coating a slurry containing the catalyst component on a surface of the substrate. A crack-preventing coat layer is formed on an upper-most surface of the catalytic coat layer. The crack-preventing coat layer has a thickness of not larger than 50 ?m.
    Type: Application
    Filed: March 28, 2005
    Publication date: August 4, 2005
    Inventors: Hiroto Kikuchi, Tsuguhiro Ohnuma, Motohisa Kamijo
  • Exhaust gas purifying catalyst and method of producing same
    Publication number: 20010021358
    Abstract: An exhaust gas purifying catalyst for purifying exhaust gas discharged from an internal combustion engine of an automotive vehicle. The exhaust gas purifying catalyst comprises a substrate on which a catalytic coat layer containing a catalyst component is formed. The catalytic coat layer is formed by coating a slurry containing the catalyst component on a surface of the substrate. A crack-preventing coat layer is formed on an upper-most surface of the catalytic coat layer. The crack-preventing coat layer has a thickness of not larger than 50 &mgr;m.
    Type: Application
    Filed: February 28, 2001
    Publication date: September 13, 2001
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Hiroto Kikuchi, Tsuguhiro Ohnuma, Motohisa Kamijo