Patents by Inventor Takuma Kimura

Takuma Kimura 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 an exhaust gas purifying method using the catalyst
    Patent number: 5238890
    Abstract: The catalyst for purifying an exhaust gas has at least gailium and a zeolite and an exhaust gas purifying method using the catalyst. Nitrogen oxides in the exhaust gas are reduced and eliminated by the catalyst in an oxidative atmosphere at a reaction temperature of 200.degree. to 800.degree. C. and under the presence of a hydrocarbon at the total THC concentration/NO.sub.x concentration of from 0.5 to 50.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: August 24, 1993
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Toshiaki Hayasaka, Takuma Kimura