Patents by Inventor Isao Naitoh

Isao Naitoh 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).

  • NO.sub.x decomposition catalyst and exhaust gas purifier using said catalyst
    Patent number: 5728643
    Abstract: The present invention provides an NO.sub.x decomposition catalyst which can decompose NO.sub.x in exhaust gas to decrease the amount of NO.sub.x in exhaust gas and is improved in durability through suppression of thermal decomposition thereof, and an exhaust gas purifier wherein said catalyst is used. This NO.sub.x decomposition catalyst is a compound having a brownmillerite type structure represented by the general formula: A.sub.3-X B.sub.X C.sub.4-Y D.sub.Y O.sub.Z, the carbon content of which compound may be at most 1.25 wt. %. This NO.sub.x decomposition catalyst can be used in an exhaust gas purifier applicable to an internal combustion engine.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: March 17, 1998
    Assignee: Isuzu Ceramics Research Institute Co., Ltd.
    Inventors: Isao Naitoh, Kazuo Ohsumi