The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 08, 1997
Filed:
May. 30, 1995
Satoshi Sumiya, Kumagaya, JP;
Seiji Makino, Kumagaya, JP;
Kiyohide Yoshida, Kumagaya, JP;
Yoshikazu Takahashi, Kumagaya, JP;
Masataka Furuyama, Kumagaya, JP;
Akira Abe, Kumagaya, JP;
Nobuyuki Matsumura, Kumagaya, JP;
Gyo Muramatsu, Kumagaya, JP;
Kabushiki Kaisha Riken, Tokyo, JP;
Abstract
The method of cleaning an exhaust gas containing nitrogen oxides including disposing an exhaust gas cleaner comprising a heat-resistant, porous body, which may support a catalyst consisting essentially of (a) at least one of alkali metal elements; (b) at least one of elements selected from the group consisting of Cu, Co, Mn and V, (c) at least one of rare earth elements, in a flow path of the exhaust gas, spraying a liquid hydrocarbon into a stream of the exhaust gas on the upstream side of the exhaust gas cleaner, thereby causing atomized and gasified hydrocarbon to function as a reducing agent for reducing the nitrogen oxides in the exhaust gas.