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:
Jun. 19, 1990
Filed:
Dec. 07, 1988
Applicant:
Inventors:
Kotaro Hayashi, Susono, JP;
Tokuta Inoue, Mishima, JP;
Sumio Ito, Gotenba, JP;
Kiyoshi Kobashi, Mishima, JP;
Shinichi Takeshima, Susono, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
60297 ; 55 75 ; 55316 ; 55389 ; 55DI / ; 60311 ; 422169 ; 422174 ; 4232137 ; 4232155 ; 4232451 ;
Abstract
An exhaust emission gas control device having a first filter trapping particulates contained in an exhaust gas, and a second filter removing offensive odor components in the exhaust gas. The first filter is a honeycomb type having a cordierite substrate on which .tau.-alumina is coated. The second filter is provided downstream of the first filter, and is formed by an ion-exchange of copper on a synthetic zeolite rich in silica to form copper ions thereon.