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:
May. 21, 1991
Filed:
Sep. 25, 1989
Applicant:
Inventor:
Harold L Harris, Houston, TX (US);
Assignee:
Harris International Sales Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
60299 ; 422176 ; 422177 ; 422180 ;
Abstract
Improved emission control apparatus for use with an internal combustion engine having a housing with an inlet and outlet, the outlet being connected to the exhaust of the engine. Mounted in the housing at spaced locations are first and second catalytic cells through which the engine exhaust gases pass for conversion to less noxious compounds. Some of the gases passing through the first catalytic cell are returned upstream thereof for recirculation through said first catalytic cell. All of the gases pass through the second catalytic cell.