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:
Aug. 07, 1990
Filed:
Aug. 21, 1989
Applicant:
Inventors:
Assignee:
Bayer Aktiengesellschaft, Leverkusen-Bayerwerk, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01J / ; C01B / ;
U.S. Cl.
CPC ...
423212 ; 423239 ;
Abstract
An improvement in the removal of nitrogen oxides from the exhaust gases of internal combustion engines is achieved by adding urea or a urea-containing reducing agent to the exhaust gases and contacting the gases under oxidizing conditions with a zeolite containing catalyst.
Held, Wolfgang. (1990). Process for the reduction of the nitrogen oxides in exhaust gases using (U.S. Patent No. 4946659). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4946659
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile