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:
Sep. 09, 2003
Filed:
Jul. 21, 2000
Applicant:
Inventors:
Todd Howard Ballinger, Audubon, PA (US);
Paul Joseph Andersen, Plymouth Meeting, PA (US);
Assignee:
Johnson Matthey Public Limited Company, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 2/906 ; B01J 2/9068 ;
U.S. Cl.
CPC ...
B01J 2/906 ; B01J 2/9068 ;
Abstract
An active metal, particularly cesium, impregnated hydrocarbon adsorbent, such as zeolite, comprises an improved hydrocarbon trap/oxidizing catalyst for use in effectively adsorbing hydrocarbons during automotive cold-start and subsequently desorbing, oxidizing and removing hydrocarbons during warmer operating conditions. The active metal modified hydrocarbon adsorbent may be combined in other forms of multi-layer automotive exhaust gas catalytic structures.