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:
Dec. 18, 1979
Filed:
Feb. 26, 1979
Applicant:
Inventors:
Haren S Gandhi, Farmington Hills, MI (US);
Mordecai Shelef, Birmingham, MI (US);
Paul P Wynblatt, Southfield, MI (US);
Assignee:
Ford Motor Company, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ;
U.S. Cl.
CPC ...
252472 ; 4232135 ; 423239 ;
Abstract
The specification teaches a method of enriching a catalyst system in which both platinum and rhodium are present. The enrichment increases the amount of rhodium which is actively available for use as a catalyst. The enrichment is brought about by thermally aging the catalyst system in an oxidizing atmosphere by heating it to a temperature in a range from 650.degree. C. to 875.degree. C. for a period of at least two hours. A thermal aging at a temperature of about 800.degree. C. for a period of 4 to 8 hours is preferred.