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. 03, 1985
Filed:
Jun. 20, 1984
Applicant:
Inventors:
Brian Harrison, Oxfordshire, GB;
Alan F Diwell, Oxfordshire, GB;
Assignee:
Johnson Matthey Public Limited Company, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
502304 ; 502328 ; 4232135 ;
Abstract
A process for improving the lead tolerance of a motor vehicle exhaust purification catalyst system of the type comprising a platinum group metal catalyst carried on alumina. The improvement derives from impregnating the alumina with barium moiety and firing at at least 400.degree. C. before subsequent impregnation with the metal catalyst moiety.
Harrison, Brian. (1985). Process for making a lead-tolerant catalyst system for purifying exhaust (U.S. Patent No. 4539311). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4539311
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile