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:
Oct. 03, 1989
Filed:
Sep. 19, 1988
Applicant:
Inventors:
Clarence D Chang, Princeton, NJ (US);
Cynthia T-W Chu, Princeton, NJ (US);
Carol S Lee, Princeton, NJ (US);
Randall D Partridge, Trenton, NJ (US);
Assignee:
Mobil Oil Corp., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ;
U.S. Cl.
CPC ...
502 86 ; 502 26 ;
Abstract
Alumina-composited zeolite catalysts are activated by contact with an aqueous ammonium solution under ammonia gas pressure such that a pH of at least about 10 is maintained in the solution. The treated zeolite may thereafter be calcined without prior ammonium-exchange to provide the zeolite in the hydrogen form.
Chang, Clarence. (1989). Ammonium activation of zeolites in the presence of gaseous ammonia (U.S. Patent No. 4871702). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4871702
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile