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:
Apr. 23, 1985
Filed:
Aug. 22, 1983
Applicant:
Inventors:
Julius Scherzer, Anaheim, CA (US);
Adrian P Humphries, Claremont, CA (US);
Assignee:
Harshaw/Filtrol, Oakland, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423328 ; 502 79 ;
Abstract
Faujasite-type zeolites of high catalytic activity, low coke-forming property and stable crystalline structure are prepared by using a combination of hydrothermal treatment and ion exchange resin removal of aluminum from the crystalline structure of the zeolites. The process allows for a substantial increase of the silica-to-alumina ratio in the zeolite without detrimentally affecting the strength of the structure.