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:
Jun. 29, 1976
Filed:
Apr. 15, 1974
Applicant:
Inventors:
Philip Kenerick Maher, Baltimore, MD (US);
Carl Vance McDaniel, Laurel, MD (US);
Assignee:
W. R. Grace & Co., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423328 ;
Abstract
An ultra thermal stable zeolite aluminosilicate having a silica to alumina ratio of 2.5 to <3.5 and a process of making this composition characterized by ammonia ion exchange, followed by calcination at from 1000.degree. to 1400.degree.F. The composition is further characterized by sodium content expressed as the oxide of less than 4 percent.