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:
Feb. 19, 1991
Filed:
Mar. 13, 1989
Applicant:
Inventor:
Andrew P Chapple, Wrexham, GB;
Assignee:
Unilever Patent Holdings B.V., Rotterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
502 64 ; 502 68 ; 502234 ; 502251 ;
Abstract
A silica-magnesia cogelled material is usable as a base for petroleum cracking catalysts based on zeolites. Invention described provides cogel base in which the silica and magnesia components are intimately mixed. This feature is achieved by controlling the pH during the mixing procedure.