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. 07, 1992
Filed:
Mar. 29, 1991
Applicant:
Inventors:
David M Clark, Waterloo, GB;
Ronald J Dogterom, Amsterdam, NL;
Bettina Kraushaar-Czarnetzki, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423328 ; 502208 ; 502214 ;
Abstract
Crystalline aluminophosphates and related compounds having in the as-synthesized anhydrous form the chemical composition mR(X.sub.n Al.sub.q P.sub.x)O.sub.2, wherein R represents 1,4-diaminobutane as defined hereinbefore, X represents one or more elements which can be substituted for Al and/or P, wherein