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:
May. 18, 1999
Filed:
Sep. 02, 1997
Applicant:
Inventors:
Nabil Rizkalla, Riverdale, NJ (US);
Rita Klein, Westwood, NJ (US);
Stephen Bruce Milne, Wayne, NJ (US);
Assignee:
Scientific Design Company, Inc., Little Ferry, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
502216 ; 502208 ; 502217 ; 502218 ; 502224 ; 502231 ; 502353 ; 502354 ; 502344 ; 502347 ; 502348 ;
Abstract
A silver catalyst for ethylene oxidation to ethylene oxide is provided containing a promoter combination consisting of an alkali metal component, a sulfur component, a fluorine component, and a pnictogen component from the group phosphorus, bismuth and antimony; the catalyst is essentially free of rhenium and transition metal components.