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:
Jan. 31, 1984
Filed:
Nov. 22, 1982
Applicant:
Inventor:
Chelliah Daniel, Columbus, OH (US);
Assignee:
Ashland Oil, Inc., Ashland, KY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549258 ; 502211 ;
Abstract
A process for the oxidation of n-butane, n-butenes, 1,3-butadiene and mixtures thereof to maleic anhydride in the vapor phase over a catalyst having the empirical formula Cu.sub.a P.sub.b Mn.sub.c Mo.sub.d O.sub.x wherein a is 0.001 to 1.0, b is 0.01 to 2.0, c is 0.001 to 2.0, d is 1.0 to 20.0, and x is a number which satisfies the unshared valences of the other elements in the formula is described.