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. 05, 1985
Filed:
Oct. 03, 1983
Applicant:
Inventors:
Tai-Cheng Yang, Mahwah, NJ (US);
Krishna K Rao, Paterson, NJ (US);
I-der Huang, Upper Saddle River, NJ (US);
Assignee:
Exxon Research & Engineering Co., Florham Park, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
549239 ; 549245 ; 549248 ; 549253 ; 549256 ; 549257 ; 549250 ; 549260 ;
Abstract
A heterogeneous process for preparing a vanadium-phosphorus-oxygen containing catalyst for use in the preparation of carboxylic anhydrides is disclosed. This process employs an activation procedure in an air-hydrocarbon atmosphere.