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. 04, 1976
Filed:
Oct. 18, 1974
Applicant:
Inventor:
Rudolf Brockhaus, Marl, DT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 2604 / ; 2605 / ; 2605 / ;
Abstract
Vanadate catalysts used in the preparation of acetic acid by gas-phase oxidation of butenes and of oxygen compounds derived from butene or from propane in the presence of steam are improved by treating with hydrochloric acid, following calcining, and then washing, drying and calcining a second time.