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. 24, 1984
Filed:
Dec. 09, 1982
Applicant:
Inventors:
Assignee:
Ube Industries, Ltd., Yamaguchi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
502211 ; 502209 ; 502210 ; 502212 ;
Abstract
A heteropolyacid type catalyst capable of producing methacrylic acid from methacrolein and molecular oxygen at an extremely high yield for a long time at a relatively low temperature for a short contacting time under a vapor phase is provided. This catalyst is prepared by: