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:
Mar. 03, 1992
Filed:
Jul. 06, 1989
Applicant:
Inventors:
Motomu Oh-Kita, Otake, JP;
Toru Kuroda, Otake, JP;
Yutaka Kinoshita, Otake, JP;
Kazuhiro Ishii, Otake, JP;
Assignee:
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
562534 ; 502200 ; 502209 ;
Abstract
A process for producing methacrylic acid which includes subjecting methacrolein to gaseous phase catalytic oxidation using molecular oxygen and a catalyst represented by the general formula: