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:
Jul. 12, 1994
Filed:
May. 26, 1993
Applicant:
Inventors:
Ikuya Matsuura, Toyama, JP;
Yukio Aoki, Hyogo, JP;
Assignee:
Nippon Shokubai Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562534 ; 562532 ; 562535 ; 502209 ;
Abstract
A method of preparing methacrolein and/or methacrylic acid by catalytic gas phase oxidation of isobutane in the presence of a catalyst, wherein said catalyst is a catalyst containing divanadyl pyrophosphate and represented by general formula (1)