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:
Nov. 03, 1981
Filed:
Jun. 13, 1978
Applicant:
Inventors:
Koji Moriya, Osaka, JP;
Itsuo Furuoya, Osaka, JP;
Assignee:
Takeda Chemical Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
26034675 ;
Abstract
Maleic anhydride is obtained in a high yield as well as in a high purity by oxidation of a hydrocarbon of not less than four carbon atoms in gaseous phase in the presence of a catalyst comprising (a) vanadium oxide, (b) phosphorus oxide, (c) thallium oxide and/or alkaline earth metal oxide, and if necessary, further containing (d) iron oxide.
Moriya, Koji. (1981). Production of maleic anhydride (U.S. Patent No. 4298533). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4298533
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile