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:
Dec. 08, 1981
Filed:
Sep. 22, 1980
Applicant:
Inventor:
Marshall C Freerks, Kirkwood, MO (US);
Assignee:
Monsanto Company, St. Louis, MO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
26034675 ; 252432 ;
Abstract
Catalyst activity is substantially increased in phosphorus-vanadium-oxygen catalysts for the preparation of maleic anhydride from saturated hydrocarbons having 4 to 10 carbon atoms by the addition of boron to the catalyst composition.
Freerks, Marshall. (1981). Process for manufacturing maleic anhydride (U.S. Patent No. 4304723). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4304723
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile