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:
May. 28, 1991
Filed:
Oct. 26, 1988
Muin S Haddad, Naperville, IL (US);
William S Eryman, Naperville, IL (US);
Amoco Corporation, Chicago, IL (US);
Abstract
Novel maleic anhydride catalysts comprising phosphorus-vanadium oxides and phosphorus-vanadium-co-metal oxides wherein said catalysts do not expand under reaction conditions for the manufacture of maleic anhydride and a process for preparing these catalysts are disclosed. The process comprises reacting a vanadium compound with a phosphoryl halide in the presence of water in an atmosphere comprising at least about 0.1% oxygen wherein the molar ratio of water to phosphorus from the phosphoryl halide is in the range of about 2.25:1 to about 3.75:1.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile