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. 18, 1997
Filed:
Feb. 28, 1995
Applicant:
Inventors:
Roberto Ruggieri, Milan, IT;
Salvatore Cassarino, Rome, IT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549262 ;
Abstract
In producing maleic anhydride by catalytic oxidation of butane in vapor phase, the reaction mixture consists of butane and a recycle gaseous current made of compressed air and exhaust gas recovered from the absorption stage by a solvent of the maleic anhydride produced; oxygen and total butane concentration in the recycle stream are controlled.
Ruggieri, Roberto. (1997). Process to recycle exhaust gases from n-butane conversion into maleic (U.S. Patent No. 5688970). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5688970
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile