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:
Feb. 14, 1984
Filed:
Oct. 22, 1982
Applicant:
Inventors:
Gordon J Sterken, Cincinnati, OH (US);
Ramamurthi Kannan, Edgewood, KY (US);
James E Kassner, Edgewood, KY (US);
Assignee:
Sterling Drug Inc., New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562441 ;
Abstract
Substituted 2-benzoylbenzoic acids, useful as intermediates for preparing valuable chromogenic phthalide compounds, are prepared by reacting certain substituted 3,3-diphenylphthalides with a lower alkanoic acid and water.
Quick Actions:
Sterken, Gordon. (1984). Process for preparing 2-benzoylbenzoic acids (U.S. Patent No. 4431840). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4431840
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile