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:
Aug. 27, 1991
Filed:
Mar. 08, 1990
Applicant:
Inventors:
Joydeep Kant, Liverpool, NY (US);
Chester Sapino, Jr, E. Syracuse, NY (US);
Assignee:
Bristol-Myers Squibb Company, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
540215 ; 540222 ; 540228 ; 540229 ; 540230 ;
Abstract
Cephalosporin intermediates having a replacable organosulfonylyoxy or heterocyclothio group in the 3-position undergo a carbon alkylation process with organocopper reagents to provide 3-hydrocarbon substituted cephalosporin antibiotics.
Kant, Joydeep. (1991). Process for production of cephalosporins (U.S. Patent No. 5043439). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5043439
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile