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. 08, 1977
Filed:
Nov. 12, 1974
Applicant:
Inventors:
Christian Berger, Le Plessis Robinson, FR;
Daniel Farge, Thiais, FR;
Georges Gros, Bourg-la-Reine, FR;
Mayer Naoum Messer, Bievres, FR;
Claude Moutonnier, Le Plessis-Robinson, FR;
Assignee:
Rhone-Poulenec S.A., Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2602 / ; 424246 ;
Abstract
New cephalosporin derivatives of the formula: ##STR1## wherein one of A and A.sub.1 represents oxygen or sulphur and the other represents sulphur, R.sub.1 represents hydrogen, acetoxy, (5-methyl-1,3,4-thiadiazol-2-yl)thio or (1-methyl-1,2,3,4-tetrazol-5-yl)thio and R.sub.2 represents carboxy, or R.sub.1 represents a pyridinio radical and R.sub.2 represents the carboxylate ion, are therapeutically useful compounds possessing antibacterial properties.