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:
Mar. 14, 1978
Filed:
Oct. 06, 1976
Applicant:
Inventors:
John Barry Harbridge, Coulsdon, EN;
Thomas Trefor Howarth, Ewhurst, EN;
Assignee:
Beecham Group Limited, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
542416 ; 2603 / ; 424246 ; 424271 ; 424272 ;
Abstract
Compounds of the formula: ##STR1## wherein X is oxygen or sulphur, R is hydrogen or an inert organic group of up to 18 carbon atoms, and A is a group such that CO.sub.2 A represents a carboxylic acid group or a salt or ester thereof useful for their antibacterial activity and may be combined with a penicillin or cephalosporin to produce pharmaceutical compositions having enhanced antibacterial properties.