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. 19, 1991
Filed:
Dec. 18, 1989
Applicant:
Inventor:
William J Coates, Welwyn Garden City, GB;
Assignee:
Smith Kline & French Laboratories Limited, Welwyn Garden City, GB;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ; A61K / ;
U.S. Cl.
CPC ...
514242 ; 514182 ;
Abstract
Phosphodiesterase (type III) inhibitors having the formula: ##STR1## wherein R.sup.4 is hydrogen and A is a dihydro-1,2,4-triazin-3-one group or a dihydro-1,2,4-triazin-6-one group which are useful in stimulating cardiac activity and in treating congestive heart failure and bronchoconstriction, pharmaceutical compositions including these inhibitors, and methods of using these compounds to produce phosphodiesterase (type III) inhibition in mammals.