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:
May. 26, 1992
Filed:
Dec. 21, 1990
Applicant:
Inventor:
Donald W Combs, Piscataway, NJ (US);
Assignee:
Ortho Pharmaceutical Corporation, Paritan, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; A61K / ;
U.S. Cl.
CPC ...
5142298 ; 544101 ;
Abstract
The invention relates to novel compounds, 2,9-dihydro(6 or 7)-3-oxo-2,3,4,5-tetrahydropyridazinyl)pyrazolo[4,3-b]benzoxazines. The claimed compounds are inhibitors of phosphodiesterase fraction III and have potent positive inotropic activity. These compounds are useful as cardiotonics or platelet aggregation inhibitors. This invention also pertains to compositions comprising an effective amount of the compounds, to methods for preparing the claimed compounds and to methods for treating a mammal with the compounds.