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:
Jul. 16, 1991
Filed:
Jul. 01, 1988
Applicant:
Inventors:
Waclaw J Rzeszotarski, Millersville, MD (US);
Ronald H Erickson, Baltimore, MD (US);
Assignee:
Marion Merrell Dow Inc., Kansas City, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ;
U.S. Cl.
CPC ...
514263 ; 544267 ; 544273 ;
Abstract
1,3-Alkyl substituted-8-phenylxanthines in which the straight chain alkyl substituents are different and pharmaceutically acceptable salts of such compounds are disclosed. Preferred compounds have 1-n-propyl-3-methyl and 1-methyl-3-n-propyl substituents. The compounds are potent bronchodilators.