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. 11, 1980
Filed:
Sep. 29, 1978
Applicant:
Inventors:
Sten H Bergstrand, Bjarred, SE;
Per G Kjellin, Lund, SE;
Carl G Persson, Loberod, SE;
Lars M Sorenby, Lund, SE;
Assignee:
Aktiebolaget Draco, Lund, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
424253 ; 544273 ; 544266 ; 544267 ;
Abstract
Compounds of the formula ##STR1## or physiologically acceptable salts thereof in which formula R.sup.1 is methyl, ethyl or n-propyl, R.sup.2 is methyl or n-propyl and R.sup.3 is ##STR2## methods for the preparation thereof; intermediates useful for their preparation; pharmaceutical preparations containing at least one of these compounds; and the use thereof in the treatment of allergy and bronchial asthma.