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:
Aug. 05, 1980
Filed:
Jul. 11, 1978
Applicant:
Inventors:
Georges Haas, Binningen, CH;
Alberto Rossi, Oberwil, CH;
Knut A Jaeggi, Basel, CH;
Alex Sele, Muttenz, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; A61K / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
2603452 ; 2603403 ; 2603 / ; 424283 ; 424278 ;
Abstract
The present invention relates to novel benzopyrane derivatives, especially 3-oxaloamino-4-oxo-4H-1-benzopyrane derivatives of the formula I ##STR1## in which Ph is substituted or unsubstituted 1,2-phenylene, R is free, esterified or amidated carboxyl and R.sub.1 is hydrogen or a substituted or substituted hydrocarbon radical, in the free form or in the form of a salt, exhibit antiallergic activities and are accordingly useful as active ingredients of antiallergic pharmaceutical preparations.