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. 03, 1981
Filed:
May. 30, 1979
Applicant:
Inventors:
Yasuhiro Morinaka, Ami, JP;
Kazuo Takahashi, Ibaragi, JP;
Assignee:
Mitsubishi Yuka Pharmaceutical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; A61K / ;
U.S. Cl.
CPC ...
424256 ; 546 92 ;
Abstract
Novel ester derivatives of quinolopyran-4-one-2-carboxylic acids and the tautomers thereof are provided, the ester groups being specified and restricted. These novel compounds are especially useful as antiallergic antasthmatics or remedies for asthma, and can be administered orally with long duration of action.