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:
Dec. 14, 1982
Filed:
Nov. 15, 1979
Applicant:
Inventors:
Kiyoshi Kuriyama, Takatsuki, JP;
Jun Nakano, Moriyama, JP;
Kiyonosin Itikawa, Otsu, JP;
Kiyoshi Ito, Otsu, JP;
Yuji Suzuki, Otsu, JP;
Katsuro Ishizuki, Otsu, JP;
Assignee:
Kakenyaku Kako Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ;
U.S. Cl.
CPC ...
424269 ; 548253 ;
Abstract
Coumarin derivatives of the general formula: ##STR1## wherein R is hydrogen atom, an alkyl group or an alkenyl group, R.sup.1 is hydrogen atom, an alkyl group, an alkenyl group or an alkoxy group, and the OR and R.sup.1 groups each are substituted at any of the 5, 6, 7 and 8 positions of the coumarin ring, and the salt thereof. The compounds are useful as antiallergic agent for preventing and treating allergic diseases.