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:
Jan. 14, 1992
Filed:
Jun. 26, 1990
Applicant:
Inventors:
Tsuyoshi Tomiyama, Sakaki, JP;
Akira Tomiyama, Sakaki, JP;
Masayuki Yokota, Sakaki, JP;
Shuuichi Wakabayashi, Koushoku, JP;
Hiromi Hayashi, Sakaki, JP;
Rei Koyama, Kitamimaki, JP;
Masafumi Yasunami, Sendai, JP;
Assignee:
Kotobuki Seiyaku Co., Ltd., Sakaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C07C / ;
U.S. Cl.
CPC ...
514577 ; 562100 ;
Abstract
A series of new azulene analogues are disclosed, which are represented by the following formula: ##STR1## wherein: R.sub.1 is --COOH, --COOR.sub.4 (R.sub.4 represents a lower alkyl), --CH.dbd.CH--COOH, --CH.sub.2 --COOH or --SO.sub.3 H;