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. 04, 1998
Filed:
Jun. 17, 1997
Applicant:
Inventors:
Akiyoshi Uchiyama, Tokyo, JP;
Kenzo Muramoto, Ibaraki, JP;
Kenichi Chiba, Ibaraki, JP;
Takashi Yamanaka, Ibaraki, JP;
Isao Yamatsu, Ibaraki, JP;
Assignee:
Eisai Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
514568 ;
Abstract
To provide a treating or ameliorating agent for joint diseases accompanied with arthritis, preferably, a rheumatoid arthritis or ameliorating agent, which exerts excellent pharmaceutical effects. The active ingredient is a quinone derivative represented by the following general formula (I) or pharmacologically acceptable salts thereof: ##STR1## wherein n is 0 or an integer of 1 to 12 and R is a methyl or methoxy group.