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:
May. 23, 1989
Filed:
Apr. 23, 1986
Applicant:
Inventors:
Hironori Ikuta, Ibaraki, JP;
Youji Yamagishi, Ibaraki, JP;
Kozo Akasaka, Ibaraki, JP;
Isao Yamatsu, Ibaraki, JP;
Seiichi Kobayashi, Ibaraki, JP;
Hiroshi Shirota, Ibaraki, JP;
Kouichi Katayama, Ibaraki, JP;
Assignee:
Eisai Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
514424 ; 514425 ; 548542 ; 548543 ;
Abstract
3-(3,5-di-tert-butyl-4-hydroxy-benzylidene)-2-pyrrolidone and N-substituted derivatives thereof are described. The substituent includes alkyl, alkoxy, alkynyl phenyl-alkylene, hydroxy-alkylene and amino-alkylene. They are effective as an anti-inflammatory, analgesic and antithermic agent, and they have a low toxicity.
Ikuta, Hironori. (1989). 3-(3,5-di-tert-butyl-4-hydroxy benzylidene)-2-pyrrolidone and (U.S. Patent No. 4833160). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4833160
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile