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. 16, 1993
Filed:
Nov. 12, 1991
Applicant:
Inventors:
Hiroyuki Yoshimura, Ibaraki, JP;
Shinya Abe, Ibaraki, JP;
Tetsuya Kawahara, Ibaraki, JP;
Takashi Inoue, Ibaraki, JP;
Hiroshi Shirota, Evanston, IL (US);
Kenichi Chiba, Ibaraki, JP;
Kenichi Kusube, Ibaraki, JP;
Toru Horie, Ibaraki, JP;
Takeshi Suzuki, Ibaraki, JP;
Isao Yamatsu, Ibaraki, JP;
Naoyuki Shimomura, Ibaraki, JP;
Kazuo Okano, Ibaraki, JP;
Richard S Clark, Ibaraki, JP;
Takashi Mori, Ibaraki, JP;
Shuhei Miyazawa, Ibaraki, JP;
Ryoichi Hashida, Ibaraki, JP;
Kenzo Muramoto, Ibaraki, JP;
Koukichi Harada, Ibaraki, JP;
Assignee:
Eisai Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
562466 ; 560 56 ; 560 53 ; 562461 ;
Abstract
Compounds of the formula: ##STR1## where R.sup.1 is a hydrogen atom or a lower alkyl group;