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:
Jun. 26, 1984
Filed:
Oct. 16, 1981
Applicant:
Inventors:
Akio Sato, Ibaragi, JP;
Kenji Nakajima, Ibaragi, JP;
Yoshimasa Takahara, Narashino, JP;
Shizumasa Kijima, Niiza, JP;
Isao Yamatsu, Kawaguchi, JP;
Kouichi Suzuki, Kakamigahara, JP;
Takeshi Suzuki, Abiko, JP;
Toshihiko Nakamura, Tokyo, JP;
Assignees:
Eisai Co., Ltd., Tokyo, JP;
General Director of the Agency of Industrial Science and Technology, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C11C / ;
U.S. Cl.
CPC ...
260413 ; 568412 ; 568415 ; 568417 ; 424312 ; 424331 ;
Abstract
This invention relates to novel polyprenyl ketone derivatives having the eral formula: ##STR1## in which n is an integer of 1-5, and R represents a hydroxymethyl, formyl or carboxyl group, and a process for the preparation of the same.