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. 19, 1992
Filed:
Sep. 13, 1989
Applicant:
Inventors:
Kazuo Yoshinaga, Machida, JP;
Kazuharu Katagiri, Tama, JP;
Akira Tsuboyama, Tokyo, JP;
Hiroyuki Kitayama, Tokyo, JP;
Kenji Shinjo, Yokohama, JP;
Chieko Hioki, Hiratsuka, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; C07D / ; C07C / ;
U.S. Cl.
CPC ...
25229961 ; 25219901 ; 25219967 ; 544298 ; 544335 ; 560 61 ; 560 62 ; 560 65 ; 560 66 ; 560 67 ; 560 75 ; 560 86 ; 560103 ;
Abstract
An optically active lactic acid derivative represented by the following formula (I): ##STR1## wherein R represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 1 to 18 carbon atoms; C* represents an asymmetric carbon atom; l is 0 or 1; m is 1 or 2; A represents a group selected from the following groups (a) and (b):