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:
Jan. 14, 1992
Filed:
Aug. 24, 1990
Applicant:
Inventors:
Kazutoshi Miyazawa, Kanagawa, JP;
Shinichi Saito, Kanagawa, JP;
Kouji Ohno, Kanagawa, JP;
Hiromichi Inoue, Kanagawa, JP;
Makoto Ushioda, Kanagawa, JP;
Assignee:
Chisso Corporation, Ohsaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
25229966 ; 2522996 ; 25229901 ; 560187 ; 568609 ; 568610 ;
Abstract
An optically active compound particularly useful as a component of liquid crystal compositions having a high response rate and a chiral liquid crystal composition containing the same are provided, which optically active compound is expressed by the formula (I) ##STR1## wherein R.sup.1 represents alkyl or alkoxy each of 1-20 C, H, halogen or CN; ##STR2## and ##STR3## each represent a specified six-membered ring; R.sup.2 represents alkyl of 1-20 C; the asterisk designates an asymmetric carbon atom; and m and n each represents 0 or 1.