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:
Oct. 22, 1991
Filed:
Oct. 18, 1990
Applicant:
Inventors:
Kazutoshi Miyazawa, Kanagawa, JP;
Makoto Ushioda, Kanagawa, JP;
Shinichi Saito, Kanagawa, JP;
Hiromichi Inoue, Kanagawa, JP;
Kouji Ohno, Kanagawa, JP;
Assignee:
Chisso Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
25229961 ; 25229901 ; 2522996 ; 544298 ;
Abstract
An optically active compound having a large spontaneous polarization value and capable of affording a composition exhibiting a suitable ferroelectric liquid crystal temperature range and a liquid crystal composition containing the same are provided, which compound is expressed by the formula ##STR1## wherein either one of R.sup.1 and R.sup.2 represents an alkyl group or an alkoxy group each of 1 to 20 carbon atoms and another thereof represents an optically active group.