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. 13, 1995
Filed:
Jun. 30, 1992
Applicant:
Inventors:
Assignee:
Showa Shell Sekiyu K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C07C / ;
U.S. Cl.
CPC ...
252299650 ; 560102 ; 25229966 ;
Abstract
A composition of (R)-isomer and (S)-isomer of a liquid crystal compound represented by the formula; ##STR1## wherein X represents --O-- or a direct bond, Z represents a halogen-substituted alkyl group selected from a group consisting of --CF.sub.3, --CHF.sub.2, --CH.sub.2 F, --C.sub.2 F.sub.5, --CClF.sub.2, -CCl.sub.2 F, --CCl.sub.2 CF.sub.3, and --C.sub.3 F.sub.7, m represents an integer of from 1 to 20, n represents an integer of from 1 to 20, and * represents an asymmetric carbon, and the optical purity of said composition is high enough to exhibit optically tristable states in S*(3) phase when electric voltage is applied.