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. 11, 1994
Filed:
Feb. 10, 1993
Applicant:
Inventors:
Shinichi Nakamura, Hadano, JP;
Takao Takiguchi, Tokyo, JP;
Kenji Shinjo, Atsugi, JP;
Takashi Iwaki, Machida, JP;
Takeshi Togano, Yokohama, JP;
Yoko Yamada, Isehara, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; C07C / ; G02F / ;
U.S. Cl.
CPC ...
25229962 ; 25229901 ; 25229961 ; 25229963 ; 25229964 ; 25229965 ; 25229966 ; 25229967 ; 585 26 ; 359103 ;
Abstract
A mesomorphic compound of the formula (I) according to Claim 1 and an optically active compound of the formula (II) according to Claim 2 are suitable as a component for a liquid crystal composition providing improved response characteristics and having an improved helical pitch at a cholesteric phase or a chiral smectic C phase. The above liquid crystal composition is useful as an element of a liquid crystal device providing a good display characteristics including a gradation display.