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:
Sep. 14, 1993
Filed:
Jun. 17, 1991
Takao Takiguchi, Tokyo, JP;
Takashi Iwaki, Machida, JP;
Takeshi Togano, Yokohama, JP;
Yoko Yamada, Atsugi, JP;
Shinichi Nakamura, Atsugi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A mesomorphic compound represented by the following formula [I]: ##STR1## wherein R.sub.1 and R.sub.2 independently denote an alkyl group having 1-16 carbon atoms capable of having a substituent; X.sub.1, X.sub.2, X.sub.3 and X.sub.4 independently denote a single bond ##STR2## A.sub.1, A.sub.2 and A.sub.3 independently denote ##STR3## X.sub.5 and X.sub.6 independently denote hydrogen atom, fluorine, chlorine, bromine, CH.sub.3, CN or CF.sub.3 ; n.sub.1 and n.sub.2 are 0 or 1, with provisos that (1) X.sub.2 cannot be a single bond when n.sub.1 is 0, (2) X.sub.3 cannot be a single bond when N.sub.2 is 1 and (3) at least one of X.sub.2 and X.sub.3 denotes ##STR4## when both n.sub.1 and n.sub.2 is O and A.sub.2 denote ##STR5##