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. 30, 1987
Filed:
Dec. 02, 1985
Applicant:
Inventors:
Shigeo Yasui, Okayama, JP;
Masashi Ono, Okayama, JP;
Seiko Kobayashi, Okayama, JP;
Shigeo Senzai, Kurashiki, JP;
Tatsuo Uchida, Sendai, JP;
Assignee:
Kabushiki Kaisha Nippon Kanko Shikiso Kenkyusho, Okayama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; G02F / ;
U.S. Cl.
CPC ...
2522991 ; 534577 ; 534829 ; 534832 ; 350349 ;
Abstract
New dichroic dyestuffs for the guest-host type liquid crystal and new liquid crystal compositions containing said dyestuff having an excellent improved dichroism and being prepared by introducing at least one group selected from the group consisting of phenyl, cyclohexyl, phenylcarbonyloxy and phenyloxycarbonyl group into a phenyl, a cyclohexyl or a naphthyl group at its 4-position, which is arranged at the end of a known dichroic dyestuff molecule along the major axis of the molecule.