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. 18, 1984
Filed:
Jun. 27, 1983
Applicant:
Inventors:
Haruyoshi Takatsu, Kodaira, JP;
Hisato Sato, Tokyo, JP;
Assignee:
Dainippon Ink and Chemicals, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C09K / ; G02F / ;
U.S. Cl.
CPC ...
560-1 ; 2522996 ; 25229963 ; 25229964 ; 25229965 ; 3503 / ; 3503 / ; 560 61 ; 560 72 ; 560 73 ; 560105 ; 560107 ; 560108 ;
Abstract
A nematic liquid crytalline compound selected from the group consisting of compounds represented by the general formula ##STR1## compounds represented by the general formula ##STR2## compounds represented by the general formula ##STR3## and compounds represented by the general formula ##STR4## wherein R and R', independently from each other, represent a linear alkyl group having 1 to 7 carbon atoms, and each cyclohexane ring is arranged in a trans(equatorial-equatorial) form. These compounds have higher nematic phaseisotropic liquid phase transition temperatures than conventional liquid crystalline compounds.