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:
Aug. 19, 1986
Filed:
Jun. 04, 1984
Applicant:
Inventors:
Mitsuru Kano, Furukawa, JP;
Yoshinori Kato, Furukawa, JP;
Yoshimi Kamijo, Furukawa, JP;
Yoshio Takeda, Himeji, JP;
Yoshinari Sakikubo, Hyogo, JP;
Naoki Yagi, Himeji, JP;
Assignees:
Alps Electric Co., Ltd., both of, JP;
Sanyo Color Works Ltd., both of, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; G02F / ;
U.S. Cl.
CPC ...
534577 ; 534567 ; 534657 ; 534658 ; 546 37 ; 2522991 ; 350349 ;
Abstract
A dichromatic coloring matter for a colored liquid crystal display element comprising a compound of the general formula: ##STR1## where A and B each stand for ##STR2## where n is 0, 1, 2, 3 or 4, and X and Y each stand for ##STR3## where R.sub.1 and R.sub.2 stand for an alkyl group or hydrogen, --R (alkyl group) or --OR (alkoxy group).