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. 25, 1988
Filed:
Nov. 20, 1986
Applicant:
Inventors:
Mitsuru Kano, Furukawa, JP;
Yoshinori Kato, Furukawa, JP;
Yoshimi Kamijo, Furukawa, JP;
Yoshinari Sakikubo, Hyogo, JP;
Yoshio Takeda, Himeji, JP;
Takanori Sato, Hyogen, JP;
Assignee:
Alps Electric Co., Ltd., , JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C09B / ; C09B / ; C09K / ;
U.S. Cl.
CPC ...
534577 ; 534752 ; 2522991 ; 2522995 ; 25229961 ; 25229962 ; 350349 ; 546 29 ;
Abstract
A dichroic dye for coloring liquid crystal compositions are disclosed which is represented by the following general formula: ##STR1## in which Dye 1 and Dye 2 each represents a group of atoms necessary to form a linear dye structure containing an azo, azomethine or ester group; X represents a halogen atom; and n represents an integer of from 1 to 10. The dye is suited for use in color liquid crystal display devices, e.g., of guest-host type.