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:
Nov. 13, 1984
Filed:
Sep. 30, 1982
Applicant:
Inventors:
Assignee:
Alps Electric Co., Ltd., , JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ; C09K / ;
U.S. Cl.
CPC ...
2522991 ; 2522992 ; 2522994 ; 350349 ;
Abstract
A liquid crystal mixture comprising a nematic liquid crystal having negative dielectric anisotropy, an optically active substance such as cholesteric or chiralnematic liquid crystal, a dichroic dye and an ionic substance characterized by use of a hexadecylpyridinium salt having the following structural formula as the ionic substance ##STR1## where X is a halogen atom.