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. 17, 1976
Filed:
Oct. 22, 1974
Applicant:
Inventor:
Masahiko Sagane, Hiratsuka, JA;
Assignee:
Kansai Paint Company, Ltd., Amagasaki, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; G02F / ;
U.S. Cl.
CPC ...
252299 ; 2323 / ; 252408 ; 3501 / ;
Abstract
A liquid crystal composition for indicating the occurence of an electric field which has a long effective life, assumes a clear color change and comprises from about 10 to about 60 % by weight of a cholesteryl carbamate having, as the substituent group at the nitrogen atom of the carbamate, an aliphatic hydrocarbon group, a monocyclic aromatic hydrocarbon group or a substituted hydrocarbon group, and from about 40 to about 90 % by weight of a liquid crystal component compatible with the carbamate comprising cholesteric liquid crystal substances other than the cholesteryl carbamate.