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:
Feb. 07, 1984
Filed:
Aug. 31, 1981
Applicant:
Inventors:
Jean Billard, Paris, FR;
Jean-Claude Dubois, Paris, FR;
Michel Hareng, Paris, FR;
Serge Le Berre, Paris, FR;
Jean-Noel Perbet, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; G02F / ; G02F / ; G09F / ;
U.S. Cl.
CPC ...
340784 ; 25229901 ; 2522996 ; 25229962 ; 340713 ; 340794 ; 350330 ; 3503 / ; 350351 ; 3503 / ; 358 60 ; 358 61 ; 358230 ;
Abstract
A process wherein certain disc-like liquid crystals, which locally undergo heating and then rapid cooling on either side of the transition temperature between two mesophases permit the liquid crystal to become diffuse with an adequate contrast to be used for display purposes. The following liquid crystals can be utilized, i.e. triphenylene derivatives of formulas: ##STR1##