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. 06, 1979
Filed:
Jun. 06, 1978
Applicant:
Inventors:
Assignee:
Thomson-CSF, Paris, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C02F / ; C07C / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
252299 ; 252408 ; 2604 / ; 350346 ; 350350 ; 560 21 ; 560 23 ; 560 65 ;
Abstract
A liquid crystal composition with high negative dielectric anisotropy, which is capable of exhibiting a high dynamic light scattering effect and of inducing similar characteristics into mixtures of the liquid crystal and another nematic liquid crystal and which derives an advantage from a larger mesomorphic temperature range, which comprises at least one compound of the formula: ##STR1## wherein R represents NO.sub.2, bromine or cyano; R.sub.1 is an alkyl or alkoxy group and R.sub.2 is an alkyl group.