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:
Sep. 30, 1980
Filed:
Jan. 08, 1979
Applicant:
Inventors:
Frederick G Yamagishi, Newbury Park, CA (US);
Leroy J Miller, Canoga Park, CA (US);
John E Jensen, El Segundo, CA (US);
J David Margerum, Woodland Hills, CA (US);
Assignee:
Hughes Aircraft Company, Culver City, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C09K / ;
U.S. Cl.
CPC ...
252299 ; 2604 / ; 3503 / ;
Abstract
A number of alkyl and alkoxy-substituted ortho-cyanophenyl biphenylcarboxylate esters have been prepared for use as components for nematic liquid crystal mixtures which can be used in homeotropically aligned, field effect display devices or in dynamic scattering displays. These materials have large negative dielectric anisotropies and high birefringence.