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:
Jan. 03, 1984
Filed:
Sep. 23, 1982
Applicant:
Inventor:
Ying-Yen Hsu, Los Altos, CA (US);
Assignee:
Timex Corporation, Waterbury, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ; C09K / ; C07D / ;
U.S. Cl.
CPC ...
549373 ; 25229961 ; 25229963 ; 25229965 ; 2604 / ; 2604 / ; 2604 / ; 549374 ; 549375 ;
Abstract
Disclosed are compounds of the formula: ##STR1## wherein R is an alkyl group having 1 to 8 carbon atoms and X is a dioxane, cyclohexane, or benzene ring. The compounds of the invention are suitable as liquid crystal materials in electrooptical displays. Specifically, when added to nematic liquid crystals, these compounds provide an increase in the positive dielectric anisotropy of the liquid crystal composition.