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:
Dec. 23, 2008
Filed:
Mar. 23, 2007
Applicant:
Michael Wand, Boulder, CO (US);
Inventor:
Michael Wand, Boulder, CO (US);
Assignee:
Dai Nippon Printing Co. Ltd., Tokyo-to, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 19/34 (2006.01); C07D 403/10 (2006.01); C07D 333/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A liquid crystal compound represented by the following formula is provided to enhance the contrast of a liquid crystal device using ferroeloctric liquid crystal: Ris an alkyl group having 4 to 6 carbon atoms. Ris an alkyl group having 6 to 18 carbon atoms or an alkoxy group having 6 to 18 carbon atoms. Xand Xare each independently hydrogen ox fluorine.