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. 02, 1986
Filed:
Oct. 10, 1984
Applicant:
Inventors:
Dietrich Demus, Halle, DD;
Roger Frach, Halle, DD;
Hans-Joachim Deutscher, Halle, DD;
Horst Zaschke, Halle, DD;
Assignee:
VEB Werk fuer Fernsehelektronik, Berlin-Oberschoeneweide, DD;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; G02F / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
25229963 ; 2522995 ; 3503 / ; 3503 / ; 428-1 ; 562491 ; 562500 ; 560 57 ; 560 72 ; 560101 ; 560116 ; 560118 ; 558416 ;
Abstract
New liquid-crystalline esters of the 4-[(4-alkyl-cyclohexyl)-methyl]-benzoic acids or cyclohexanecarboxylic acids which are suitable for electro-optical displays have the general formula ##STR1## wherein R.sup.1 =C.sub.n H.sub.2n+1