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:
Feb. 21, 1995
Filed:
Nov. 17, 1993
Michael Junge, Pfungstadt, DE;
Herbert Plach, Darmstadt, DE;
Alasdair Jelfs, Darmstadt, DE;
Michael Kompter, Riedstadt, DE;
Merck Patent Gesellschaft mit Beschrankter Haftung, Darmstadt, DE;
Abstract
A liquid-crystalline mixture comprising two or more compounds of the general formula I, ##STR1## in which R.sup.1 is straight-chain alkyl having 3, 5 or 7 carbon atoms, three or more compounds of the general formula II, ##STR2## in which R.sup.2 is straight-chain alkyl having 2 to 7 carbon atoms, three or more compounds of the general formula III, ##STR3## in which R.sup.3 and R.sup.4 are each independently alkyl or alkoxy with 1 to 10 carbon atoms, and two or more compounds of the general formula IV, ##STR4## in which R.sup.5 and R.sup.6 are each independently have one of the meanings indicated for R.sup.3 and m is 0 or 1. A 'multibottle-system' comprising said mixture and an electrooptical display device based on the principle of the twisted nematic cell.