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:
Mar. 27, 1984
Filed:
Jan. 22, 1982
Applicant:
Inventors:
Assignee:
Hoffmann-La Roche Inc., Nutley, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
G02F / ; C09K / ;
U.S. Cl.
CPC ...
3503 / ; 2522995 ; 2522996 ; 25229961 ; 25229962 ; 25229963 ; 560-8 ; 560138 ; 568329 ; 568631 ; 585 20 ; 585 25 ;
Abstract
Disubstituted ethanes of the formula ##STR1## wherein R.sup.2 is --R.sup.3, --OR.sup.3, --CO--R.sup.3, --CO--OR.sup.3 or O--CO--R.sup.3, R.sup.1 and R.sup.3 each are straight-chain alkyl of 1 to 12 carbon atoms and n is 1 or 2, are described. Liquid crystalline mixtures comprising Compound I as well as their use in electro-optical devices also are disclosed.