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:
Oct. 05, 1993
Filed:
Jun. 04, 1991
Applicant:
Inventors:
Yasuyuki Goto, Chiba, JP;
Kisei Kitano, Chiba, JP;
Assignee:
Chisso Corporation, Ohsaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C07C / ;
U.S. Cl.
CPC ...
2522996 ; 585 25 ;
Abstract
A tolan derivative useful as a component of liquid crystal materials and being superior to conventional tolan derivatives in the characteristics of .DELTA.n and viscosity, and a liquid crystal composition containing the same are provided, which tolan derivative is expressed by the formula ##STR1## wherein R.sup.1 and R.sup.2 each represent an alkyl group of 1 to 10 carbon atoms.