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, 1997
Filed:
Nov. 23, 1994
Applicant:
Inventors:
Takayuki Higashii, Kishiwada, JP;
Isao Kurimoto, Toyonaka, JP;
Shoji Toda, Takarazuka, JP;
Masayoshi Minai, Moriyama, JP;
Takeshi Tani, Tsukuba, JP;
Chizu Kawakami, Tsukuba, JP;
Koichi Fujisawa, Tsukuba, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
25229966 ; 2529965 ; 568660 ; 568661 ; 568662 ; 560179 ; 560184 ; 560186 ; 560187 ; 560188 ; 560227 ; 560228 ; 560254 ; 560255 ;
Abstract
An optically active phenol useful in the preparation of liquid crystalline compounds which is represented by the formula (V): ##STR1## wherein R.sub.2 represents an alkyl or alkoxyalkyl group having 1 to 20 carbon atoms optionally substituted by halogen atoms; Z' represents ##STR2## wherein q represents a number of 1 to 5 and * indicates asymmetric carbon atom; l represents a number of 2; t represents a number of 1 to 5; s represents a number of 0 or 1.