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. 25, 1990
Filed:
Apr. 21, 1989
Applicant:
Inventors:
Helmut Ringsdorf, Mainz-Gonsenheim, DE;
Willi Kreuder, Mainz, DE;
Peter Neumann, Wiesloch, DE;
Karl-Heinz Etzbach, Frankenthal, DE;
Hans-Josef Sterzel, Dannstadt-Schauernheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C08G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
25229901 ; 25229966 ; 528271 ; 528272 ; 528288 ; 528293 ; 528295 ; 428-1 ;
Abstract
Polymers contain, as mesogenic groups, groups which produce a discotic phase, and furthermore can control pleochroic dyes. The novel polymers possess novel properties, and combination of properties, which the conventional polymers which form liquid-crystalline phases do not possess. The polymers can be used in electro-optical displays, in storage elements, as electrically or photo-electrically conductive polymers and as strain sensors.