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:
Nov. 24, 1992
Filed:
Jan. 23, 1991
Applicant:
Inventors:
Hans-Rolf Dubal, Konigstein/Taunus, DE;
Mikio Murakami, Kakegawa, JP;
Hans-Otto Drotloff, Frankfurt am Main, DE;
Michael Brekner, Frankfurt am Main, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528125 ; 528126 ; 528128 ; 528220 ; 528298 ; 528299 ; 428-1 ;
Abstract
Use of polyaryl ether ketones comprising structural units --O--A--O--B-- gives alignment layers for liquid-crystal display and switching devices which have high transparency, low water absorption capacity and particularly uniform alignment both of smectic and of nematic liquid crystals, and thus produce a high contrast capability.
Quick Actions:
Dubal, Hans-Rolf. (1992). Use of polyaryl ether ketones as alignment layers (U.S. Patent No. 5166304). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5166304
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile