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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.:

US 5989758 B1

PDFFull Text
Date of Patent:
Nov. 23, 1999

Filed:

Sep. 30, 1998

Liquid crystalline polyesters, their composition, and their uses

Applicant:
Inventors:

Shinichi Komatsu, Kawasaki, JP;

Suzushi Nishimura, Yokohama, JP;

Akira Takagi, Kawasaki, JP;

Shinichiro Suzuki, Yokohama, JP;

Assignee:

Nippon Oil Company, Limited, Tokyo, JP;

Attorney:

Scully, Scott, Murphy & Presser

Primary Examiner:

Samuel A Acquah

Int. Cl.
CPC ...
C08K / ; C08G / ; C08F / ;
U.S. Cl.
CPC ...
430 20 ; 528176 ; 528190 ; 528191 ; 528192 ; 528193 ; 528194 ; 528272 ; 528298 ; 528302 ; 528306 ; 528308 ; 525437 ; 525444 ; 430627 ; 430631 ; 428-1 ; 428 641 ; 428357 ;
Abstract

There are provided liquid crystalline polyesters comprising 4'-hydroxy-4-stilbenecarboxylic acid type units, dicarboxylic acid units acting as a mesogen such as 4,4'-stilbenecarboxylic acid and catechol units as essential ingredients, and a liquid crystalline polyester composition comprising said polyesters and optically active liquid crystalline polyesters consisting essentially of 4,4'-stilbenedicarboxylic acid type units and aliphatic diol units having asymmetric carbons.

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Komatsu, Shinichi. (1999). Liquid crystalline polyesters, their composition, and their uses (U.S. Patent No. 5989758). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5989758

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