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. 16, 1997
Filed:
Dec. 07, 1995
Applicant:
Inventors:
Michinori Nishikawa, Yokkaichi, JP;
Shigeo Kawamura, Yokkaichi, JP;
Yasuo Matsuki, Yokkaichi, JP;
Kyouyu Yasuda, Tsu, JP;
Tsuyoshi Miyamoto, Yokkaichi, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; C08G / ;
U.S. Cl.
CPC ...
2522994 ; 25229901 ; 5283291 ; 528353 ;
Abstract
A liquid crystal-aligning agent comprising at least one of a polyamic acid obtained by reacting (A) a tetracarboxylic acid dianhydride consisting of 70 to 98 mole % of a dianhydride of a tetracarboxylic acid such as ##STR1## or the like, and 2 to 30 mole % of a dianhydride of a cyclobutanetetracarboxylic acid, and (B) a diamine compound, and a polymer obtained by imidizing the polyamic acid.