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:
Jul. 27, 1999
Filed:
May. 20, 1997
Applicant:
Inventors:
Assignee:
Elsicon, Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; G02F / ;
U.S. Cl.
CPC ...
528353 ; 528125 ; 528128 ; 528170 ; 528171 ; 528172 ; 528173 ; 528174 ; 528179 ; 528183 ; 528185 ; 528188 ; 528220 ; 528229 ; 528350 ; 359 44 ; 359 90 ; 350341 ; 350345 ; 350346 ; 350349 ; 3503 / ; 3503 / ; 350351 ;
Abstract
The present invention relates to amine compositions and the preparation of polyimides. The polyimides can be used for inducing alignment of a liquid crystal medium with polarized light and liquid crystal display elements.