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:
Sep. 23, 1997
Filed:
Aug. 08, 1995
Applicant:
Inventors:
Brian Carl Auman, Newark, DE (US);
Edgar Bohm, Griesheim, DE;
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528353 ; 528125 ; 528128 ; 528170 ; 528172 ; 528173 ; 528176 ; 528183 ; 528188 ; 528220 ; 528229 ; 528350 ; 428-1 ; 4284735 ; 359 36 ;
Abstract
A polyimide alignment film based on pyromellitic dianhydride and a 2,2'-bis(perfluoroalkoxy)benzidine, as major components, for use in liquid crystal display devices.
Auman, Brian. (1997). Polyimide films from pyromellitic dianhydride and (U.S. Patent No. 5670609). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5670609
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile