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:
Jan. 05, 1999
Filed:
Nov. 20, 1997
Applicant:
Inventors:
Brian Carl Auman, Newark, DE (US);
Edgar Bohm, Griesheim, DE;
Assignees:
E. I. duPont de Nemours and Company, Wilmington, DE (US);
Merck Patent GmbH, Darmstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; G02F / ; G02F / ; C09K / ;
U.S. Cl.
CPC ...
528353 ; 349123 ; 349126 ; 349127 ; 349132 ; 349133 ; 349134 ; 349135 ; 359 36 ; 359900 ; 428-1 ; 4284735 ;
Abstract
A polyimide alignment film based on pyromellitic dianhydride and a bis(4-aminophenoxy) aromatic compound, such as 1,3-bis(4-aminophenoxy)benzene or 1,4-bis(4-aminophenoxy)benzene, providing low tilt angles of from 1 to 2 degrees when used in liquid crystal displays.
Auman, Brian. (1999). Polyimide film from pyromellitic dianhydride and a bis (4-aminophenoxy) (U.S. Patent No. 5856432). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5856432
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile