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. 17, 1990
Filed:
Dec. 16, 1988
Applicant:
Inventors:
Assignee:
Mitsui Petrochemical Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; B32B / ;
U.S. Cl.
CPC ...
428332 ; 428480 ; 528190 ; 528193 ; 528194 ;
Abstract
Disclosed herein are (1) a film of a liquid crystalline wholly aromatic polyester which is non-oriented and transparent, which film can be prepared by dissolving a liquid crystalline wholly aromatic polyester in a solvent, casting the resulting solution to form a film and volatirizing the solvent from the film as cast and (2) a film of a liquid crystalline wholly aromatic polyester which is oriented and polarizing, which film can be prepared by orienting the above-mentioned non-oriented film by drawing or heating.