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:
Jun. 15, 1999
Filed:
Jun. 30, 1997
Applicant:
Inventors:
Assignee:
Unitika Ltd., Hyogo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29D / ; B32B / ; B32B / ; C08F / ;
U.S. Cl.
CPC ...
428 352 ; 428 357 ; 428212 ; 428480 ; 428910 ; 525444 ;
Abstract
A biaxial oriented polyester film which is obtained by using as a main raw material a mixture comprising a thermoplastic polyester resin (i) wherein an acid component is mainly composed of a terephthalic or naphthalenedicarboxylic acid component and a thermoplastic polyester resin (ii) having substantially a phase-separated form to the resin (i), and orienting an unoriented sheet of the mixture wherein an illuminance anisotropic ratio (IAR) of transmitted scattering light satisfies the following condition of 0.1.ltoreq.IAR.ltoreq.1.0.