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:
Dec. 05, 1995
Filed:
Jul. 20, 1994
Applicant:
Inventors:
Tadashi Ono, Yokohama, JP;
Kinji Hasegawa, Hachioji, JP;
Takeo Asai, Sagamihara, JP;
Yoji Murakami, Sagamihara, JP;
Assignee:
Teijin Limited, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ; C08J / ; C08K / ; C08L / ;
U.S. Cl.
CPC ...
524425 ; 524493 ; 524497 ; 524604 ; 524605 ; 2642902 ;
Abstract
A biaxially oriented polyester film comprising a copolyester which contains a lubricant having an average particle diameter of no greater than 2.5 .mu.m and has a melting point of from 210.degree. to 245.degree. C., the film having a plane orientation coefficient of from 0.10 to 0.16, a thermal shrinkage at 150.degree. C. of no higher than 10%, and a density of lower than 1.385 g/cm.sup.3, and optionally a refractive index in a direction of thickness of from 1.495 to 1.530 as well as a film plane refractive index of from 1.61 to 1.66 in all directions.