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. 24, 1991
Filed:
Jan. 31, 1990
Applicant:
Inventors:
Hideo Katoh, Kanagawa, JP;
Hisashi Hamano, Sagamihara, JP;
Masahiro Hosoi, Tokyo, JP;
Tatsuya Ogawa, Sagamihara, JP;
Assignee:
Teijin Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428141 ; 428480 ; 428694 ; 428900 ;
Abstract
A biaxially oriented film of polyethylene-2,6-naphthalate having a Young's modulus of at least 650 kg/mm.sup.2 in a given direction on the film plane and a direction crossing it at right angles, the difference between the Young's moduli in the two directions being at most 200 kg/mm.sup.2, the difference between the thermal shrinkages in the two directions being 0 to 0.1%.