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. 07, 2003
Filed:
Jul. 11, 2000
Mitsuo Tojo, Sagamihara, JP;
Toshifumi Osawa, Sagamihara, JP;
Teijin Limited, Osaka, JP;
Abstract
A biaxially oriented polyester film for magnetic recording media which has (1) a Young's modulus in a machine direction of 5.0 GPa or less and a Young's modulus in a direction perpendicular to the machine direction of 8.0 GPa or more, (2) a surface roughness on one side of 0.3 to 1.5 nm when measured for a measurement area of 246.6×187.5 &mgr;m and 0.1 to 3.0 nm when measured for a measurement area of 2.5×1.9 mm and a surface roughness on the other side of 0.6 to 2.5 nm when measured for a measurement area of 246.6×187.5 &mgr;m and 0.1 to 5.0 nm when measured for a measurement area of 2.5×1.9 mm, and, (3) controlled heat shrinkage factors in the machine and transverse directions at 105° C. and 150° C.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile