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:
Apr. 30, 2013
Filed:
Dec. 02, 2010
Yoshitaka Tanaka, Gifu, JP;
Toshio Ishidera, Ehime, JP;
Tatsuya Ogawa, Ehime, JP;
Hiromichi Ito, Ehime, JP;
Yoshitaka Tanaka, Gifu, JP;
Toshio Ishidera, Ehime, JP;
Tatsuya Ogawa, Ehime, JP;
Hiromichi Ito, Ehime, JP;
Teijin Limited, Osaka-shi, Osaka, JP;
Abstract
Disclosed are a biaxially oriented polyester film which is excellent in dimensional stability, especially dimensional stability against environmental changes in, for example, temperature and humidity, and a polyester capable of providing the biaxially oriented polyester film with excellent dimensional stability. There is provided a copolymerized aromatic polyester containing aromatic dicarboxylic acid components represented by the following formulae (I) and (II) and a glycol component represented by the following formula (III), wherein In the structural formulae (I) to (III), Rrepresents an alkylene group having 1 to 10 carbon atoms; Rrepresents a phenylene group or a naphthalenediyl group; and Rrepresents an alkylene group having 2 to 4 carbon atoms or a cycloalkylene group having 8 to 10 carbon atoms.