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:
Feb. 25, 2014
Filed:
Jun. 09, 2011
Carlos Hinton, West Warwick, RI (US);
Nao Yokota, Saunderstown, RI (US);
Hirokazu Tajima, Osaka, JP;
Roberto Siu, Providence, RI (US);
Carlos Hinton, West Warwick, RI (US);
Nao Yokota, Saunderstown, RI (US);
Hirokazu Tajima, Osaka, JP;
Roberto Siu, Providence, RI (US);
Toray Plastics (America), Inc., N. Kingstown, RI (US);
Abstract
Biaxially oriented polyester films including polyester polymer, a carbodiimide hydrolysis stabilizer, and a UV absorber are described. The polyester films have a carboxyl end group concentration of 5-20 equivalents per ton, and a haze value of 2% or less. The films exhibit superior transparency and possess stable light transmission characteristics. Methods of making the films and articles produced from the films are also described.