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:
Jul. 15, 2014
Filed:
Apr. 13, 2009
Shih-yuan Lee, Taipei County, TW;
Chih-kung Lee, Taipei, TW;
Wen-ching Ko, Kaohsiung, TW;
Jia-lun Chen, Tainan, TW;
Ing Yih Leu, Taipei, TW;
Wen-hsin Hsiao, Longtan Township, Taoyuan County, TW;
Wen-jong Wu, Taipei, TW;
Shih-Yuan Lee, Taipei County, TW;
Chih-Kung Lee, Taipei, TW;
Wen-Ching Ko, Kaohsiung, TW;
Jia-Lun Chen, Tainan, TW;
Ing Yih Leu, Taipei, TW;
Wen-Hsin Hsiao, Longtan Township, Taoyuan County, TW;
Wen-Jong Wu, Taipei, TW;
National Taiwan University, , TW;
Abstract
A method of making a nonfluoropolymer electret film is provided. The method may include: providing a polymer-containing solution, the polymer-containing solution comprising at least one polymer material, at least one solvent, and at least one surfactant, spreading the polymer-containing solution to provide a wetting polymer film, removing at least a portion of the solvent in the wetting polymer film to provide a polymer film, and conducting a Corona charging to the polymer film to form the electret film.