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:
Jun. 20, 2017
Filed:
Aug. 06, 2014
Applicant:
Tokyo Ohka Kogyo Co., Ltd., Kawasaki-shi, JP;
Inventor:
Tsukasa Sugawara, Kawasaki, JP;
Assignee:
TOKYO OHKA KOGYO CO., LTD., Kawasaki-Shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08J 9/26 (2006.01); C08J 9/00 (2006.01); C08J 5/18 (2006.01); H01M 2/16 (2006.01); H01M 10/0525 (2010.01); H01M 2/14 (2006.01);
U.S. Cl.
CPC ...
C08J 9/26 (2013.01); C08J 5/18 (2013.01); C08J 9/0066 (2013.01); H01M 2/145 (2013.01); H01M 2/1653 (2013.01); H01M 10/0525 (2013.01); C08J 2201/044 (2013.01); C08J 2201/0442 (2013.01); C08J 2207/00 (2013.01); C08J 2379/08 (2013.01); H01M 2/14 (2013.01); H01M 2220/30 (2013.01);
Abstract
A porous polyimide resin film having a high aperture ratio, and a method for producing a porous polyimide film. The method includes removing fine particles from a polyimide resin-fine particle composite film to obtain a porous polyimide resin film by either removing at least a part of a polyimide resin portion of the polyimide resin-fine particle composite film prior to removing the fine particles, or by removing at least a part of the porous polyimide resin film subsequent to removing the fine particles.