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. 14, 2015
Filed:
Jul. 01, 2011
Applicants:
Takafumi Nanba, Tokyo, JP;
Naoki Ohashi, Tokyo, JP;
Inventors:
Takafumi Nanba, Tokyo, JP;
Naoki Ohashi, Tokyo, JP;
Assignee:
W. L. Gore & Associates, Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/88 (2006.01); H01M 8/10 (2006.01); B32B 37/10 (2006.01); B32B 37/24 (2006.01); C25B 9/10 (2006.01); H01M 8/02 (2006.01); B32B 37/26 (2006.01); B32B 38/10 (2006.01);
U.S. Cl.
CPC ...
H01M 8/1006 (2013.01); B32B 37/10 (2013.01); B32B 37/24 (2013.01); B32B 2037/268 (2013.01); B32B 2309/02 (2013.01); B32B 2309/027 (2013.01); B32B 2309/105 (2013.01); B32B 2309/12 (2013.01); B32B 2457/18 (2013.01); C25B 9/10 (2013.01); H01M 8/0234 (2013.01); H01M 8/0239 (2013.01); H01M 8/0243 (2013.01); H01M 8/1004 (2013.01); H01M 2008/1095 (2013.01); Y02E 60/521 (2013.01); B32B 38/10 (2013.01);
Abstract
In a carbon black (CB)/PTFE composite porous sheet that can be used as a gas diffusion layer in an electrochemical device in applications involving electro chemical reaction such as a polymer electrolyte fuel cell, electrolysis, gas sensor and the like, wrinkle or breakage may be produced due to its flexibility. A method is provided which makes it possible to easily handle this sheet that is difficult to handle, without giving rise to wrinkle or breakage. The present invention relates to a method for laminating the composite sheet on MEA, comprising the steps of: