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. 28, 2015
Filed:
Apr. 28, 2009
Takashi Wano, Osaka, JP;
Hiroyuki Higuchi, Osaka, JP;
Masayoshi Kawabe, Osaka, JP;
Ryoichi Matsushima, Osaka, JP;
Yoshinori Yamamoto, Aichi, JP;
Koichiro Yamashita, Aichi, JP;
Takashi Wano, Osaka, JP;
Hiroyuki Higuchi, Osaka, JP;
Masayoshi Kawabe, Osaka, JP;
Ryoichi Matsushima, Osaka, JP;
Yoshinori Yamamoto, Aichi, JP;
Koichiro Yamashita, Aichi, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
The method for producing the porous sheet of the present invention includes the steps of (I) preparing a plurality of sheet materials that contain polytetrafluoroethylene and carbon particles and (II) stacking the plurality of sheet materials over one another and rolling the stacked sheet materials. In the method for producing the porous sheet of the present invention, step (I) and step (II) may be repeated alternately. Further, as the sheet materials to be used in the production method of the present invention, a base sheet obtained by forming a mixture containing polytetrafluoroethylene and carbon particles into sheet form also can be used, or a laminated sheet obtained by stacking a plurality of base sheets over one another and rolling them also can be used, for example.