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. 04, 2017
Filed:
Jun. 23, 2014
Applicant:
Sumitomo Electric Fine Polymer, Inc., Sennan-gun, Osaka, JP;
Inventors:
Fumihiro Hayashi, Osaka, JP;
Aya Murata, Osaka, JP;
Hiroyuki Tsujiwaki, Osaka, JP;
Atsushi Uno, Osaka, JP;
Assignee:
SUMITOMO ELECTRIC FINE POLYMER, INC., Sennan-gun, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 69/02 (2006.01); B01D 71/06 (2006.01); B29C 55/12 (2006.01); B01D 67/00 (2006.01); C08J 5/18 (2006.01); B29C 67/20 (2006.01); B01D 71/32 (2006.01); B01D 71/36 (2006.01); B29C 55/00 (2006.01); B29K 27/18 (2006.01); B29L 7/00 (2006.01); B29K 105/04 (2006.01);
U.S. Cl.
CPC ...
C08J 5/18 (2013.01); B01D 67/0027 (2013.01); B01D 67/0083 (2013.01); B01D 69/02 (2013.01); B01D 71/32 (2013.01); B01D 71/36 (2013.01); B29C 55/005 (2013.01); B29C 55/12 (2013.01); B29C 67/20 (2013.01); B01D 2323/08 (2013.01); B01D 2325/02 (2013.01); B29K 2027/18 (2013.01); B29K 2105/04 (2013.01); B29L 2007/008 (2013.01); C08J 2327/18 (2013.01);
Abstract
A porous polytetrafluoroethylene film comprising a fluororesin containing polytetrafluoroethylene as a main component, wherein an envelope surface area of resin fibers included per film having an area of 1 mand a thickness of 25 μm is 4,000 mor more, and a melting point peak is 333° C. or lower.