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:
Mar. 04, 2014
Filed:
Dec. 13, 2012
Applicant:
Nitto Denko Corporation, Ibaraki, JP;
Inventors:
Yuri Horie, Osaka, JP;
Kouji Furuuchi, Osaka, JP;
Assignee:
Nitto Denko Corporation, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
D02J 1/06 (2006.01); B29C 55/00 (2006.01); B29C 71/00 (2006.01); B01D 35/00 (2006.01); G10K 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A water-proof sound-transmitting membraneincludes a polytetrafluoroethylene porous membraneand has a surface density of 1 to 20 g/m. The polytetrafluoroethylene porous membraneincludes a first porous layer, and a second porous layerstacked on and integrated with the first porous layerby a binding force acting between polytetrafluoroethylene matrices.