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. 12, 2013
Filed:
Jul. 29, 2011
Ichiro Terada, Tokyo, JP;
Seigo Kotera, Tokyo, JP;
Kazuo Hamazaki, Tokyo, JP;
Shigeru Aida, Tokyo, JP;
Ken Iruya, Tokyo, JP;
Ichiro Terada, Tokyo, JP;
Seigo Kotera, Tokyo, JP;
Kazuo Hamazaki, Tokyo, JP;
Shigeru Aida, Tokyo, JP;
Ken Iruya, Tokyo, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
To obtain a nonwoven fabric which is excellent in the heat resistance and the chemical resistance, of which the fiber diameter is small, and which is excellent in the mechanical strength at a temperature at which it is used; and an electrolyte membrane which is excellent in the dimensional stability when it is swollen by water, and of which an increase in the resistance by a reinforcing material is suppressed. A nonwoven fabriccontaining fibersof an ethylene/tetrafluoroethylene copolymer having a storage elastic modulus E' at 25° C. of at least 8×10Pa and a melt viscosity measured at 300° C. of higher than 60 Pa·s and at most 300 Pa·s, wherein the average fiber diameter of the fibers is from 0.01 to 3 μm; and an electrolyte membrane reinforced by the nonwoven fabric