Polymer membrane, process for its production and...

Details Polymer membrane, process for its production and... Polymer membrane, process for its production and...

2007-12-25

2007-12-25

Wu, David W. (Department: 1713)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C429S314000, C204S252000, C521S027000

Reexamination Certificate

active

11042516

ABSTRACT:
The present invention provides a polymer membrane mainly made of an ion exchange resin which further comprises melt-spun fluororesin fibers such as fibers made of an ethylene-tetrafluoroethylene copolymer, a polyvinylidene fluoride or the like, having fiber diameters of from 0.01 to 20 μm, fiber lengths of from 1 μm to 10 mm and aspect ratios of at least 5 in an amount of from 1 to 40% based on the total mass. The polymer membrane is excellent in handleability and shows excellent dimensional stability when hydrated, and therefore a polymer electrolyte fuel cell provided with a membrane-electrode assembly having the polymer membrane as an electrolyte membrane has great durability.

REFERENCES:
patent: 4204938 (1980-05-01), Bachot et al.
patent: 6692858 (2004-02-01), Higuchi et al.
patent: 2005/0214611 (2005-09-01), Hommura
patent: 94679 (1983-11-01), None
patent: 94679 (1983-11-01), None
patent: 1139472 (2001-10-01), None
patent: 1139472 (2001-10-01), None
patent: 58-037030 (1983-03-01), None
patent: 58-201823 (1983-11-01), None
patent: 63-037134 (1988-02-01), None
patent: 06-231779 (1994-08-01), None
patent: 2001-345111 (2001-12-01), None
patent: 2002-317058 (2002-10-01), None
patent: 2003-051320 (2003-02-01), None
patent: 2003-055568 (2003-02-01), None
patent: 2003-197218 (2003-07-01), None
U.S. Appl. No. 11/030,295, filed Jan. 7, 2005, Terada, et al.
U.S. Appl. No. 11/092,908, filed Mar. 30, 2005, Hommura, et al.
U.S. Appl. No. 11/042,516, filed Jan. 26, 2005, Hommura.
U.S. Appl. No. 11/312,342, filed Dec. 21, 2005, Kotera, et al.

Affiliated with

Also associated with

Rating

Polymer membrane, process for its production and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polymer membrane, process for its production and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymer membrane, process for its production and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3881412