Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Reexamination Certificate
2011-03-01
2011-03-01
Bernshteyn, Michael M (Department: 1762)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ion-exchange polymer or process of preparing
C429S006000, C252S062200, C252S500000
Reexamination Certificate
active
07897650
ABSTRACT:
An ionically conductive polymer is a copolymer including first and second polymer segments. The first polymer segments have a hydrophobic character and a high oxygen permeability. The second polymer segments have a hydrophilic character and a low oxygen permeability. The copolymer has an ionic conductivity of at least about 1×10−5S/cm at any point within a temperature range of from 30° C. to 150° C. and a relative humidity range of from 20% to 100%. The ionically conductive polymer can be used in an electrochemical device such as a fuel cell, for example, used as a binder in an electrode or used to produce a membrane.
REFERENCES:
patent: 6503378 (2003-01-01), Fisher
patent: 6926984 (2005-08-01), Asano et al.
patent: 6964823 (2005-11-01), Koyama et al.
patent: 7534515 (2009-05-01), Nam et al.
patent: 2005/0164063 (2005-07-01), Wariishi et al.
patent: 2006/0036064 (2006-02-01), McGrath et al.
patent: 2005228671 (2005-08-01), None
patent: WO 03062493 (2003-07-01), None
Lei et al., Abstract, Effect of copolymer composition on the oxygen transport properties of sulfonated poly(arylene ether sulfone) and sulfonated poly(sulfide sulfone) PEMs, Electrochemical Society, Pennington, NJ ETATS-UNIS (1948) (Revue), p. 1 of 1.
Von Kraemer et al., Abstract, Gas diffusion electrodes and membrane electrode assemblies based on a sulfonated polysulfone for high-temperature pemfc, Electrochemical Society, Pennington, NJ, ETATS-UNIS (1948) (Revue), p. 1 of 1.
Lalgudi Ramanathan S.
Sayre Jay R.
Vijayendran Bhima R.
Bernshteyn Michael M
MacMillan Sobanski & Todd LLC
LandOfFree
Ionically conductive polymers for use in fuel cells does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ionically conductive polymers for use in fuel cells, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ionically conductive polymers for use in fuel cells will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2656484