Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Marianne Elisabeth Harmon0
Hongwei Liu0
Hongyi Zhou0
Joyce Hung0
Daniel Joseph Brunelle0
Daniel Steiger0
David Roger Moore0
Date of Patent
June 16, 2009
0Patent Application Number
112631660
Date Filed
October 31, 2005
0Patent Primary Examiner
Patent abstract
Sulfonated polyethersulfones and polymer compositions comprising sulfonated polyethersulfones and at least one inorganic heteropolyacid are useful as proton exchange membranes for fuel cells. The polyethersulfones include structural units derived from at least one biphenol monomer and a monomer of formula I
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