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:
Jun. 16, 2009
Filed:
Oct. 31, 2005
Joyce Hung, Niskayuna, NY (US);
Hongyi Zhou, Niskayuna, NY (US);
Daniel Joseph Brunelle, Burnt Hills, NY (US);
Marianne Elisabeth Harmon, Niskayuna, NY (US);
Daniel Steiger, Clifton Park, NY (US);
Hongwei Liu, Troy, NY (US);
David Roger Moore, Albany, NY (US);
Joyce Hung, Niskayuna, NY (US);
Hongyi Zhou, Niskayuna, NY (US);
Daniel Joseph Brunelle, Burnt Hills, NY (US);
Marianne Elisabeth Harmon, Niskayuna, NY (US);
Daniel Steiger, Clifton Park, NY (US);
Hongwei Liu, Troy, NY (US);
David Roger Moore, Albany, NY (US);
General Electric Company, Niskayuna, NY (US);
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 wherein X is O, S or NR;