Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Robert Daniel Lousenberg0
Andrew Edward Feiring0
Date of Patent
February 20, 2024
0Patent Application Number
176402310
Date Filed
September 9, 2020
0Patent Citations
Patent Primary Examiner
CPC Code
Patent abstract
Novel copolymers that are fluoropolymers including a first repeat unit that is fluorinated and cyclic and a second repeat unit from a trifluorovinyl methylene ether monomer having sulfur or sulfone functionality in the pendant group are disclosed. The copolymers have relatively high gas permeability as a result of a cyclic repeat unit in the copolymer backbone and ionomers from oxidation of the sulfur containing functionality are particularity useful in the cathode structure of a proton exchange membrane fuel cell.
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