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:
Aug. 30, 2011
Filed:
May. 15, 2008
Marco Antonio Salanitri, Catania, IT;
Giuseppe Consiglio, Catania, IT;
Chiara Silvana Leo, Bari, IT;
Stefania Calamia, Messina, IT;
Marco Antonio Salanitri, Catania, IT;
Giuseppe Consiglio, Catania, IT;
Chiara Silvana Leo, Bari, IT;
Stefania Calamia, Messina, IT;
STMicroelectronics S.R.L., Agrate Brianza (MI), IT;
Abstract
A fuel cell membrane is described comprising at least one sulfonated aromatic polyether copolymer comprising a poly-arylen-ether-ketone (PEK) moiety or sulfonated derivatives thereof, deriving from spiro-bis-indane or 4,4'-(hexafluoroisopropylidene)diphenol (BPAF), and an arylene-sulfone, or an arylene-ketone or sulfonated derivative thereof; said copolymer having the following formula (1): wherein Arhas formula, wherein X is spiro-bis-indanile (SBI) (b) or BPAF (c) having formulas: and wherein Y is H or SOH, andArhas formula wherein W is CO or SO, and Y is H or SOH, wherein Z is OH or Cl; and wherein at least one between Aror Arcomprise at least one sulfonic group; and wherein n is an integer comprised between 2 and 50. A method for the production of such membrane is also described.