Patents by Inventor Alfonso Carlos Cadaval Fernandez De Leceta

Alfonso Carlos Cadaval Fernandez De Leceta has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Membrane electrode assembly and method of its production
    Patent number: 6685806
    Abstract: Membrane-electrode assembly consisting of a cationic exchange membrane which contains fluorine (made of hydrolyzed copolymer of tetrafluoro-ethylene and vinyl ether which contains perfluorosulfur with PE=900-1300) and porous layers of electrode material (made of electrocatalyst), inactive electroconductor material and fluoropolymer agglutinating material arranged on both surfaces of the cationic exchange membrane. The cationic exchange membrane which contains the fluorine is made of hydrolyzed copolymer of tetrafluoroethylene with vinyl ether which contains perfluorosulfur, having a crystallinity grade between 2 and 8%; porous layers of the electrode material are obtained which have a porosity comprised between 40 and 70% and decreasing in the direction of the cationic exchange membrane surface with a porosity gradient from 5 to 15% par 1&mgr;. Said membrane-electrode assembly is used in fuel cells, in water electrolysis and in other electrochemical process.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: February 3, 2004
    Assignee: David Fuel Cell Components, S.L.
    Inventors: Alfonso Carlos Cadaval Fernandez De Leceta, Ricardo Blach Vizoso