Patents by Inventor Carlos A. Cavalca

Carlos A. Cavalca 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).

  • Fuel cell membrane electrode assemblies with improved power outputs and poison resistance
    Publication number: 20010033960
    Abstract: An electrode-membrane combination for use in a fuel cell and providing improved power outputs and resistance to poisoning. Multiple embodiments are described which generally involve use of a vapor deposited zone or layer of one or more catalytically active metals. Vapor deposition can be carried out by, for example, sputtering or physical vapor deposition.
    Type: Application
    Filed: April 9, 2001
    Publication date: October 25, 2001
    Inventors: Carlos A. Cavalca, James H. Arps, Mahesh Murthy
  • Fuel cell membrane electrode assemblies with improved power outputs and poison resistance
    Patent number: 6300000
    Abstract: An electrode-membrane combination for use in a fuel cell and providing improved power outputs and resistance to poisoning. Multiple embodiments are described which generally involve use of a vapor deposited zone or layer of one or more catalytically active metals. Vapor deposition can be carried out by, for example, sputtering or physical vapor deposition.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: October 9, 2001
    Assignee: Gore Enterprise Holdings
    Inventors: Carlos A. Cavalca, James H. Arps, Mahesh Murthy
  • Fuel cell membrane electrode assemblies with improved power outputs
    Patent number: 6287717
    Abstract: An electrode-membrane combination for use in a fuel cell comprising at least one reactant diffusive, electronically conductive electrode comprising at least one first catalytically active metal and at least one ionically conductive polymer; and at least one ionically conductive membrane contacting the electrode to form an electrode-membrane interfacial region, wherein the interfacial region comprises at least one zone comprising at least one second catalytically active metal and having a zone thickness of about 3 angstroms to about 475 angstroms. Surprisingly improved power output is observed. The zone is preferably deposited by electron beam physical vapor deposition. Substantially spherical nodules are observed for the zone from field-emission SEM analysis.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: September 11, 2001
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Carlos A. Cavalca, James H. Arps