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David Edward BARNWELL

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  • Highworth Wiltshire, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Process for the manufacturing of a reinforced membrane-seal assembly
    • Patent number 10,218,022
    • Issue date Feb 26, 2019
    • Johnson Matthey Fuel Cells Limited
    • David Edward Barnwell
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Membrane-seal assembly
    • Patent number 10,186,720
    • Issue date Jan 22, 2019
    • Johnson Matthey Fuel Cells Limited
    • David Edward Barnwell
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Process of manufacturing a catalyst-coated membrane-seal assembly
    • Patent number 10,074,860
    • Issue date Sep 11, 2018
    • Johnson Matthey Fuel Cells Limited
    • David Edward Barnwell
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Membrane structure
    • Patent number 9,692,071
    • Issue date Jun 27, 2017
    • Johnson Matthey Fuel Cells Limited
    • David Edward Barnwell
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Membrane electrode assembly
    • Patent number 8,399,145
    • Issue date Mar 19, 2013
    • Johnson Matthey Fuel Cells Limited
    • David Edward Barnwell
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Composite membrane
    • Patent number 7,128,993
    • Issue date Oct 31, 2006
    • Johnson Matthey Public Limited Company
    • David Edward Barnwell
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Cable blocking
    • Patent number 5,281,763
    • Issue date Jan 25, 1994
    • Raychem GmbH
    • Stephen A. Hey
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Heat shrinkable device with adhesive barrier for connecting elongat...
    • Patent number 4,896,904
    • Issue date Jan 30, 1990
    • Rachem Limited
    • John A. Gadsden
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Assembly for marking elongate objects
    • Patent number 4,465,717
    • Issue date Aug 14, 1984
    • Raychem Limited
    • David Crofts
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

  • Information Patent Application

    MEMBRANE AND PROCESS
    • Publication number 20230352713
    • Publication date Nov 2, 2023
    • JOHNSON MATTHEY HYDROGEN TECHNOLOGIES LIMITED
    • David Edward BARNWELL
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    MEMBRANE AND PROCESS
    • Publication number 20200303753
    • Publication date Sep 24, 2020
    • David Edward BARNWELL
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    MEMBRANE-SEAL ASSEMBLY
    • Publication number 20170110742
    • Publication date Apr 20, 2017
    • JOHNSON MATTHEY FUEL CELLS LIMITED
    • David Edward BARNWELL
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    PROCESS OF MANUFACTURING A CATALYST-COATED MEMBRANE-SEAL ASSEMBLY
    • Publication number 20170104225
    • Publication date Apr 13, 2017
    • JOHNSON MATTHEY FUEL CELLS LIMITED
    • David Edward BARNWELL
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    PROCESS
    • Publication number 20170098844
    • Publication date Apr 6, 2017
    • JOHNSON MATTHEY FUEL CELLS LIMITED
    • David Edward BARNWELL
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    MEMBRANE STRUCTURE
    • Publication number 20130224623
    • Publication date Aug 29, 2013
    • JOHNSON MATTHEY FUEL CELLS LIMITED
    • David Edward Barnwell
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    ION-CONDUCTING MEMBRANE STRUCTURES
    • Publication number 20110091790
    • Publication date Apr 21, 2011
    • Johnson Matthey Public Limited Company
    • David Edward Barnwell
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    MEMBRANE ELECTRODE ASSEMBLY
    • Publication number 20100209811
    • Publication date Aug 19, 2010
    • Johnson Matthey Public Limited Company
    • David Edward Barnwell
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Composite membrane
    • Publication number 20040009385
    • Publication date Jan 15, 2004
    • David Edward Barnwell
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...