Patents by Inventor Silvain Buche

Silvain Buche 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).

  • Co-tolerant catalyst for PAFC
    Patent number: 9887428
    Abstract: A binary alloy catalyst comprising platinum and tantalum, wherein the tantalum is present in the alloy at 15 to 50 atomic % and a phosphoric acid fuel cell comprising such a catalyst is disclosed. The catalyst provides a better CO tolerance.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: February 6, 2018
    Assignee: Johnson Matthey Fuel Cells Limited
    Inventors: Sarah Caroline Ball, Brian Ronald Charles Theobald, Silvain Buche
  • CO- TOLERANT CATALYST FOR PAFC
    Publication number: 20150380758
    Abstract: A binary alloy catalyst comprising platinum and tantalum, wherein the tantalum is present in the alloy at 15 to 50 atomic % and a phosphoric acid fuel cell comprising such a catalyst is disclosed. The catalyst provides a better CO tolerance.
    Type: Application
    Filed: January 29, 2014
    Publication date: December 31, 2015
    Applicant: JOHNSON MATTHEY FUEL CELLS LIMITED
    Inventors: Sarah Caroline BALL, Brian Ronald Charles THEOBALD, Silvain BUCHE
  • Sealing of a membrane electrode assembly
    Patent number: 8551668
    Abstract: A sealed and/or reinforced membrane electrode assembly is disclosed. Encapsulation films, each comprising a backing layer and an adhesive layer, are positioned on the edges of at least one face of each gas diffusion substrate such that the adhesive layers impregnate into each gas diffusion substrate. Methods of forming sealed and/or reinforced membrane electrode assemblies are also disclosed.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: October 8, 2013
    Assignee: Johnson Matthey Fuel Cells Limited
    Inventors: Silvain Buche, Adam John Hodgkinson, Catherine Helen de Rouffignac, Jonathan David Brereton Sharman
  • SEALING OF A MEMBRANE ELECTRODE ASSEMBLY
    Publication number: 20130040228
    Abstract: A sealed and/or reinforced membrane electrode assembly is disclosed. Encapsulation films, each comprising a backing layer and an adhesive layer, are positioned on the edges of at least one face of each gas diffusion substrate such that the adhesive layers impregnate into each gas diffusion substrate. Methods of forming sealed and/or reinforced membrane electrode assemblies are also disclosed.
    Type: Application
    Filed: October 17, 2012
    Publication date: February 14, 2013
    Applicant: Johnson Matthey Public Limited Company
    Inventors: Silvain Buche, Adam John Hodgkinson, Catherine Helen de Rouffignac, Jonathan David Brereton Sharman
  • Sealing of a membrane electrode assembly
    Patent number: 8309268
    Abstract: A sealed and/or reinforced membrane electrode assembly is disclosed. Encapsulation films, each comprising a backing layer and an adhesive layer, are positioned on the edges of at least one face of each gas diffusion substrate such that the adhesive layers impregnate into each gas diffusion substrate. Methods of forming sealed and/or reinforced membrane electrode assemblies are also disclosed.
    Type: Grant
    Filed: August 2, 2004
    Date of Patent: November 13, 2012
    Assignee: Johnson Matthey Fuel Cells Limited
    Inventors: Silvain Buche, Adam John Hodgkinson, Catherine Helen de Rouffignac, Jonathan David Brereton Sharman
  • Sealing of a membrane electrode assembly
    Publication number: 20070190400
    Abstract: A sealed and/or reinforced membrane electrode assembly is disclosed. Encapsulation films, each comprising a backing layer and an adhesive layer, are positioned on the edges of at least one face of each gas diffusion substrate such that the adhesive layers impregnate into each gas diffusion substrate. Methods of forming sealed and/or reinforced membrane electrode assemblies are also disclosed.
    Type: Application
    Filed: August 2, 2004
    Publication date: August 16, 2007
    Inventors: Silvain Buche, Adam Hodgkinson, Catherine de Rouffignac, Jonathan David Sharman
  • Composite membrane
    Patent number: 7128993
    Abstract: The present invention relates to a composite membrane comprising at least one ion-conducting polymer and a network of randomly orientated individual fibers, wherein there is a continuous region of the membrane at one or both of the membrane faces wherein the density of fibers is lower than the density of fibers in the membrane as a whole. The invention further relates to processes for manufacturing membranes according to the invention, and membrane electrode assemblies comprising membranes according to the invention.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: October 31, 2006
    Assignee: Johnson Matthey Public Limited Company
    Inventors: David Edward Barnwell, Silvain Buche, Lorenz Gubler, Thomas Robertson Ralph
  • Electrocatalyst ink
    Publication number: 20050151121
    Abstract: An electrocatalyst ink comprising one or more electrocatalyst metals and one or more proton-conducting polymers, characterised in that the electrocatalyst ink further comprises particulate graphite which is present at a loading of 1 to 40 weight % with respect to the weight of the electrocatalyst, and a process for the preparation of said ink is disclosed. The use of the ink in a gas diffusion electrode, particularly for use in PEM fuel cells is also disclosed.
    Type: Application
    Filed: January 6, 2003
    Publication date: July 14, 2005
    Applicant: Johnson Matthey Public Limited Company
    Inventors: Silvain Buche, Karen Hogarth, John Gascoyne, Thomas Ralph
  • Composite membrane
    Publication number: 20040009385
    Abstract: The present invention relates to a composite membrane comprising at least one ion-conducting polymer and a network of randomly orientated individual fibres, wherein there is a continuous region of the membrane at one or both of the membrane faces wherein the density of fibres is lower than the density of fibres in the membrane as a whole. The invention further relates to processes for manufacturing membranes according to the invention, and membrane electrode assemblies comprising membranes according to the invention.
    Type: Application
    Filed: May 2, 2003
    Publication date: January 15, 2004
    Inventors: David Edward Barnwell, Silvain Buche, Lorenz Gubler, Thomas Robertson Ralph