Patents by Inventor Peter Geoffrey Gray

Peter Geoffrey Gray 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).

  • Patent number: 10218022
    Abstract: A process for manufacturing a reinforced membrane-seal assembly includes: (i) providing a carrier material; (ii) providing a planar reinforcing component having one or more first regions including pores and a second region including pores, the first regions being patches and non-continuous and the second region surrounding the first regions and being continuous; (iii) depositing an ion-conducting component; (iv) drying the ion-conducting component; (v) depositing a seal component; (vi) drying the seal component (vii) removing the carrier material. In embodiments, ion-conducting component fills the pores in the first regions and seal component fills the pores in the second region; steps (ii), (iii) and (v) can be carried out in any order; step (iv) is carried out subsequent to step (iii); step (vi) is carried out subsequent to step (v); and steps (iv) and (vi) are carried out subsequent to step (ii). Also disclosed is an assembly prepared by such process.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: February 26, 2019
    Assignee: Johnson Matthey Fuel Cells Limited
    Inventors: David Edward Barnwell, Robert Jeffrey Coleman, Angus Dickinson, Peter Geoffrey Gray, Jorge Manuel Caramelo Soares
  • Patent number: 10186720
    Abstract: Disclosed is a reinforced membrane-seal assembly, the reinforced membrane-seal assembly including: an inner region and a border region and wherein the inner region includes ion-conducting component and the border region includes seal component; wherein first and second planar porous reinforcing components each extend across the inner region into the border region and wherein the pores of each of the first and second planar porous reinforcing components in the inner region are impregnated with ion-conducting component and the pores of each of the first and second planar porous reinforcing components in the border region are impregnated with seal component is disclosed. Also disclosed is a catalyst-coated reinforced membrane-seal assembly, a reinforced membrane-seal electrode assembly and an electrochemical device including the reinforced membrane-seal assembly.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: January 22, 2019
    Assignee: Johnson Matthey Fuel Cells Limited
    Inventors: David Edward Barnwell, Robert Jeffrey Coleman, Angus Dickinson, Peter Geoffrey Gray, Jorge Manuel Caramelo Soares
  • Patent number: 7338643
    Abstract: A reformate clean-up reactor. The reactor takes a reformate stream and passes it through multiple subreactors that are integrated into a common reactor housing to reduce reformate stream by-product concentration prior to use of the reformate in a fuel cell. The reactor includes a gas shift subreactor to promote the conversion of carbon monoxide to carbon dioxide, a gaseous diffusion membrane subreactor to provide a hydrogen-rich portion of the reformate stream, and a methanation subreactor to convert carbon monoxide into methane and water. In applications where space for a fuel cell system is limited, the integration of the clean—up devices into a common housing provides significant improvements in structural and volumetric efficiency. Moreover, in at least one embodiment of the present invention, the juxtaposition of the gaseous diffusion membrane and the gas shift reactor improves membrane robustness.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: March 4, 2008
    Assignee: General Motors Corporation
    Inventors: Ian Barrey Irons, Julia Margaret Rowe, Peter Geoffrey Gray, Peter Albert Walker
  • Publication number: 20040185312
    Abstract: A reformate clean-up reactor. The reactor takes a reformate stream and passes it through multiple subreactors that are integrated into a common reactor housing to reduce reformate stream by-product concentration prior to use of the reformate in a fuel cell. The reactor includes a gas shift subreactor to promote the conversion of carbon monoxide to carbon dioxide, a gaseous diffusion membrane subreactor to provide a hydrogen-rich portion of the reformate stream, and a methanation subreactor to convert carbon monoxide into methane and water. In applications where space for a fuel cell system is limited, the integration of the clean-up devices into a common housing provides significant improvements in structural and volumetric efficiency. Moreover, in at least one embodiment of the present invention, the juxtaposition of the gaseous diffusion membrane and the gas shift reactor improves membrane robustness.
    Type: Application
    Filed: March 17, 2003
    Publication date: September 23, 2004
    Inventors: Ian Barrey Irons, Julia Margaret Rowe, Peter Geoffrey Gray, Peter Albert Walker
  • Patent number: 6155073
    Abstract: In a heat pump, e.g. comprising two adsorbers (1, 2), the adsorbers are monoliths having a multiplicity of open cells capable of flow-through of gas or vapor, and having a coating of an adsorbent, e.g. zeolite, for a fluid such as water vapor. Waste heat, e.g. from a vehicle engine, is supplied to heater (3), which heats up a heat transfer fluid pumped around the system by a reversible pump (11). Heat is lost to the ambient air by a cooler (4), and air from ambient, or recirculated air, is cooled by passing over an evaporator (6) for adsorbate fluid such as water, before entering a vehicle passenger compartment.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: December 5, 2000
    Assignee: Johnson Matthey Public Limited Company
    Inventor: Peter Geoffrey Gray
  • Patent number: 5943857
    Abstract: A process for the improved conversion of NO.sub.x in the exhaust gases from a light diesel engine using lean NO.sub.x catalyst converter in the exhaust system. The process is characterized in that unburned hydrocarbons are adsorbed into an adsorbent in the catalytic converter at temperatures below 190.degree. C. during cooler parts of the operating cycle, and are desorbed in the temperature range of 198.degree. to 200.degree. C. during hotter parts of the operating cycle. The desorbed hydrocarbons are combined with unburned hydrocarbons in the exhaust to form a composition stream having a higher amount of hydrocarbons than either constituent stream which are then oxidized at the same time as at least a portion of the NO.sub.x is catalytically reduced to form N.sub.2.
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: August 31, 1999
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Graham Paul Ansell, Janet Mary Fisher, Peter Geoffrey Gray, Hugh Gavin Charles Hamilton, Raj Rao Rajaram