Patents by Inventor Edward A. Barnwell
Edward A. Barnwell 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).
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Publication number: 20230352713Abstract: A reinforced ion-conducting membrane comprises a planar reinforcing component which comprises a porous polymer material; an ion-conducting component embedded in at least a region of the planar reinforcing component, which ion-conducting component comprises an ion-conducting polymer material; and linking groups which are chemically bonded to both the planar reinforcing component and the ion-conducting component. The reinforced ion-conducting membrane is useful as the membrane in a membrane-electrode assembly for example as used in fuel cells.Type: ApplicationFiled: June 23, 2023Publication date: November 2, 2023Inventors: David Edward BARNWELL, Peter GRAY, Thomas Robertson RALPH, Mayur Kishorbhai MISTRY
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Publication number: 20200303753Abstract: A reinforced ion-conducting membrane comprises a planar reinforcing component which comprises a porous polymer material; an ion-conducting component embedded in at least a region of the planar reinforcing component, which ion-conducting component comprises an ion-conducting polymer material; and linking groups which are chemically bonded to both the planar reinforcing component and the ion-conducting component. The reinforced ion-conducting membrane is useful as the membrane in a membrane-electrode assembly for example as used in fuel cells.Type: ApplicationFiled: May 25, 2017Publication date: September 24, 2020Inventors: David Edward BARNWELL, Peter GRAY, Thomas Robertson RALPH, Mayur Kishorbhai MISTRY
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Patent number: 10218022Abstract: 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: GrantFiled: March 24, 2015Date of Patent: February 26, 2019Assignee: Johnson Matthey Fuel Cells LimitedInventors: David Edward Barnwell, Robert Jeffrey Coleman, Angus Dickinson, Peter Geoffrey Gray, Jorge Manuel Caramelo Soares
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Patent number: 10186720Abstract: 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: GrantFiled: March 24, 2015Date of Patent: January 22, 2019Assignee: Johnson Matthey Fuel Cells LimitedInventors: David Edward Barnwell, Robert Jeffrey Coleman, Angus Dickinson, Peter Geoffrey Gray, Jorge Manuel Caramelo Soares
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Patent number: 10074860Abstract: Disclosed is a process for the manufacture of a catalyst-coated membrane-seal assembly, including: (i) providing a carrier material; (ii-i) forming a first layer, the first layer being formed by: (a) depositing a first catalyst component onto the carrier material such that the first catalyst component is deposited in discrete regions; (b) drying the first layer; (ii-ii) forming a second layer, the second layer being formed by: (a) depositing a first seal component, such that the first seal component provides a picture frame pattern having a continuous region and void regions, the continuous region including second seal component and the void regions being free from second seal component; (b) depositing a first ionomer component onto the first layer, such that the first ionomer component is deposited in discrete regions; and (c) drying the second layer.Type: GrantFiled: March 24, 2015Date of Patent: September 11, 2018Assignee: Johnson Matthey Fuel Cells LimitedInventors: David Edward Barnwell, Robert Jeffrey Coleman, Angus Dickinson, Jorge Manuel Caramelo Soares, Lee Alan Sweetland
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Patent number: 9692071Abstract: A membrane, suitable for use in a fuel cell comprises: (a) a central region comprising an ion-conducting polymeric material; (b) a border region which creates a frame around the central region and which consists of one or more non-ion-conducting materials wherein at least one of the one or more non-ion-conducting materials forms a layer; wherein the non-ion-conducting material of the border region overlaps the ion-conducting polymeric material of the central region by 0 to 10 mm in an overlap region.Type: GrantFiled: July 21, 2011Date of Patent: June 27, 2017Assignee: JOHNSON MATTHEY FUEL CELLS LIMITEDInventors: David Edward Barnwell, Peter Antony Trew, Thomas Robertson Ralph, Robert Jeffrey Coleman
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Publication number: 20170110742Abstract: 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: ApplicationFiled: March 24, 2015Publication date: April 20, 2017Inventors: David Edward BARNWELL, Robert Jeffrey COLEMAN, Angus DICKINSON, Peter Geoffrey GRAY, Jorge Manuel Caramelo SOARES
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Publication number: 20170104225Abstract: Disclosed is a process for the manufacture of a catalyst-coated membrane-seal assembly, including: (i) providing a carrier material; (ii-i) forming a first layer, the first layer being formed by: (a) depositing a first catalyst component onto the carrier material such that the first catalyst component is deposited in discrete regions; (b) drying the first layer; (ii-ii) forming a second layer, the second layer being formed by: (a) depositing a first seal component, such that the first seal component provides a picture frame pattern having a continuous region and void regions, the continuous region including second seal component and the void regions being free from second seal component; (b) depositing a first ionomer component onto the first layer, such that the first ionomer component is deposited in discrete regions; and (c) drying the second layer.Type: ApplicationFiled: March 24, 2015Publication date: April 13, 2017Applicant: JOHNSON MATTHEY FUEL CELLS LIMITEDInventors: David Edward BARNWELL, Robert Jeffrey COLEMAN, Angus DICKINSON, Jorge Manuel Caramelo SOARES, Lee Alan SWEETLAND
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Publication number: 20170098844Abstract: 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: ApplicationFiled: March 24, 2015Publication date: April 6, 2017Applicant: JOHNSON MATTHEY FUEL CELLS LIMITEDInventors: David Edward BARNWELL, Robert Jeffrey COLEMAN, Angus DICKINSON, Peter Geoffrey GRAY, Jorge Manuel Caramelo SOARES
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Publication number: 20130224623Abstract: A membrane, suitable for use in a fuel cell, comprises: (a) a central region comprising an ion-conducting polymeric material; (b) a border region which creates a frame around the central region and which consists of one or more non-ion-conducting materials wherein at least one of the one or more non-ion-conducting materials forms a layer; wherein the non-ion-conducting material of the border region overlaps the ion-conducting polymeric material of the central region by 0 to 10 mm in an overlap region.Type: ApplicationFiled: July 21, 2011Publication date: August 29, 2013Applicant: JOHNSON MATTHEY FUEL CELLS LIMITEDInventors: David Edward Barnwell, Peter Antony Trew, Thomas Robertson Ralph, Robert Jeffrey Coleman
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Patent number: 8399145Abstract: A membrane electrode assembly having a peripheral edge region and a central region. The membrane electrode assembly comprises an ion-conducting membrane, first and second electrocatalyst layers disposed either side of the ion-conducting membrane, and first and second gas diffusion layers disposed either side of the first and second electrocatalyst layers respectively. The membrane electrode assembly further comprises an edge protection member, the edge protection member comprising a film layer, a bonding layer, and one or more additives selected from the group consisting of free radical decomposition catalyst, self regenerating antioxidant, hydrogen donors (H-donor) primary antioxidant, free radical scavenger secondary antioxidant, oxygen absorbers (oxygen scavenger) and elemental palladium.Type: GrantFiled: September 18, 2008Date of Patent: March 19, 2013Assignee: Johnson Matthey Fuel Cells LimitedInventors: David Edward Barnwell, Thomas Robertson Ralph, Peter Anthony Trew
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Publication number: 20110091790Abstract: An ion-conducting membrane structure comprising (i) an ion-conducting membrane wherein said membrane has a first face and a second face, (ii) a first hydrogen peroxide decomposition catalyst and (iii) a first radical scavenger, wherein the first hydrogen peroxide decomposition catalyst is in a first layer on the first face of the ion-conducting membrane in an amount from 0.01 to 15 ?g/cm2 or the first hydrogen peroxide decomposition catalyst in embedded within the ion-conducting membrane in an amount from 0.001 to 5% by weight is disclosed.Type: ApplicationFiled: March 4, 2009Publication date: April 21, 2011Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: David Edward Barnwell, Adam John Hodgkinson, Thomas Robertson Ralph
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Publication number: 20100209811Abstract: A membrane electrode assembly having a peripheral edge region and a central region. The membrane electrode assembly comprises an ion-conducting membrane, first and second electrocatalyst layers disposed either side of the ion-conducting membrane, and first and second gas diffusion layers disposed either side of the first and second electrocatalyst layers respectively. The membrane electrode assembly further comprises an edge protection member, the edge protection member comprising a film layer, a bonding layer, and one or more additives selected from the group consisting of free radical decomposition catalyst, self regenerating antioxidant, hydrogen donors (H-donor) primary antioxidant, free radical scavenger secondary antioxidant, oxygen absorbers (oxygen scavenger) and elemental palladium.Type: ApplicationFiled: September 18, 2008Publication date: August 19, 2010Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: David Edward Barnwell, Thomas Robertson Ralph, Peter Anthony Trew
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Patent number: 7128993Abstract: 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: GrantFiled: May 2, 2003Date of Patent: October 31, 2006Assignee: Johnson Matthey Public Limited CompanyInventors: David Edward Barnwell, Silvain Buche, Lorenz Gubler, Thomas Robertson Ralph
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Publication number: 20040009385Abstract: 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: ApplicationFiled: May 2, 2003Publication date: January 15, 2004Inventors: David Edward Barnwell, Silvain Buche, Lorenz Gubler, Thomas Robertson Ralph
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Patent number: 4831972Abstract: Engine with a single oscillating piston body having five aligned piston portions operatively functioning in five aligned corresponding cylinder chambers, including a central large diameter double acting piston and cylinder, two intermediate diameter single acting pistons and cylinders, one on each side of the central piston; and two small diameter single acting end pistons and cylinders, each spaced outwardly from the respective intermediate pistons and cylinders.Type: GrantFiled: May 4, 1988Date of Patent: May 23, 1989Inventor: Edward A. Barnwell