Patents by Inventor Rami Michel Abouatallah
Rami Michel Abouatallah 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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Patent number: 11767598Abstract: An electrochemical cell has a membrane located between two flow field plates. On a first side of the membrane, there is a porous support surrounded by a seal between the membrane and the flow field plate. There is a gap between the porous support and the seal at the surface of the membrane. On a second side of the membrane, there is a seal between the membrane and the flow field plate located inside of the gap in plan view. The electrochemical cell is useful, for example, in high pressure or differential pressure electrolysis in which the second side of the membrane will be consistently exposed to a higher pressure than the first side of the membrane.Type: GrantFiled: October 24, 2022Date of Patent: September 26, 2023Assignee: HYDROGENICS CORPORATIONInventors: Rami Michel Abouatallah, Rainey Yu Wang, Nathaniel Ian Joos
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Publication number: 20230084555Abstract: An electrochemical cell has a membrane located between two flow field plates. On a first side of the membrane, there is a porous support surrounded by a seal between the membrane and the flow field plate. There is a gap between the porous support and the seal at the surface of the membrane. On a second side of the membrane, there is a seal between the membrane and the flow field plate located inside of the gap in plan view. The electrochemical cell is useful, for example, in high pressure or differential pressure electrolysis in which the second side of the membrane will be consistently exposed to a higher pressure than the first side of the membrane.Type: ApplicationFiled: October 24, 2022Publication date: March 16, 2023Inventors: Rami Michel ABOUATALLAH, Rainey Yu Wang, Nathaniel Ian Joos
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Patent number: 11479866Abstract: An electrochemical cell has a membrane located between two flow field plates. On a first side of the membrane, there is a porous support surrounded by a seal between the membrane and the flow field plate. There is a gap between the porous support and the seal at the surface of the membrane. On a second side of the membrane, there is a seal between the membrane and the flow field plate located inside of the gap in plan view. The electrochemical cell is useful, for example, in high pressure or differential pressure electrolysis in which the second side of the membrane will be consistently exposed to a higher pressure than the first side of the membrane.Type: GrantFiled: January 29, 2020Date of Patent: October 25, 2022Assignee: Hydrogenics CorporationInventors: Rami Michel Abouatallah, Rainey Yu Wang, Nathaniel Ian Joos
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Patent number: 10847813Abstract: An electrochemical cell has first and second flow fields on opposite sides of a membrane. The first flow field has a set of generally linear channels in which the flow of a fluid in the field is contained between parallel elongate ridges. The second flow field is defined by a set of parallel discontinuous ridges. Preferably most ridge segments in the second flow field are oblique, for example perpendicular, to and overlap with two or more ridges of the first flow field. The flow fields may be used in, for example, water electrolysis cells including high or differential pressure polymer electrolyte membrane (PEM) electrolysis cells.Type: GrantFiled: November 22, 2018Date of Patent: November 24, 2020Assignee: HYDROGENICS CORPORATIONInventors: Rainey Yu Wang, Rami Michel Abouatallah, Nathaniel Ian Joos
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Publication number: 20200173037Abstract: An electrochemical cell has a membrane located between two flow field plates. On a first side of the membrane, there is a porous support surrounded by a seal between the membrane and the flow field plate. There is a gap between the porous support and the seal at the surface of the membrane. On a second side of the membrane, there is a seal between the membrane and the flow field plate located inside of the gap in plan view. The electrochemical cell is useful, for example, in high pressure or differential pressure electrolysis in which the second side of the membrane will be consistently exposed to a higher pressure than the first side of the membrane.Type: ApplicationFiled: January 29, 2020Publication date: June 4, 2020Inventors: Rami Michel ABOUATALLAH, Rainey Yu WANG, Nathaniel Ian JOOS
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Patent number: 10590545Abstract: An electrochemical cell has a membrane located between two flow field plates. On a first side of the membrane, there is a porous support surrounded by a seal between the membrane and the flow field plate. There is a gap between the porous support and the seal at the surface of the membrane. On a second side of the membrane, there is a seal between the membrane and the flow field plate located inside of the gap in plan view. The electrochemical cell is useful, for example, in high pressure or differential pressure electrolysis in which the second side of the membrane will be consistently exposed to a higher pressure than the first side of the membrane.Type: GrantFiled: September 26, 2016Date of Patent: March 17, 2020Assignee: HYDROGENICS CORPORATIONInventors: Rami Michel Abouatallah, Rainey Yu Wang, Nathaniel Ian Joos
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Publication number: 20190097245Abstract: An electrochemical cell has first and second flow fields on opposite sides of a membrane. The first flow field has a set of generally linear channels in which the flow of a fluid in the field is contained between parallel elongate ridges. The second flow field is defined by a set of parallel discontinuous ridges. Preferably most ridge segments in the second flow field are oblique, for example perpendicular, to and overlap with two or more ridges of the first flow field. The flow fields may be used in, for example, water electrolysis cells including high or differential pressure polymer electrolyte membrane (PEM) electrolysis cells.Type: ApplicationFiled: November 22, 2018Publication date: March 28, 2019Inventors: Rainey Yu WANG, Rami Michel ABOUATALLAH, Nathaniel Ian JOOS
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Patent number: 10193164Abstract: An electrochemical cell has first and second flow fields on opposite sides of a membrane. The first flow field has a set of generally linear channels in which the flow of a fluid in the field is contained between parallel elongate ridges. The second flow field is defined by a set of parallel discontinuous ridges. Preferably most ridge segments in the second flow field are oblique, for example perpendicular, to and overlap with two or more ridges of the first flow field. The flow fields may be used in, for example, water electrolysis cells including high or differential pressure polymer electrolyte membrane (PEM) electrolysis cells.Type: GrantFiled: November 16, 2016Date of Patent: January 29, 2019Assignee: Hydrogenics CorporationInventors: Rainey Yu Wang, Rami Michel Abouatallah, Nathaniel Ian Joos
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Publication number: 20170141415Abstract: An electrochemical cell has first and second flow fields on opposite sides of a membrane. The first flow field has a set of generally linear channels in which the flow of a fluid in the field is contained between parallel elongate ridges. The second flow field is defined by a set of parallel discontinuous ridges. Preferably most ridge segments in the second flow field are oblique, for example perpendicular, to and overlap with two or more ridges of the first flow field. The flow fields may be used in, for example, water electrolysis cells including high or differential pressure polymer electrolyte membrane (PEM) electrolysis cells.Type: ApplicationFiled: November 16, 2016Publication date: May 18, 2017Inventors: Rainey Yu WANG, Rami Michel ABOUATALLAH, Nathaniel Ian JOOS
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Publication number: 20170088959Abstract: An electrochemical cell has a membrane located between two flow field plates. On a first side of the membrane, there is a porous support surrounded by a seal between the membrane and the flow field plate. There is a gap between the porous support and the seal at the surface of the membrane. On a second side of the membrane, there is a seal between the membrane and the flow field plate located inside of the gap in plan view. The electrochemical cell is useful, for example, in high pressure or differential pressure electrolysis in which the second side of the membrane will be consistently exposed to a higher pressure than the first side of the membrane.Type: ApplicationFiled: September 26, 2016Publication date: March 30, 2017Inventors: Rami Michel ABOUATALLAH, Rainey Yu WANG, Nathaniel Ian JOOS
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Patent number: 8765318Abstract: An electrochemical cell system is provided having: at least one electrochemical cell stack, each stack having at least one reactant fluid inlet; a pressure transmitter arranged in the at least one reactant fluid inlet of each stack; and a control unit for regulating the electrochemical cell system, the control unit receiving at least one signal value from the pressure transmitter indicative of the reactant fluid pressure. The control unit may compare the at least one signal value with a stored values and generate a leak indication based on the rate of pressure decay within the electrochemical cell system. A method of detecting and indicating a leak is also disclosed.Type: GrantFiled: October 23, 2007Date of Patent: July 1, 2014Assignee: Hydrogenics CorporationInventors: Sonia Quattrociocchi, Rami Michel Abouatallah, Todd Arnold Simpson
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Publication number: 20110097635Abstract: An electrochemical cell system is provided having: at least one electrochemical cell stack, each stack having at least one reactant fluid inlet; a pressure transmitter arranged in the at least one reactant fluid inlet of each stack; and a control unit for regulating the electrochemical cell system, the control unit receiving at least one signal value from the pressure transmitter indicative of the reactant fluid pressure. The control unit may compare the at least one signal value with a stored values and generate a leak indication based on the rate of pressure decay within the electrochemical cell system. A method of detecting and indicating a leak is also disclosed.Type: ApplicationFiled: October 23, 2007Publication date: April 28, 2011Inventors: Sonia Quattrociocchi, Rami Michel Abouatallah, Todd Arnold Simpson
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Patent number: 7569303Abstract: An electrochemical cell assembly includes first and second flow field plates, first and second gas diffusion media disposed between the first and second flow field plates, and a membrane electrode assembly disposed between the first and second gas diffusion media. The membrane electrode assembly can include a proton exchange membrane, and a catalyst layer on the proton exchange membrane. The catalyst layout can be configured to omit the catalyst layer from a portion of the proton exchange membrane adjacent an edge region of one of the first and second gas diffusion media, thereby enabling at least a portion of the reactant fluid flow to first encounter a region of the membrane electrode assembly without the catalyst layer. The modified catalyst layout can improve reactant fluid flow along the membrane electrode assembly, reduce wear on the membrane electrode assembly and improve electrochemical cell efficiency during operation.Type: GrantFiled: September 24, 2004Date of Patent: August 4, 2009Assignee: Hydrogenics CorporationInventors: David Frank, Nathaniel Ian Joos, Mario Dzamarija, Raymond Candido, Rami Michel Abouatallah
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Publication number: 20040245100Abstract: Embodiments of the invention relate to apparatus, systems and methods for testing for short-circuited cells within an electrochemical cell stack. In order to test for a short-circuit, each cell in the stack is supplied with a non-fuel gas at both the anode and cathode sides of the cell. A voltage is supplied across the whole electrochemical cell stack and the individual electrical potentials (ie. voltages) between the anode and cathode of each cell is measured. If the voltage measured across the anode and cathode of a cell is below a certain amount, the cell is determined to be short-circuited.Type: ApplicationFiled: May 14, 2004Publication date: December 9, 2004Inventor: Rami Michel Abouatallah