Patents by Inventor Yolanda Alvarez
Yolanda Alvarez 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: 11962019Abstract: The present invention relates to a carbon based electrode with a large geometrical surface area comprising a frame of an electrically conductive material with several cut-outs with a surface area, which cut-outs are separated from each other by portions of the conductive material, wherein carbon based sub-electrodes dimensioned so as to a least cover the surface area of the cut-outs are positioned in the cut-outs and conductively connected to at least part of each of the portions of the conductive material adjacent to the carbon based sub-electrodes.Type: GrantFiled: September 21, 2018Date of Patent: April 16, 2024Assignee: VITO NVInventors: Lambertus Bouwman, Diana Van Houtven, Deepak Pant, Yolanda Alvarez Gallego, Karolien Vanbroekhoven
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Publication number: 20200295381Abstract: The present invention relates to a carbon based electrode with a large geometrical surface area comprising a frame of an electrically conductive material with several cut-outs with a surface area, which cut-outs are separated from each other by portions of the conductive material, wherein carbon based sub-electrodes dimensioned so as to a least cover the surface area of the cut-outs are positioned in the cut-outs and conductively connected to at least part of each of the portions of the conductive material adjacent to the carbon based sub-electrodes.Type: ApplicationFiled: September 21, 2018Publication date: September 17, 2020Inventors: Lambertus Bouwman, Diana Van Houtven, Deepak Pant, Yolanda Alvarez Gallego, Karolien Vanbroekhoven
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Patent number: 10358729Abstract: An ion-permeable web-reinforced separator, said ion-permeable web-reinforced separator comprising two separator elements separated by an (optionally integrated) substantially hollow by-pass channel, wherein the separator elements each comprise a binder and a metal oxide or hydroxide dispersed therein and the separator elements have a bubble point of at least 1 bar (0.1 MPa) and a back-wash resistance of at least 1 bar (0.1 MPa) and optionally have a specific resistance less than 4 ?-cm at 30° C. in 6M potassium hydroxide solution; an electrochemical cell involving the production or consumption of at least one gas, said electrochemical cell comprising said ion-permeable web-reinforced separator; and the use thereof in an electrochemical cell involving the production or consumption of at least one gas.Type: GrantFiled: August 26, 2013Date of Patent: July 23, 2019Assignee: VITO NVInventors: Willy Doyen, Yolanda Alvarez Gallego
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Publication number: 20190003063Abstract: A mesh-shaped, porous electric current density distributor is for use with an electrode, and is adapted for providing electric current to an active layer of the electrode. The active layer contacts a face of the current density distributor, and the current density distributor includes a porous mesh having several electrically conductive paths. At least part of the electrically conductive paths extend along a direction of major current flow over the current density distributor. The porous mesh includes in a direction crosswise to the direction of major electric current flow, several paths of an electric insulator. The current carrying capacity of the current density distributor in crosswise direction to the major current flow over the current density distributor is smaller than the current carrying capacity in the direction along the major current flow over the current density distributor.Type: ApplicationFiled: September 10, 2018Publication date: January 3, 2019Inventors: Deepak Pant, Xochitl Dominguez Benetton, Yolanda Alvarez Gallego, Bert Bouwman
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Patent number: 10087537Abstract: The present invention relates to a mesh-shaped, porous electric current density distributor for use with an electrode, the current density distributor being adapted for providing electric current to an active layer of the electrode, which active layer is provided to contact a face of the current density distributor, wherein the current density distributor comprises a porous mesh having a plurality of electrically conductive paths, wherein at least part of the electrically conductive paths extend along a direction of major current flow over the current density distributor. The porous mesh comprises in a direction crosswise to the direction of major electric current flow, a plurality of first paths of an electric insulator. The current carrying capacity of the current density distributor in crosswise direction to the major current flow over the current density distributor is smaller than the current carrying capacity in the direction along the major current flow over the current density distributor.Type: GrantFiled: February 26, 2014Date of Patent: October 2, 2018Assignee: VITO NVInventors: Deepak Pant, Xochitl Dominguez Benetton, Yolanda Alvarez Gallego, Bert Bouwman
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Publication number: 20180023201Abstract: An electrochemical process is for recovering a metal element or a metalloid element or a mixture of two or more thereof from at least one water soluble precursor compound containing the metal element or a metalloid element or two or more thereof, in the form of one or more nano particles, in particular nano crystals of at least one reaction product. The process includes supplying the water soluble precursor compound to a water-based catholyte of a cathode compartment of an electrochemical cell, equipped with a cathode containing a gas diffusion electrode, adjusting the pH of the catholyte, supplying at least one oxidant gas to the gas diffusion electrode, and subjecting the cathode to an electrochemical potential to cause reduction of the at least one oxidant gas.Type: ApplicationFiled: January 11, 2016Publication date: January 25, 2018Inventors: Xochitl Dominguez Benetton, Yolanda Alvarez Gallego, Christof Porto-Carrero, Katrijn Gijbels, Sunita Rajamani
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Publication number: 20170226647Abstract: A method produces hydrogen peroxide in an aqueous solution by electrochemical reduction of oxygen. An oxygen containing gas is supplied to an electrochemically active side of a cathode contained in a cathodic compartment. The cathode contains a porous gas diffusion electrode, one side of which contains a carbon based electrochemically active layer capable of catalyzing the reduction of oxygen to hydrogen peroxide. The cathodic compartment is in fluid communication with an anodic compartment. At least one at least partly water soluble, weak protonic electrolyte is supplied to a catholyte. The weak protonic electrolyte has a pKa which is at least one unit higher than the pH of the catholyte at the onset of the oxygen reduction reaction to hydrogen peroxide. The catholyte is not pH buffered and the pH of the catholyte is let to evolve in course of the reaction.Type: ApplicationFiled: August 5, 2015Publication date: August 10, 2017Inventors: Xochitl Dominguez BENETTON, Yolanda Alvarez GALLEGO
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Publication number: 20160010227Abstract: The present invention relates to a mesh-shaped, porous electric current density distributor for use with an electrode, the current density distributor being adapted for providing electric current to an active layer of the electrode, which active layer is provided to contact a face of the current density distributor, wherein the current density distributor comprises a porous mesh having a plurality of electrically conductive paths, wherein at least part of the electrically conductive paths extend along a direction of major current flow over the current density distributor. The porous mesh comprises in a direction crosswise to the direction of major electric current flow, a plurality of first paths of an electric insulator. The current carrying capacity of the current density distributor in crosswise direction to the major current flow over the current density distributor is smaller than the current carrying capacity in the direction along the major current flow over the current density distributor.Type: ApplicationFiled: February 26, 2014Publication date: January 14, 2016Inventors: Deepak Pant, Xochitl Dominguez Benetton,, Yolanda Alvarez Gallego, Bert Bouwman
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Patent number: 9105933Abstract: A process for producing a gas diffusion electrode comprising the steps of: casting a porous electrically conductive web with a suspension of particles of an electrically conductive material in a solution of a first binder to provide a first layer which is an electrochemically active layer (AL); casting a suspension of particles of a hydrophobic material in a solution of a second binder on said first layer to provide a second layer; and subjecting said first and second layer to phase inversion thereby realizing porosity in both said first layer and said second layer, wherein said subjection of said second layer to phase inversion thereby realizes a water repellent layer; a gas diffusion electrode obtained therewith; the use of a gas diffusion electrode in an membrane electrode assembly; a membrane electrode assembly comprising the gas diffusion electrode; and a method of producing a membrane electrode assembly is realized, said membrane electrode assembly comprising a membrane sandwiched between two electrodesType: GrantFiled: June 29, 2011Date of Patent: August 11, 2015Assignee: VITO NVInventors: Yolanda Alvarez Gallego, Philippe Vermeiren, Andre-Viktor Claes, Walter Adriansens
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Patent number: 8916586Abstract: A styrylquinoline derivative of structure I or IV or a benzodioxol isoquinoline of structure II or III for use in the treatment of an angiogenesis-related disease or disorder. The invention also provides a composition comprising a styrylquinoline derivative of structure I or IV or a benzodioxol isoquinoline of structure II or III for use as a medicament.Type: GrantFiled: January 16, 2012Date of Patent: December 23, 2014Assignee: University College Dublin—National University of Ireland, DublinInventors: Breandan Kennedy, Yolanda Alvarez, Jacintha O'Sullivan
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Publication number: 20130337368Abstract: An ion-permeable web-reinforced separator, said ion-permeable web-reinforced separator comprising two separator elements separated by an (optionally integrated) substantially hollow by-pass channel, wherein the separator elements each comprise a binder and a metal oxide or hydroxide dispersed therein and the separator elements have a bubble point of at least 1 bar (0.1 MPa) and a back-wash resistance of at least 1 bar (0.1 MPa) and optionally have a specific resistance less than 4 ?-cm at 30° C. in 6M potassium hydroxide solution; an electrochemical cell involving the production or consumption of at least one gas, said electrochemical cell comprising said ion-permeable web-reinforced separator; and the use thereof in an electrochemical cell involving the production or consumption of at least one gas.Type: ApplicationFiled: August 26, 2013Publication date: December 19, 2013Applicant: VITO NVInventors: Willy DOYEN, Yolanda Alvarez Gallego
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Publication number: 20130289066Abstract: A styrylquinoline derivative of structure I or IV or a benzodioxol isoquinoline of structure II or III for use in the treatment of an angiogenesis-related disease or disorder. The invention also provides a composition comprising a styrylquinoline derivative of structure I or IV or a benzodioxol isoquinoline of structure II or III for use as a medicament.Type: ApplicationFiled: January 16, 2012Publication date: October 31, 2013Inventors: Breandan Kennedy, Yolanda Alvarez, Jacintha O'Sullivan
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Publication number: 20130101906Abstract: A process for producing a gas diffusion electrode comprising the steps of: casting a porous electrically conductive web with a suspension of particles of an electrically conductive material in a solution of a first binder to provide a first layer which is an electrochemically active layer (AL); casting a suspension of particles of a hydrophobic material in a solution of a second binder on said first layer to provide a second layer; and subjecting said first and second layer to phase inversion thereby realising porosity in both said first layer and said second layer, wherein said subjection of said second layer to phase inversion thereby realises a water repellent layer; a gas diffusion electrode obtained therewith; the use of a gas diffusion electrode in an membrane electrode assembly; a membrane electrode assembly comprising the gas diffusion electrode; and a method of producing a membrane electrode assembly is realised, said membrane electrode assembly comprising a membrane sandwiched between two electrodesType: ApplicationFiled: June 29, 2011Publication date: April 25, 2013Applicant: VITO NVInventors: Yolanda Alvarez Gallego, Philippe Vermeiren, Andre-Viktor Claes, Walter Adriansens
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Patent number: 6869715Abstract: An ion conductive membrane for electrochemical applications is provided for forming the membrane on the basis of a polyimide or copolyimide polymer, which contains in its structure heterocyclic groups, particularly in the form of imidazole-, pyridin or pyrimidin groups. The electrochemical applications include particularly the use of such membranes in fuel cells.Type: GrantFiled: November 23, 2002Date of Patent: March 22, 2005Assignee: GKSS-Forschungszentrum Geesthacht, GmbHInventors: Yolanda Alvarez-Gallego, Suzana Pereira Nunes, Kai Jakoby, Javier de Abajo
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Publication number: 20040101732Abstract: An ion conductive membrane for electrochemical applications is provided for forming the membrane on the basis of a polyimide or copolyimide polymer, which contains in its structure heterocyclic groups, particularly in the form of imidazole-, pyridin or pyrimidin groups. The electrochemical applications include particularly the use of such membranes in fuel cells.Type: ApplicationFiled: November 23, 2002Publication date: May 27, 2004Inventors: Yolanda Alvarez-Gallego, Suzana Pereira Nunes, Kai Jakoby, J. Abajo