Patents by Inventor Leif Hojslet Christensen
Leif Hojslet Christensen 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: 11777123Abstract: A direct alcohol fuel cell having a proton exchange membrane (PEM) separating an anode section from a cathode section, which cathode section contains a cathode collection element electrically connected to a cathode catalyst, the cathode catalyst being in diffusive communication with a gaseous oxidant, and which anode section comprises an anode collection element electrically connected to an anode catalyst. The anode catalyst is in diffusive communication with a fuel supply. The PEM is structured to have a bottom and walls extending from the bottom to a containment distance into the cathode section, and the cathode catalyst is located within the containment distance from the bottom. The fuel cell is suited for a microelectronic device.Type: GrantFiled: December 3, 2019Date of Patent: October 3, 2023Assignee: Widex A/SInventors: Torsten Lund-Olesen, Kasper Vestentoft, Oskar Tynelius, Jacob Lindner Bonde, Jan Harry Hales, Leif Hojslet Christensen
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Patent number: 11699798Abstract: A direct alcohol fuel cell having an inner housing, and a proton exchange membrane separating an anode section from a cathode section. The anode section contains an anode collection element electrically connected to an anode catalyst that is in diffusive communication with a fuel supply. The cathode section contains a cathode collection element having one or more ventilation holes is electrically connected to a cathode catalyst. An oleophobic filter and/or an anion-exchange membrane is provided, which cathode catalyst via the one or more ventilation holes and the oleophobic filter and/or the anion-exchange membrane is in diffusive communication with a gaseous oxidant. The inner housing has a bottom and walls extending from the bottom to contain the anode section, the PEM and the cathode section, the bottom and/or the walls having holes allowing fluid communication from a fuel supply to the anode section. The fuel cell is suited for microelectronic devices.Type: GrantFiled: December 3, 2019Date of Patent: July 11, 2023Assignee: Widex A/SInventors: Torsten Lund-Olesen, Kasper Vestentoft, Oskar Tynelius, Jacob Lindner Bonde, Jan Harry Hales, Leif Hojslet Christensen
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Publication number: 20220029186Abstract: The present invention relates to a direct alcohol fuel cell comprising a housing containing a proton exchange membrane (PEM) separating an anode section from a cathode section, which anode section and which cathode section are contained in the housing, the cathode section comprising a cathode collection element electrically connected to a cathode catalyst, which cathode catalyst is in diffusive communication with a gaseous oxidant, and the anode section comprising an anode collection element electrically connected to an anode catalyst, and a pervaporation membrane located at a spacing distance from the PEM, which pervaporation membrane provides diffusive communication between the anode catalyst and a fuel supply, wherein the housing comprises one or more venting holes providing fluid communication between the anode section and the ambient environment, which venting hole has or which venting holes have a largest dimension in the range of 25 ?m to 300 ?m, the venting hole being located within the spacing distanType: ApplicationFiled: December 3, 2019Publication date: January 27, 2022Applicant: Widex A/SInventors: Torsten LUND-OLESEN, Kasper VESTENTOFT, Oskar TYNELIUS, Jacob Lindner BONDE, Jan Harry HALES, Leif Hojslet CHRISTENSEN
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Publication number: 20220021013Abstract: A direct alcohol fuel cell having a proton exchange membrane (PEM) separating an anode section from a cathode section, which cathode section contains a cathode collection element electrically connected to a cathode catalyst, the cathode catalyst being in diffusive communication with a gaseous oxidant, and which anode section comprises an anode collection element electrically connected to an anode catalyst. The anode catalyst is in diffusive communication with a fuel supply. The PEM is structured to have a bottom and walls extending from the bottom to a containment distance into the cathode section, and the cathode catalyst is located within the containment distance from the bottom. The fuel cell is suited for a microelectronic device.Type: ApplicationFiled: December 3, 2019Publication date: January 20, 2022Applicant: Widex A/SInventors: Torsten LUND-OLESEN, Kasper VESTENTOFT, Oskar TYNELIUS, Jacob Lindner BONDE, Jan Harry HALES, Leif Hojslet CHRISTENSEN
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Publication number: 20210359314Abstract: A direct alcohol fuel cell having an inner housing, and a proton exchange membrane separating an anode section from a cathode section. The anode section contains an anode collection element electrically connected to an anode catalyst that is in diffusive communication with a fuel supply. The cathode section contains a cathode collection element having one or more ventilation holes is electrically connected to a cathode catalyst. An oleophobic filter and/or an anion-exchange membrane is provided, which cathode catalyst via the one or more ventilation holes and the oleophobic filter and/or the anion-exchange membrane is in diffusive communication with a gaseous oxidant. The inner housing has a bottom and walls extending from the bottom to contain the anode section, the PEM and the cathode section, the bottom and/or the walls having holes allowing fluid communication from a fuel supply to the anode section. The fuel cell is suited for microelectronic devices.Type: ApplicationFiled: December 3, 2019Publication date: November 18, 2021Applicant: Widex A/SInventors: Torsten LUND-OLESEN, Kasper VESTENTOFT, Oskar TYNELIUS, Jacob Lindner BONDE, Jan Harry HALES, Leif Hojslet CHRISTENSEN
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Patent number: 10195590Abstract: A method of preparing a catalytic structure the method including the steps of: providing a solution of a precursor compound in a solvent at ambient conditions; providing a suspension of a support material having a specific surface area of at least 1 m2/g in a solvent at ambient conditions; mixing the solution of the precursor compound and the suspension of the support material; providing a reactive solvent in a supercritical or subcritical state; admixing the mixture of the solution of the precursor compound and the suspension of the support material in the supercritical or subcritical reactive solvent to form a reaction solution; injecting the reaction solution into a reactor tube via an inlet; allowing a reaction of the precursor compound in the supercritical or subcritical reactive solvent in the reactor tube to form the catalyst nanoparticles on the support material to provide the catalytic structure.Type: GrantFiled: July 5, 2013Date of Patent: February 5, 2019Assignee: TEKNOLOGISK INSTITUTInventors: Christian Kallesøe, Henrik Fanø Clausen, Leif Højslet Christensen, Torsten Lund-Olesen, Mohammad Aref Hasen Mamakhel, Bo Brummerstedt Iversen, Jacob Becker-Christensen, David Friis Aarup, Jan Hales
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Publication number: 20150202598Abstract: A method of preparing a catalytic structure the method including the steps of: providing a solution of a precursor compound in a solvent at ambient conditions; providing a suspension of a support material having a specific surface area of at least 1 m2/g in a solvent at ambient conditions; mixing the solution of the precursor compound and the suspension of the support material; providing a reactive solvent in a supercritical or subcritical state; admixing the mixture of the solution of the precursor compound and the suspension of the support material in the supercritical or subcritical reactive solvent to form a reaction solution; injecting the reaction solution into a reactor tube via an inlet; allowing a reaction of the precursor compound in the supercritical or subcritical reactive solvent in the reactor tube to form the catalyst nanoparticles on the support material to provide the catalytic structure.Type: ApplicationFiled: July 5, 2013Publication date: July 23, 2015Inventors: Christian Kallesøe, Henrik Fano Clausen, Leif Hojslet Christensen, Torsten Lund-Olesen, Mohammed Aref Hasen Mamakhe, Bo Brummerstedt Iversen, Jacob Becker-Christensen, David Friss Aarup, Jan Hales
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Patent number: 8763238Abstract: A hearing aid (8) comprises an inlet port (6), a sound tube (12) for conveying sound to the ear piece (13). The invention further provides a component for a hearing aid comprising a slab (26) having an exterior surface, which is super-hydrophobic. The component may be any one of a housing, a casing, a shell, a faceplate, a grid, a hook, a lid, a battery drawer, a button, or a manipulator. The invention also provides a method of manufacturing a component for a hearing aid.Type: GrantFiled: July 1, 2009Date of Patent: July 1, 2014Assignee: Widex A/SInventors: Jorn Eiler Vestergaard, Jorgen Mejner Olsen, Leif Hojslet Christensen, Kenneth Brian Haugshoj, Martin Frohling Jensen, Kasper Vestentoft
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Publication number: 20140147771Abstract: A fuel cell for a portable electronic device having a liquid fuel reservoir (100) wherein at least a part of the inner surface (103) and a part of an outer surface (104) of the fuel reservoir wall (102) are gas permeable, wherein said wall is adapted such that the area of the open parts of the inner surface (103) of the wall is larger than the area of the open parts of said outer surface (104) of the wall, wherein said wall is porous and adapted to allow gas to enter said wall and to be transported along said wall in a direction substantially parallel with the plane of the wall and to leave said wall, and wherein said wall is adapted such that the inner surface is hydrophobic. The invention further provides a portable electronic device and a method of manufacturing a liquid fuel reservoir.Type: ApplicationFiled: July 13, 2011Publication date: May 29, 2014Applicant: TEKNOLOGISK INSTITUTInventors: Torsten Lund-Olesen, Christian Kallesoee, Jan Harry Hales, Leif Højslet Christensen
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Patent number: 8295522Abstract: A hearing aid (1) comprises a receiver (19), an output port (6), a conduit (13) for conveying sound to the port and a barrier element (39) adapted for baffling entry of ear wax and moisture and for being acoustically transparent. The invention further provides a barrier element (39) for a hearing aid comprising a slab having an exterior surface and through openings for transverse transmission of sound, wherein the exterior surface is super-hydrophobic.Type: GrantFiled: February 12, 2009Date of Patent: October 23, 2012Assignee: Widex A/SInventors: Jorn Eiler Vestergaard, Jorgen Mejner Olsen, Leif Hojslet Christensen, Kenneth B. Haugshoj
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Publication number: 20120163643Abstract: A hearing aid (1) comprises a receiver (19), an output port (6), a conduit (13) for conveying sound to the port and a barrier element (39) adapted for baffling entry of ear wax and moisture and for being acoustically transparent. The invention further provides a barrier element (39) for a hearing aid comprising a slab having an exterior surface and through openings for transverse transmission of sound, wherein the exterior surface is super-hydrophobic.Type: ApplicationFiled: March 9, 2012Publication date: June 28, 2012Applicant: WIDEX A/SInventors: Jorn Eiler Vestergaard, Jorgen Mejner Olsen, Leif Hojslet Christensen, Kenneth B. Haugshoj
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Publication number: 20110110544Abstract: A method for coating of a hearing aid said method comprising the deposition of an adhesion layer that does not develop corrosive reaction products. The method comprises applying an organometallic compound to the surface of the hearing aid component using vapour phase deposition, inducing a reaction to convert it to a metal oxide, then applying a silane molecule to the surface, and inducing a reaction between the applied silane molecule and the metal oxide. The invention also relates to a hearing aid comprising a component for a hearing aid provided with a hydrophobic coating comprising a layer of aluminium oxide, and a coating for a hearing aid component. The coating is produced in a system (701) for vapour phase deposition of precursors.Type: ApplicationFiled: January 14, 2011Publication date: May 12, 2011Applicant: Widex A/SInventors: Jorn Eiler VESTERGAARD, Jorgen Mejner OLSEN, Kenneth Brian HAUGSHOJ, Leif Hojslet CHRISTENSEN, Tina Ahlberg LARSEN
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Publication number: 20090262966Abstract: A hearing aid (8) comprises an inlet port (6), a sound tube (12) for conveying sound to the ear piece (13). The invention further provides a component for a hearing aid comprising a slab (26) having an exterior surface, which is super-hydrophobic. The component may be any one of a housing, a casing, a shell, a faceplate, a grid, a hook, a lid, a battery drawer, a button, or a manipulator. The invention also provides a method of manufacturing a component for a hearing aid.Type: ApplicationFiled: July 1, 2009Publication date: October 22, 2009Applicant: Widex A/SInventors: Jorn Eiler Vestergaard, Jorgen Mejner Olsen, Leif Hojslet Christensen, Kenneth Brian Haugshoj, Martin Frohling Jensen, Kasper Vestentoft
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Publication number: 20090154747Abstract: A hearing aid (1) comprises a receiver (19), an output port (6), a conduit (13) for conveying sound to the port and a barrier element (39) adapted for baffling entry of ear wax and moisture and for being acoustically transparent. The invention further provides a barrier element (39) for a hearing aid comprising a slab having an exterior surface and through openings for transverse transmission of sound, wherein the exterior surface is super-hydrophobic.Type: ApplicationFiled: February 12, 2009Publication date: June 18, 2009Applicant: Widex A/SInventors: Jorn Eiler VESTERGAARD, Jorgen Mejner Olsen, Leif Hojslet Christensen, Kenneth B. Haugshoj