Patents by Inventor Claus Würfel
Claus Würfel 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: 10053785Abstract: A method for operating an electrolysis device (2) for producing hydrogen uses a water circuit. Water from a polymer electrolyte membrane (PEM) electrolyzer (6) is cooled in a cooling device (10) and subsequently led to an ion exchanger (4) for processing the water. The water, after the processing in the ion exchanger (4), is fed to the PEM electrolyzer (6). Heat is removed from the water before feeding the water to the cooling device (10). A part of this removed heat is fed again to the water after the processing in the ion exchanger (4) and before entry into the PEM electrolyzer (6).Type: GrantFiled: April 14, 2014Date of Patent: August 21, 2018Assignee: H-TEC SYSTEMS GmbHInventors: Svetlana Smarsch, Nils Mantai, Norbert Bülow, Claus Würfel, Dennis Wilken, Uwe Küter, Stefan Höller
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Patent number: 9790092Abstract: A method is provided for running up/starting up an electrolysis device (10), which device includes a reactor container (3) which is arranged downstream of an electrolyzer (1) and in which oxygen reacts with hydrogen into water, in order to reduce an oxygen share in a hydrogen gas flow coming from the electrolyzer (1). The electrolysis device (10) is operated with a predefined operating pressure. Upon running up/starting up the electrolyzer (1), the hydrogen gas flow coming from the electrolyzer (1) is led past the reactor container (3) via a bypass conduit (11).Type: GrantFiled: December 19, 2012Date of Patent: October 17, 2017Assignee: H-TEC SYSTEMS GMBHInventors: Nils Mantai, Claus Würfel, Dennis Wilken, Uwe Küter, Stefan Höller
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Publication number: 20160068975Abstract: A method for operating an electrolysis device (2) for producing hydrogen uses a water circuit. Water from a polymer electrolyte membrane (PEM) electrolyzer (6) is cooled in a cooling device (10) and subsequently led to an ion exchanger (4) for processing the water. The water, after the processing in the ion exchanger (4), is fed to the PEM electrolyzer (6). Heat is removed from the water before feeding the water to the cooling device (10). A part of this removed heat is fed again to the water after the processing in the ion exchanger (4) and before entry into the PEM electrolyzer (6).Type: ApplicationFiled: April 14, 2014Publication date: March 10, 2016Inventors: Svetlana SMARSCH, Nils MANTAI, Norbert BÜLOW, Claus WÜRFEL, Dennis WILKEN, Uwe KÜTER, Stefan HÖLLER
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Publication number: 20150021170Abstract: An electrolysis device (7) includes a water circuit (6), in which an electrolyzer (5), a collection container (1) and at least one pump (2) are arranged. The water is pumped by way of the at least one pump (2) out of the collection container (1) to the electrolyzer (5). The water circuit (6) is branched into at least one first branch (8) and into a second branch (9) which is parallel to the first branch (8). The electrolyzer (5) is arranged in the first branch (8) and a heat exchanger (3), for cooling the water, is arranged in the second branch (9).Type: ApplicationFiled: December 18, 2012Publication date: January 22, 2015Applicant: H-TEC SYSTEMS GmbHInventors: Dennis Wilken, Nils Mantai, Claus Würfel, Uwe Küter, Stefan Höller
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Publication number: 20150001067Abstract: An electrolyzer (2) includes at least one electrolysis cell (4), arranged between two end plates (6.8), in a polymer electrolyte membrane construction manner, and a pressing device for producing a pressing force between the end plates (6.8). The pressing force at least partly is controlled in a manner dependent on the gas pressure produced by the electrolysis cell (4).Type: ApplicationFiled: December 18, 2012Publication date: January 1, 2015Applicant: H-TEC SYSTEMS GmbHInventors: Nils Mantai, Claus Würfel, Dennis Wilken, Uwe Küter, Stefan Höller
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Publication number: 20140377167Abstract: A method is provided for running up/starting up an electrolysis device (10), which device includes a reactor container (3) which is arranged downstream of an electrolyzer (1) and in which oxygen reacts with hydrogen into water, in order to reduce an oxygen share in a hydrogen gas flow coming from the electrolyzer (1). The electrolysis device (10) is operated with a predefined operating pressure. Upon running up/starting up the electrolyzer (1), the hydrogen gas flow coming from the electrolyzer (1) is led past the reactor container (3) via a bypass conduit (11).Type: ApplicationFiled: December 19, 2012Publication date: December 25, 2014Applicant: H-TEC SYSTEMS GmbHInventors: Nils Mantai, Claus Würfel, Dennis Wilken, Uwe Küter, Stefan Höller
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Patent number: 8908895Abstract: The invention regards an ear canal device and a retainer strip, whereby the ear canal device has a distal part for extending into the ear canal and facing the tympanic membrane and a proximal part extending towards the ear canal opening, wherein the proximal part of the ear canal device comprises an opening extending transversely through the ear canal device, and where a retaining strip is arranged with a first end thereof arranged to be fastened in the opening and a second end arranged to lie resiliently against the inside of the concha for exerting a retaining force on the ear canal device.Type: GrantFiled: March 21, 2012Date of Patent: December 9, 2014Assignee: Oticon A/SInventor: Claus Würfel
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Publication number: 20130032472Abstract: An apparatus for the electrical production of hydrogen from water includes an electrolyzer (1) of the PEM type. The electrolyzer (1) has an inlet (2) for the introduction of water and a first outlet (3) for the hydrogen which is enriched with water and/or water vapor and is produced in the electrolyzer (1) and also a second outlet (4) for oxygen. A water separation device (7) which has at least a thermal separation stage (10) adjoins the electrolyzer (1).Type: ApplicationFiled: April 14, 2011Publication date: February 7, 2013Inventors: Stefan Höller, Freimut Gädeke, Claus Würfel, Nils Mantal, Uwe Küter
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Patent number: 8290187Abstract: This invention relates to a hearing device and earpiece therefore. The hearing device comprises a BTE unit for converting and processing sound to an electrical signal and a tubular element communicating the electrical signal to an earpiece. The earpiece comprises a canal element providing a tight fit of the earpiece in an ear canal, and a speaker element rotate-ably mounted in the canal element.Type: GrantFiled: September 28, 2007Date of Patent: October 16, 2012Assignee: Oticon A/SInventors: Klaus L. Svendsen, Claus Würfel, Jesper Trolle
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Publication number: 20120177242Abstract: The invention regards an ear canal device and a retainer strip, whereby the ear canal device has a distal part for extending into the ear canal and facing the tympanic membrane and a proximal part extending towards the ear canal opening, wherein the proximal part of the ear canal device comprises an opening extending transversely through the ear canal device, and where a retaining strip is arranged with a first end thereof arranged to be fastened in the opening and a second end arranged to lie resiliently against the inside of the concha for exerting a retaining force on the ear canal device.Type: ApplicationFiled: March 21, 2012Publication date: July 12, 2012Inventor: Claus WÜRFEL
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Patent number: 8184841Abstract: The invention regards an ear canal device and a retainer strip, whereby the ear canal device has a distal part for extending into the ear canal and facing the tympanic membrane and a proximal part extending towards the ear canal opening, wherein the proximal part of the ear canal device comprises an opening extending transversely through the ear canal device, and where a retaining strip is arranged with a first end thereof arranged to be fastened in the opening and a second end arranged to lie resiliently against the inside of the concha for exerting a retaining force on the ear canal device.Type: GrantFiled: January 16, 2007Date of Patent: May 22, 2012Assignee: Oticon A/SInventor: Claus Würfel
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Publication number: 20110194717Abstract: Hearing aid or audio device having a behind the ear part adapted to rest behind an earlobe of a user and a speaker unit comprising a speaker, whereby the speaker unit is adapted for insertion into the ear of a user, and whereby electric leads are provided between the speaker unit and the behind the ear part, said leads having a connection part opposite the speaker unit for connection with a corresponding socket in the behind the ear part, wherein the exterior and visible parts of the behind the ear part are defined by a generally U-shaped shell element, a battery drawer and a microphone cover plate characterized in that all further inside parts of the behind the ear part are interconnected to form a single sub-assembly and in that said sub-assembly is releasably coupled to the U-shaped shell element between two upright walls thereof by latch-locks provided to interact between the microphone cover plate and the upright wall elementsType: ApplicationFiled: September 26, 2008Publication date: August 11, 2011Applicant: OTICON A/SInventors: Jacob Holdt Hansen, Jan T.L. Larsen, Jakob Sandholt Klemmensen, Kenneth Rueskov Moller, Carl Christian Nielsen, Christian Nielsen, Morten Kjaer Petersen, Jakob Hager Rasmussen, Soren Wichmann, Claus Würfel