Patents by Inventor Manfred Stefener
Manfred Stefener 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).
-
Patent number: 9299991Abstract: A process for the electrochemical deposition of nanoscale catalyst particles using a sacrificial hydrogen anode as counter electrode for the working electrode is disclosed, whereby a concurrent development of hydrogen at the working electrode is mostly or completely avoided.Type: GrantFiled: February 25, 2013Date of Patent: March 29, 2016Assignee: Universitat des SaarlandesInventors: Jens Mitzel, Rolf Hempelmann, Vivien Annel, Harald Natter, Manfred Stefener
-
Patent number: 7757731Abstract: The invention relates to an adapter cartridge for supplying fuel to a device set up for fuel cartridge operation alternatively to the fuel cartridges, also by means of an external tank or an external supply pipe. The adapter cartridge comprises a fuel feed device and an interface on the load side for releasing the fuel, which is formed according to the corresponding interface of the fuel cartridge.Type: GrantFiled: March 31, 2003Date of Patent: July 20, 2010Assignee: SFC Smart Fuel Cell AGInventors: Jens Müller, Manfred Stefener
-
Publication number: 20100009234Abstract: A method for producing a catalyst layer (1) for fuel cells, chemical or electrochemical reactors using a precursor layer, which comprises a plurality of electrically conductive precursor particles (3, 4), a catalyst (2) being electrochemically deposited, the catalyst layer (1) being produced as a structured layer. This is achieved by the targeted inhomogeneous selection of the precursor particles (3, 4) with regard to at least one particle property, by the addition of non-conductive particles and/or at least one chemical additive to the precursor layer, and/or in that significant amounts of gas are produced in the catalyst layer or conveyed through said layer before, during, or after the electrochemical deposition.Type: ApplicationFiled: August 26, 2009Publication date: January 14, 2010Applicant: ELCOMAX GMBHInventor: Manfred Stefener
-
Patent number: 7572323Abstract: The invention relates to a fluid separating device with a lower section with a fluid feeding device and a liquid discharging device, an upper section with a fluid feeding device and a gas discharging device, a contact device which is constructed in such a manner that gas, which rises from the lower section into the upper section, comes into contact with liquid which sinks from the upper section into the lower section. Thereby, the rising gases can be depleted of components which are soluble in said liquid. Furthermore, a measuring device for determining the quantity of liquid and/or the alterations thereof is provided.Type: GrantFiled: May 19, 2003Date of Patent: August 11, 2009Assignee: SFC Smart Fuel Cell AGInventors: Jens Müller, Volker Harbusch, Markus Huber, Christian Böhm, Kurt Rothkopf, Manfred Stefener
-
Patent number: 7435505Abstract: The invention refers to a fuel cell device comprising an electrolyte device, which comprises an alkaline electrolyte means and an acid electrolyte means, wherein the fuel cell device is formed such that at least part of at last one reaction product produced at the electrolyte means can be supplied to the other electrolyte means. Moreover, the invention comprises a method of operating a fuel cell device, which includes the following steps: providing an alkaline electrolyte means and an acid electrolyte means, supplying at least one fuel and at least one oxidant, discharging reaction products, wherein at least part of at least one reaction product produced at an electrolyte means is supplied to the other electrolyte means.Type: GrantFiled: August 12, 2002Date of Patent: October 14, 2008Assignee: SFC Smart Fuel Cell AGInventors: Manfred Stefener, Jens Müller
-
Publication number: 20060260715Abstract: The invention relates to an adapter cartridge for supplying fuel to a device set up for fuel cartridge operation alternatively to the fuel cartridges, also by means of an external tank or an external supply pipe. The adapter cartridge comprises a fuel feed device and an interface on the load side for releasing the fuel, which is formed according to the corresponding interface of the fuel cartridge.Type: ApplicationFiled: March 31, 2003Publication date: November 23, 2006Inventors: Jens Muller, Manfred Stefener
-
Publication number: 20060229764Abstract: The present invention relates to a method for monitoring the amount of fluid in a fluid container, wherein the amount of fluid contained in the fluid container is determined at a first moment in time, said step comprising reading out information provided on the fluid container, and wherein, at a second moment in time, the amount of fluid is determined that has been removed between said first and second moments in time, and wherein at least one quantity is stored, which is representative of the amount of fluid contained in the fluid container at said second moment in time. Furthermore, the invention relates to a fluid container comprising an information storage means which is adapted to have stored therein the amount of fluid contained in the fluid container or at least one other quantity that is representative of the amount of fluid contained in the fluid container. The invention additionally relates to a system for using such fluid containers.Type: ApplicationFiled: July 30, 2003Publication date: October 12, 2006Applicant: SFC SMART FUEL CELL AGInventors: Manfred Stefener, Jens Muller, Oliver Freitag, Kurt Rothkoof
-
Publication number: 20060088753Abstract: The invention relates to a sealing frame (50) for fuel cell stacks having an alternating arrangement of flow plates (10) and electrolytic facilities (20) and cathode and anode regions formed between the flow plates (10) and the electrolytic facilities (20), wherein the sealing frame (50) is formed such that it is suited for installation between the flow plates (10) and ensures the mutual sealing of the cathode regions and the anode regions,Type: ApplicationFiled: January 15, 2003Publication date: April 27, 2006Inventors: Manfred Stefener, Christian Bohm, Markus Huber, Volker Harbusch
-
Publication number: 20060088751Abstract: The present invention relates in general to mains-independent power supply and in particular to a housing for a mobile power supply device, wherein there are provided at least one housing section for accommodating at least one fuel cell device, at least one housing section for accommodating at least one electric consumer, and at least one housing section for installing a fuel tank or for insertion of a replaceable fuel cartridge.Type: ApplicationFiled: December 9, 2002Publication date: April 27, 2006Inventors: Manfred Stefener, Jens Muller, Oliver Freitag
-
Publication number: 20060081130Abstract: The invention relates to a fluid separating device with a lower section with a fluid feeding device and a liquid discharging device, an upper section with a fluid feeding device and a gas discharging device, a contact device which is constructed in such a manner that gas, which rises from the lower section into the upper section, comes into contact with liquid which sinks from the upper section into the lower section. Thereby, the rising gases can be depleted of components which are soluble in said liquid. Furthermore, a measuring device for determining the quantity of liquid and/or the alterations thereof is provided.Type: ApplicationFiled: May 19, 2003Publication date: April 20, 2006Applicant: SFC SMART FUEL CELL AGInventors: Jens Muller, Volker Harbusch, Markus Huber, Christian Bohm, Kurt Rothkopf, Manfred Stefener
-
Publication number: 20050162832Abstract: The invention relates to heat dissipation with devices with an internal energy supply device. A housing device for an electrical load and an energy supply device are provided, especially a laptop housing, having a device for heat dissipation in order to transport the heat generated by the energy supply device by means of at least one flowing medium to at least one outer surface of the housing device and to discharge it via the outer surface.Type: ApplicationFiled: March 28, 2003Publication date: July 28, 2005Inventors: Jens Muller, Manfred Stefener, Marcus Preissner
-
Publication number: 20050069757Abstract: The invention refers to a fuel cell device comprising an electrolyte device, which comprises an alkaline electrolyte means and an acid electrolyte means, wherein the fuel cell device is formed such that at least part of at last one reaction product produced at the electrolyte means can be supplied to the other electrolyte means. Moreover, the invention comprises a method of operating a fuel cell device, which includes the following steps: providing an alkaline electrolyte means and an acid electrolyte means, supplying at least one fuel and at least one oxidant, discharging reaction products, wherein at least part of at least one reaction product produced at an electrolyte means is supplied to the other electrolyte means.Type: ApplicationFiled: August 12, 2002Publication date: March 31, 2005Inventors: Manfred Stefener, Jens Muller