Patents by Inventor Tomas Stefanovski

Tomas Stefanovski 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: 7494517
    Abstract: A device for the catalytic generation of hydrogen from hydrocarbons includes a catalytic converter having feed and distribution channels for starting materials and discharge and collection manifolds for products. The feed and distribution channels and the discharge and collection manifolds are formed from a plurality of identically structured channels. Inlet channels for supplying and distributing starting materials and outlet channels for collecting and discharging products are defined by, in each case, inversely arranged closed and open channel ends. The inlet and outlet channels extend substantially across the entire catalytic converter and are provided in an alternately intermeshing arrangement.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: February 24, 2009
    Assignee: NuCellSys GmbH
    Inventors: Johanna Bass, Roland Cwik, Tomas Stefanovski
  • Patent number: 7378066
    Abstract: To carry out a heterogeneously catalyzed reaction, a reaction mixture comprising hydrocarbon and water is fed onto a catalyst that is produced by compressing at least one catalyst powder into a highly compressed layer which forms a shaped body. The reaction mixture is pressed through the catalyst layer with a pressure drop.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: May 27, 2008
    Assignee: NuCellSys GmbH
    Inventors: Martin Schuessler, Tomas Stefanovski, Detlef Zur Megede
  • Patent number: 7147836
    Abstract: A device having a plurality of chambers for carrying out a solid-catalyzed reaction includes a common evaporation unit for evaporating liquid starting materials. The evaporation unit is in thermally conductive contact with a plurality of chambers. An area of the evaporation unit in which the evaporation substantially takes place is at least partially surrounded by the plurality of chambers.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: December 12, 2006
    Assignee: NuCellSys GmbH
    Inventors: Andreas Ebert, Oskar Lamla, Martin Schuessler, Tomas Stefanovski
  • Patent number: 7056361
    Abstract: The invention relates to a device for generating a hydrogen-rich gas from a liquid, hydrogen-containing fuel using a reforming reaction, having feed lines for supplying starting materials and having discharge lines for discharging the reformate, having at least one component for evaporating liquid starting materials, having at least one component for reforming, having at least one component for the catalytic generation of thermal energy, and having at least one component for reducing the carbon monoxide fraction in the reformate, in which device at least two of the components are arranged on a common plate, which comprises a porous layer formed by pressing catalyst material, the reaction starting materials flowing over and/or through the layer.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: June 6, 2006
    Assignee: NuCellSys GmbH
    Inventors: Andreas Ebert, Markus Portscher, Martin Schüssler, Alexandra Hassert, Ralf Heuser, Oskar Lamla, Tomas Stefanovski
  • Patent number: 7001575
    Abstract: A device feeds educts to parallel spaces separated from one another by way of a distributor unit. Outlets of the distributor unit are assigned to the spaces, and evaporator structures for the evaporation of liquid media are provided in the spaces. Each outlet of the distributor unit project into a space. The boiling point of the medium in the distributor unit is maintained above the temperature of the medium in the distributor unit.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: February 21, 2006
    Assignee: NuCellSys GmbH
    Inventors: Roland Cwik, Andreas Ebert, Oskar Lamla, Bruno Motzet, Martin Schuessler, Tomas Stefanovski, Alois Tischler, Marc Weisser
  • Publication number: 20050267225
    Abstract: A device having a plurality of chambers for carrying out a solid-catalyzed reaction includes a common evaporation unit for evaporating liquid starting materials. The evaporation unit is in thermally conductive contact with a plurality of chambers. An area of the evaporation unit in which the evaporation substantially takes place is at least partially surrounded by the plurality of chambers.
    Type: Application
    Filed: August 2, 2005
    Publication date: December 1, 2005
    Applicant: BALLARD POWER SYSTEMS AG
    Inventors: Andreas Ebert, Oskar Lamla, Martin Schussler, Tomas Stefanovski
  • Patent number: 6949229
    Abstract: A device having a plurality of chambers for carrying out a solid-catalyzed reaction includes a common evaporation unit for evaporating liquid starting materials. The evaporation unit is in thermally conductive contact with a plurality of chambers. An area of the evaporation unit in which the evaporation substantially takes place is at least partially surrounded by the plurality of chambers.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: September 27, 2005
    Assignee: Ballard Power Systems AG
    Inventors: Andreas Ebert, Oskar Lamla, Martin Schüssler, Tomas Stefanovski
  • Publication number: 20050187101
    Abstract: A device for the catalytic generation of hydrogen from hydrocarbons includes a catalytic converter having feed and distribution channels for starting materials and discharge and collection manifolds for products. The feed and distribution channels and the discharge and collection manifolds are formed from a plurality of identically structured channels. Inlet channels for supplying and distributing starting materials and outlet channels for collecting and discharging products are defined by, in each case, inversely arranged closed and open channel ends. The inlet and outlet channels extend substantially across the entire catalytic converter and are provided in an alternately intermeshing arrangement.
    Type: Application
    Filed: April 15, 2005
    Publication date: August 25, 2005
    Applicant: Ballard Power Systems AG
    Inventors: Joanna Bass, Roland Cwik, Tomas Stefanovski
  • Patent number: 6932948
    Abstract: A device for the catalytic generation of hydrogen from hydrocarbons includes a catalytic converter having feed and distribution channels for starting materials and discharge and collection manifolds for products. The feed and distribution channels and the discharge and collection manifolds are formed from a plurality of identically structured channels. Inlet channels for supplying and distributing starting materials and outlet channels for collecting and discharging products are defined by, in each case, inversely arranged closed and open channel ends. The inlet and outlet channels extend substantially across the entire catalytic converter and are provided in an alternately intermeshing arrangement.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: August 23, 2005
    Assignee: Ballard Power Systems AG
    Inventors: Joanna Bass, Roland Cwik, Tomas Stefanovski
  • Patent number: 6660685
    Abstract: To carry out a heterogeneously catalysed reaction, a reaction mixture comprising hydrocarbon and water is fed onto a catalyst that is produced by compressing at least one catalyst powder into a highly compressed layer which forms a shaped body. The reaction mixture is pressed through the catalyst layer with a pressure drop.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: December 9, 2003
    Assignee: Ballard Power Systems AG
    Inventors: Martin Schüssler, Tomas Stefanovski, Detlef zur Megede
  • Patent number: 6644246
    Abstract: A device for evaporating liquids includes a porous, thermally conductive evaporation body, which contains a catalyst material on one surface, while the evaporation body is gas-impermeable on the opposite surface. Liquid which is to be evaporated and, if appropriate an additional fuel, can be fed to the evaporation body. The heat of evaporation required is provided by an exothermic reaction of the liquid or with a gaseous oxidizing agent at the catalyst material.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: November 11, 2003
    Assignee: Ballard Power Systems AG
    Inventors: Roland Cwik, Andreas Ebert, Oskar Lamla, Martin Schuessler, Tomas Stefanovski
  • Publication number: 20030203814
    Abstract: To carry out a heterogeneously catalysed reaction, such as for example the generation of hydrogen from hydrocarbons or alcohol, in particular methanol, in which a reaction mixture comprising hydrocarbon and water is fed onto a catalyst, a catalyst is proposed which is produced by compressing at least one catalyst powder into a highly compressed layer which forms a shaped body, it being possible to press the reaction mixture through the catalyst layer with a pressure drop.
    Type: Application
    Filed: May 15, 2003
    Publication date: October 30, 2003
    Applicant: Ballard Power Systems, Inc.
    Inventors: Martin Schussler, Tomas Stefanovski, Detlef Zur Megede
  • Patent number: 6517805
    Abstract: An apparatus for producing hydrogen from hydrocarbons or alcohol, particularly methanol, by feeding a reaction mixture comprising a hydrocarbon or alcohol and water onto a catalyst. The catalyst is formed by compressing at least one catalyst powder into a compressed layer to form a shaped body. The reaction mixture flows under pressure through the catalyst layer while the pressure drops. Furthermore, the apparatus is suitable for a use in a hydrogen shift phases for reducing carbon monoxide, in carbon monoxide oxidizers and catalytic burners. A process for producing the catalyst is also disclosed.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: February 11, 2003
    Assignee: Ballard Power Systems AG
    Inventors: Martin Schuessler, Tomas Stefanovski, Detlef zur Megede
  • Publication number: 20020046493
    Abstract: A device having a plurality of chambers for carrying out a solid-catalyzed reaction includes a common evaporation unit for evaporating liquid starting materials. The evaporation unit is in thermally conductive contact with a plurality of chambers. An area of the evaporation unit in which the evaporation substantially takes place is at least partially surrounded by the plurality of chambers.
    Type: Application
    Filed: September 21, 2001
    Publication date: April 25, 2002
    Inventors: Andreas Ebert, Oskar Lamla, Martin Schussler, Tomas Stefanovski
  • Publication number: 20020041839
    Abstract: A device feeds educts to parallel spaces separated from one another by way of a distributor unit. Outlets of the distributor unit are assigned to the spaces, and evaporator structures for the evaporation of liquid media are provided in the spaces. Each outlet of the distributor unit project into a space. The boiling point of the medium in the distributor unit is maintained above the temperature of the medium in the distributor unit.
    Type: Application
    Filed: August 13, 2001
    Publication date: April 11, 2002
    Inventors: Roland Cwik, Andreas Ebert, Oskar Lamla, Bruno Motzet, Martin Schuessler, Tomas Stefanovski, Alois Tischler, Marc Weisser
  • Publication number: 20020021992
    Abstract: A device for the catalytic generation of hydrogen from hydrocarbons includes a catalytic converter having feed and distribution channels for starting materials and discharge and collection manifolds for products. The feed and distribution channels and the discharge and collection manifolds are formed from a plurality of identically structured channels. Inlet channels for supplying and distributing starting materials and outlet channels for collecting and discharging products are defined by, in each case, inversely arranged closed and open channel ends. The inlet and outlet channels extend substantially across the entire catalytic converter and are provided in an alternately intermeshing arrangement.
    Type: Application
    Filed: June 11, 2001
    Publication date: February 21, 2002
    Inventors: Joanna Bass, Roland Cwik, Tomas Stefanovski