Patents by Inventor Rolf Wilkenhoener

Rolf Wilkenhoener 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: 7182580
    Abstract: On account of their form of coating, layer systems according to the prior art often only have a low level of attachment to the substrate. The layer may then become detached in the event of high mechanical loads being applied to the components. The layer system according to the invention has separately produced anchoring means which are more strongly attached to the substrate than the attachment of the layer to the substrate.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: February 27, 2007
    Assignee: Siemens Aktiengesellschaft
    Inventors: Georg Bostanjoglo, Nigel-Philip Cox, Rolf Wilkenhöner
  • Patent number: 7182581
    Abstract: On account of their type of coating, layer systems of the prior art often exhibit poor adhesion to the substrate. If the components are subject to high mechanical stresses, the layer can then become detached. The layer system according to the invention has separately produced anchoring means which allow stronger attachment to the substrate than the attachment of the outer layer to the substrate.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: February 27, 2007
    Assignee: Siemens Aktiengesellschaft
    Inventors: Georg Bostanjoglo, Nigel-Philip Cox, Rolf Wilkenhöner
  • Patent number: 7138065
    Abstract: The invention relates to a method for removing an area of a layer of a component consisting of metal or a metal compound. According to prior art, corrosion products of a component are removed in a first step by applying a molten mass or by heating in a voluminous powder bed. This requires high temperatures or a large amount of space. The inventive method for removing corrosion products of a component is characterized in that a cleaning agent is applied locally, which removes the corrosion products by means of a gaseous reaction product.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: November 21, 2006
    Assignees: Siemens Aktiengesellschaft, Diffusion Alloys Ltd.
    Inventors: Norbert Czech, Andre Jeutter, Adrian Kempster, Ralph Reiche, Rolf Wilkenhöner
  • Patent number: 7057132
    Abstract: A method is used for laser welding a workpiece along a welding line. At least two laser beams, which are offset in relation to one another, are guided along the welding line by moving an optical deflector unit. The method may be used for welding closure pins and casting induced openings of gas turbine blades.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: June 6, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventors: Thomas Beck, Nigel-Philip Cox, Silke Settegast, Rolf Wilkenhoener
  • Publication number: 20040094523
    Abstract: The invention relates to a method for laser welding a workpiece (1) along a welding line (20). A laser beam (13) is guided along the welding line (20) by moving an optical deflector unit (17). High movement speeds can be obtained using only a limited amount of machinery. The invention is particularly suitable for welding closure pins and casting induced openings (7) of gas turbine blades (1).
    Type: Application
    Filed: November 5, 2003
    Publication date: May 20, 2004
    Inventors: Thomas Beck, Nigel-Philip Cox, Silke Settegast, Rolf Wilkenhoener
  • Patent number: 6303098
    Abstract: A method of forming a hydrogen rich gas from a source of hydrocarbon fuel. A vapor of the hydrocarbon fuel and steam is brought in contact with a two-part catalyst having a dehydrogenation powder portion and an oxide-ion conducting powder portion at a temperature not less than about 770°C. for a time sufficient to generate the hydrogen rich. The H2 content of the hydrogen gas is greater than about 70 percent by volume. The dehydrogenation portion of the catalyst includes a group VIII metal, and the oxide-ion conducting portion is selected from a ceramic oxide from the group crystallizing in the fluorite or perovskite structure and mixtures thereof. The oxide-ion conducting portion of the catalyst is a ceramic powder of one or more of ZrO2, CeO2, Bi2O3, (BiVO)4, and LaGaO3.
    Type: Grant
    Filed: August 24, 1999
    Date of Patent: October 16, 2001
    Assignee: University of Chicago
    Inventors: Kurt W. Kramarz, Ira D. Bloom, Romesh Kumar, Shabbir Ahmed, Rolf Wilkenhoener, Michael Krumpelt
  • Patent number: 6180277
    Abstract: In a dispersoid-reinforced electrode with a net-like open pore structure and a ceramic and a metallic meshwork, ceramic particles with an average particle diameter of less than 100 nm are homogeneously distributed in the metallic network thereby reinforcing the electrode.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: January 30, 2001
    Assignee: Forschungszentrum J{umlaut over (u)}lich GmbH
    Inventors: Rolf Wilkenhöner, Robert Vassen, Detlev Stöver, Hans Peter Buchkremer, Werner Mallener