Patents by Inventor Ruediger Foest

Ruediger Foest 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).

  • Publication number: 20140162338
    Abstract: The invention relates to a special plasma source designated as a plasma intractor (PI) for producing a cold, homogeneous plasma under atmospheric pressure conditions, which plasma source can be used advantageously to excite and control reactive processes in flowing media. The device according to the invention is characterized in that the device comprises at least 6 elongated electrodes (2) and a molded body (1) made of insulating material, the molded body (1) being provided with an elongated cylindrical cavity (7) and with additional holes, which are guided parallel to the cavity (7) and arranged symmetrical to the axis of the cavity and equidistant to one another, and the electrodes (2) are embedded in holes of the molded body (1) and are connected to an AC high-voltage supply in such a way that the polarities of respective adjacent electrodes are opposite in each phase of the voltage period.
    Type: Application
    Filed: May 29, 2012
    Publication date: June 12, 2014
    Applicant: Leibniz-Institut fuer Plasmaforschung und Technologie e.V.
    Inventors: Jan Schaefer, Stefan Horn, Ronny Brandenburg, Ruediger Foest, Manfred Stieber, Klaus-Dieter Weltmann
  • Patent number: 8557187
    Abstract: A method and a series of devices for dry cleaning, activating, modifying, coating, and biologically decontaminating (degerming, disinfecting, sterilizing) surfaces by means of an atmospheric pressure plasma generated using a surface barrier discharge are provided. The invention is used for dry cleaning, activating, coating, modifying, and biologically contaminating surfaces by means of an atmospheric pressure plasma generated in a defined, flowing gas atmosphere by a surface barrier discharge, comprising a high-voltage electrode that is covered with a dielectric or ferroelectric material, an electrically conducting grounded contact electrode, a high-voltage supply, a gas supply, and a gas nozzle (encompassing a gas outlet); said gas nozzle is located in the direct vicinity of the grounded contact electrode, is integrated into the contact electrode, or acts as the grounded contact electrode.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: October 15, 2013
    Assignee: Neoplas GmbH
    Inventors: Joerg Ehlbeck, Ruediger Foest, Eckhard Kindel, Norbert Lembke, Manfred Stieber, Klaus-Dieter Weltmann
  • Patent number: 8541065
    Abstract: The invention relates to a method for coating surfaces with micro- and nanoparticles, the micro- and nanoparticles being chemically bonded to the surface, comprising the steps of pre-treatment of the surface with a plasma method, simultaneous or subsequent application of the micro- and nanoparticles to the surface, and subsequent fixation of the micro and nanoparticles on the surface using a plasma method, characterized in that the fixation of the micro- and nanoparticles takes place with the aid of anisothermal plasmas, the median electrical energy of which lies in the range of the bond dissociation energy of the micro- and nanoparticles, thus allowing the strength of the chemical bond between the surface and the micro- and nanoparticles to be variably set.
    Type: Grant
    Filed: May 31, 2008
    Date of Patent: September 24, 2013
    Assignee: INP Greifswald, Leibniz-Institut fuer Plasmaforschung und Technologie e.V.
    Inventors: Gerold Lukowski, Karsten Schroeder, Wolf-Dieter Juelich, Ruediger Foest, Klaus-Dieter Weltmann, Joerg Ehlbeck
  • Publication number: 20110159273
    Abstract: The invention relates to a method for coating surfaces with micro- and nanoparticles, the micro- and nanoparticles being chemically bonded to the surface, comprising the steps of pre-treatment of the surface with a plasma method, simultaneous or subsequent application of the micro- and nanoparticles to the surface, and subsequent fixation of the micro and nanoparticles on the surface using a plasma method, characterized in that the fixation of the micro- and nanoparticles takes place with the aid of anisothermal plasmas, the median electrical energy of which lies in the range of the bond dissociation energy of the micro- and nanoparticles, thus allowing the strength of the chemical bond between the surface and the micro- and nanoparticles to be variably set.
    Type: Application
    Filed: May 31, 2008
    Publication date: June 30, 2011
    Applicants: Ernst-Moritz-Arndt-Universitaet Greifswald, Inst Fuer Niedertemp.-Plasmaphysik E.V. Greifswald
    Inventors: Gerold Lukowski, Karsten Schroeder, Wolf-Dieter Juelich, Ruediger Foest, Klaus-Dieter Weltmann, Joerg Ehlbeck
  • Publication number: 20100292757
    Abstract: A method and a series of devices for dry cleaning, activating, modifying, coating, and biologically decontaminating (degerming, disinfecting, sterilizing) surfaces by means of an atmospheric pressure plasma generated using a surface barrier discharge are provided. The invention is used for dry cleaning, activating, coating, modifying, and biologically contaminating surfaces by means of an atmospheric pressure plasma generated in a defined, flowing gas atmosphere by a surface barrier discharge, comprising a high-voltage electrode that is covered with a dielectric or ferroelectric material, an electrically conducting grounded contact electrode, a high-voltage supply, a gas supply, and a gas nozzle (encompassing a gas outlet); said gas nozzle is located in the direct vicinity of the grounded contact electrode, is integrated into the contact electrode, or acts as the grounded contact electrode.
    Type: Application
    Filed: February 12, 2010
    Publication date: November 18, 2010
    Applicant: NEOPLAS GMBH
    Inventors: Joerg Ehlbeck, Ruediger Foest, Eckhard Kindel, Norbert Lembke, Manfred Stieber, Klaus-Dieter Weltmann