Patents by Inventor Thomas Welker

Thomas Welker 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: 20150360591
    Abstract: A rotational energy absorber for a vehicle seat comprises a rotational axis, an outer tube element arranged centrally with respect to the rotational axis, an inner tube element arranged concentrically in the outer tube element and at least one energy absorption element for absorbing rotational energy, the inner tube element and the outer tube element being arranged rotatably relative to one another about the rotational axis.
    Type: Application
    Filed: June 11, 2015
    Publication date: December 17, 2015
    Inventors: Sven RÖLL, Stefan WALDMÜLLER, Thomas WELKER, Murad EL-AZZEH
  • Patent number: 8779031
    Abstract: Thermoplastic elastomer mixture which comprises at least one thermoplastic elastomer TPE, with the exception of a thermoplastic polyurethane TPU, and at least one filler from the group of precipitated silica, or precipitated silicate or carbon black. The thermoplastic elastomer mixtures are produced by, in a first step, mixing at least one filler selected from the group of precipitated silica, or precipitated silicate or carbon black, and at least one thermoplastic to give a masterbatch and, in a second step, mixing the masterbatch with at least one thermoplastic elastomer, with the exception of a thermoplastic polyurethane TPU. The thermoplastic elastomer mixture can be used in injection-molded items.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: July 15, 2014
    Assignee: Evonik Degussa GmbH
    Inventors: Uwe Schachtely, Dieter Kuhn, Uwe Kinzlinger, Gerold Schmidt, Guido Scharf, Joerg Roeder, Thomas Welker
  • Publication number: 20130245173
    Abstract: A processing aid is used in the processing of thermoplastic polyurethanes to give various articles including a self-supporting film. The processing aid contains a) 10-50% by weight of hydrophobized, at least partially aggregated, metal oxide particles selected from the group consisting of aluminium oxide, silicon dioxide and mixtures thereof, b) 20-75% by weight of one or more thermoplastic polyurethanes, c) 0.5-25% by weight of one or more isocyanates, d) 0.5-15% by weight of one or more compounds which act as lubricant and dispersant, the sum of the constituents a) to d) amounting to at least 90% by weight, based on a total weight of said processing aid.
    Type: Application
    Filed: May 13, 2013
    Publication date: September 19, 2013
    Applicant: Evonik Degussa GmbH
    Inventors: Thomas Welker, Ulrich Boes, Frank Menzel, Dieter Kuhn, Uwe Schachtely, Didier Lagneaux, Henri Sautel
  • Patent number: 8415430
    Abstract: Thermoplastic elastomer, which comprises a fumed, hydrophilic or hydrophobic silica, which has been structurally modified and also a process for the improvement of the mechanical properties of thermoplastic elastomers. The thermoplastic elastomers are produced by preparing a masterbatch from the components (e.g. thermoplastic resin component and fumed silica) and compounding this with further thermoplastic elastomers.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: April 9, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Dieter Kuhn, Werner Michel, Mario Scholz, Uwe Schachtely, Thomas Welker, Andrea Tietze, Ulrich Boes
  • Publication number: 20130020744
    Abstract: Processing aid comprising a) 10-50% by weight of hydrophobized, at least partially aggregated, metal oxide particles b) 20-75% by weight of one or more thermoplastic polyurethanes, c) 0.5-50 by weight of one or more prepolymers comprising isocyanate groups the sum of the constituents a) to c) amounting to at least 80% by weight, based on the processing aid.
    Type: Application
    Filed: March 21, 2011
    Publication date: January 24, 2013
    Applicant: Evonik Degussa GmbH
    Inventors: Thomas Welker, Frank Menzel, Dieter Kuhn, Uwe Schachtely, Uwe Kinzlinger, Ulrich Boes, Didier Lagneaux, Henri Sautel
  • Publication number: 20110112219
    Abstract: Thermoplastic elastomer mixture which comprises at least one thermoplastic elastomer TPE, with the exception of a thermoplastic polyurethane TPU, and at least one filler from the group of precipitated silica, or precipitated silicate or carbon black. The thermoplastic elastomer mixtures are produced by, in a first step, mixing at least one filler selected from the group of precipitated silica, or precipitated silicate or carbon black, and at least one thermoplastic to give a masterbatch and, in a second step, mixing the masterbatch with at least one thermoplastic elastomer, with the exception of a thermoplastic polyurethane TPU. The thermoplastic elastomer mixture can be used in injection-moulded items.
    Type: Application
    Filed: November 8, 2010
    Publication date: May 12, 2011
    Applicant: Evonik Degussa GmbH
    Inventors: Uwe SCHACHTELY, Dieter Kuhn, Uwe Kinzlinger, Gerold Schmidt, Guido Scharf, Jörg Röder, Thomas Welker
  • Publication number: 20110034590
    Abstract: Thermoplastic elastomer, which comprises a fumed, hydrophilic or hydrophobic silica, which has been structurally modified and also a process for the improvement of the mechanical properties of thermoplastic elastomers. The thermoplastic elastomers are produced by preparing a masterbatch from the components (e.g. thermoplastic resin component and fumed silica) and compounding this with further thermoplastic elastomers.
    Type: Application
    Filed: March 24, 2009
    Publication date: February 10, 2011
    Applicant: Evonik Degussa GmbH
    Inventors: Dieter Kuhn, Werner Michel, Mario Scholz, Uwe Schachtely, Thomas Welker, Andrea Tietze, Ulrich Boes
  • Publication number: 20100092710
    Abstract: A processing aid is used in the processing of thermoplastic polyurethanes to give various articles including a self-supporting film. The processing aid contains a) 10-50% by weight of hydrophobized, at least partially aggregated, metal oxide particles selected from the group consisting of aluminium oxide, silicon dioxide and mixtures thereof, b) 20-75% by weight of one or more thermoplastic polyurethanes, c) 0.5-25% by weight of one or more isocyanates, d) 0.5-15% by weight of one or more compounds which act as lubricant and dispersant, the sum of the constituents a) to d) amounting to at least 90% by weight, based on a total weight of said processing aid.
    Type: Application
    Filed: October 15, 2009
    Publication date: April 15, 2010
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Thomas Welker, Ulrich Boes, Frank Menzel, Dieter Kuhn, Uwe Schachtely, Didier Lagneaux, Henri Sautel
  • Patent number: 6307604
    Abstract: Light source having a luminescent layer (3,8) whose light is guided through an optical filter (5,9) comprising at least one cholesteric crystal layer (cholesteric filter).
    Type: Grant
    Filed: February 2, 1995
    Date of Patent: October 23, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Rifat Hikmet, Ralf Raue, Thomas Welker
  • Patent number: 5089883
    Abstract: The invention relates to a color television projection device having three planar monochromatic light sources for the background illumination of a viewing screen, in which a matrix-shaped electro-optical light valve is associated with each light source characterized in that the light sources are cathodo luminescent.
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: February 18, 1992
    Assignee: U.S. Philips Corporation
    Inventors: Thomas Welker, Thomas Zaengel
  • Patent number: 4982362
    Abstract: An electron beam recording medium with a coating, which is applied to a substrate, is sensitive to electron beam radiation and has an organic rare earth metal type phosphor, is suitable for the irreversible writing of information with low-intensity electron beams.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: January 1, 1991
    Assignee: U.S. Philips Corporation
    Inventors: Albert A. Comberg, Thomas A. Welker
  • Patent number: 4559469
    Abstract: A green emitting phosphor for heavily loaded cathode-ray tubes comprises a mixture of a deep-green and a yellowish-green emitting phosphor. Mixtures of Zn.sub.2 SiO.sub.4 :Mn and at least one phosphor from the group comprising Y.sub.2 SiO.sub.5 :Tb; X.sub.2 O.sub.2 S:Tb; ES:Ce and XOZ:Tb, where X=Y, La, Gd, Lu; E=Ca, Sr, Ba; and Z=Cl, Br, I, F; satisfy, as FIG. 1 illustrates for a few examples, the EBU specification.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: December 17, 1985
    Assignee: U.S. Philips Corporation
    Inventors: Thomas Welker, Klaus Carl, Wolfram Czarnojan