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: 20150360591Abstract: 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: ApplicationFiled: June 11, 2015Publication date: December 17, 2015Inventors: Sven RÖLL, Stefan WALDMÜLLER, Thomas WELKER, Murad EL-AZZEH
-
Patent number: 8779031Abstract: 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: GrantFiled: November 8, 2010Date of Patent: July 15, 2014Assignee: Evonik Degussa GmbHInventors: Uwe Schachtely, Dieter Kuhn, Uwe Kinzlinger, Gerold Schmidt, Guido Scharf, Joerg Roeder, Thomas Welker
-
Publication number: 20130245173Abstract: 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: ApplicationFiled: May 13, 2013Publication date: September 19, 2013Applicant: Evonik Degussa GmbHInventors: Thomas Welker, Ulrich Boes, Frank Menzel, Dieter Kuhn, Uwe Schachtely, Didier Lagneaux, Henri Sautel
-
Patent number: 8415430Abstract: 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: GrantFiled: March 24, 2009Date of Patent: April 9, 2013Assignee: Evonik Degussa GmbHInventors: Dieter Kuhn, Werner Michel, Mario Scholz, Uwe Schachtely, Thomas Welker, Andrea Tietze, Ulrich Boes
-
Publication number: 20130020744Abstract: 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: ApplicationFiled: March 21, 2011Publication date: January 24, 2013Applicant: Evonik Degussa GmbHInventors: Thomas Welker, Frank Menzel, Dieter Kuhn, Uwe Schachtely, Uwe Kinzlinger, Ulrich Boes, Didier Lagneaux, Henri Sautel
-
Publication number: 20110112219Abstract: 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: ApplicationFiled: November 8, 2010Publication date: May 12, 2011Applicant: Evonik Degussa GmbHInventors: Uwe SCHACHTELY, Dieter Kuhn, Uwe Kinzlinger, Gerold Schmidt, Guido Scharf, Jörg Röder, Thomas Welker
-
Publication number: 20110034590Abstract: 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: ApplicationFiled: March 24, 2009Publication date: February 10, 2011Applicant: Evonik Degussa GmbHInventors: Dieter Kuhn, Werner Michel, Mario Scholz, Uwe Schachtely, Thomas Welker, Andrea Tietze, Ulrich Boes
-
Publication number: 20100092710Abstract: 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: ApplicationFiled: October 15, 2009Publication date: April 15, 2010Applicant: EVONIK DEGUSSA GmbHInventors: Thomas Welker, Ulrich Boes, Frank Menzel, Dieter Kuhn, Uwe Schachtely, Didier Lagneaux, Henri Sautel
-
Patent number: 6307604Abstract: 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: GrantFiled: February 2, 1995Date of Patent: October 23, 2001Assignee: U.S. Philips CorporationInventors: Rifat Hikmet, Ralf Raue, Thomas Welker
-
Patent number: 5089883Abstract: 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: GrantFiled: October 27, 1989Date of Patent: February 18, 1992Assignee: U.S. Philips CorporationInventors: Thomas Welker, Thomas Zaengel
-
Patent number: 4982362Abstract: 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: GrantFiled: July 16, 1986Date of Patent: January 1, 1991Assignee: U.S. Philips CorporationInventors: Albert A. Comberg, Thomas A. Welker
-
Patent number: 4559469Abstract: 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: GrantFiled: April 19, 1985Date of Patent: December 17, 1985Assignee: U.S. Philips CorporationInventors: Thomas Welker, Klaus Carl, Wolfram Czarnojan