Patents by Inventor Theo Tervoort

Theo Tervoort 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: 11858197
    Abstract: An additive manufacturing process for the manufacture of an object in an additive manufacturing apparatus, wherein the object is formed by one or several individual solid filamentous units. The additive manufacturing process comprises the steps of discharging a polymer composition in a molten state from a nozzle of a print head, thereby imparting an orienting flow on the polymer composition in a molten state being discharged from the nozzle of the print head and depositing said discharged polymer composition in a molten state along at least one predefined path and allowing the thus formed one or several filamentous units to solidify such as to form one or several solid filamentous units of the object to be manufactured. Optionally, the previous step may be repeated until the object is formed. The polymer composition comprises a thermotropic liquid crystal polymer as the polymer component of the polymer composition.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: January 2, 2024
    Assignee: ETH Zürich
    Inventors: Silvan Gantenbein, Kunal Masania, Theo Tervoort, André R. Studart, Jens P. W. Sesseg, Wilhelm Woigk
  • Publication number: 20230312781
    Abstract: An ultra-high molecular weight polyethylene polymer has: a powder bulk density of at least 200 kg/m3; an intrinsic viscosity (I.V.) of at least 8 dl/g, as measured in accordance with ASTM D4020; and wherein, a specimen prepared from the ultra-high molecular weight polyethylene can be drawn in the absence of a solvent, at a total draw ratio of at least 50, when drawing at a drawing temperature of ?Tm?30° C., wherein Tm is the melting temperature of the ultra-high molecular weight polyethylene polymer. A supported catalyst system for producing such UHMWPE polymers includes a transition metal complex and a particulate catalyst support including particles having a volume based median particle diameter of at least 0.3 micrometer. Articles derived from such polymers having excellent strength and modulus.
    Type: Application
    Filed: August 30, 2021
    Publication date: October 5, 2023
    Inventors: Enrico TROISI, Nicolaas Hendrika FRIEDERICHS, Theo TERVOORT, Fotios CHRISTAKOPOULOS
  • Publication number: 20210323219
    Abstract: An additive manufacturing process for the manufacture of an object in an additive manufacturing apparatus, wherein the object is formed by one or several individual solid filamentous units, said additive manufacturing process comprises the steps of, discharging a polymer composition in a molten state from a nozzle of a print head, thereby imparting an orienting flow on the polymer composition in a molten state being discharged from the nozzle of the print head and depositing said discharged polymer composition in a molten state along at least one predefined, preferably horizontal, path and allowing the thus formed one or several filamentous units to solidify such as to form one or several solid filamentous units of the object to be manufactured; optionally repeating the previous step until the object is formed; wherein said polymer composition comprises a thermotropic liquid crystal polymer as a polymer component of the polymer composition and the solid filamentous units are characterized in that the smal
    Type: Application
    Filed: June 21, 2019
    Publication date: October 21, 2021
    Applicant: ETH Zürich
    Inventors: Silvan GANTENBEIN, Kunal MASANIA, Theo TERVOORT, André R. STUDART, Jens SESSEG, Wilhelm WOIGK
  • Patent number: 8871131
    Abstract: Provided are processes comprising crosslinking polyethylene or using crosslinked polyethylene. Furthermore, the processes may include compacting and/or sintering the polyethylene. The polyethylene can comprise virgin ultrahigh molecular weight polyethylene having a weight average molecular weight of at least 1,000,000 g/mol, to provide a compacted composition comprising virgin ultrahigh molecular weight polyethylene.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: October 28, 2014
    Assignee: Smith and Nephew Orthopaedics AG
    Inventors: Hans Schmotzer, Yvo Dirix, Paul Smith, Theo Tervoort, Lorenz Brunner
  • Patent number: 8153783
    Abstract: The production of polysaccharide networks, especially starch networks, having a high network density, high solidity, a low swelling degree, and exhibiting reduced water absorption and to the uses thereof, especially, in the filed of biodegradable plastics.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: April 10, 2012
    Assignee: InnoGEL AG
    Inventors: Rolf Muller, Federico Innerebner, Paul Smith, Theo A. Tervoort
  • Patent number: 8063175
    Abstract: Methods of making ultrahigh molecular weight polyethylene (UMWPE) having increased strength and/or wear resistance, such as high yield strength, high tensile strength, high load strength, and/or high impact strength. Some embodiments include making UHMWPE having increased strength and/or wear resistance, such as that listed above, where the UHMWPE has co-monomers.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: November 22, 2011
    Assignee: Smith & Nephew Orthopaedics AG
    Inventors: Paul Smith, Jeroen Visjager, Theo Tervoort
  • Patent number: 8003752
    Abstract: Articles made of and/or including ultrahigh molecular weight polyethylene (UMWPE) having increased strength and/or wear resistance, such as high yield strength, high tensile strength, high load strength, and/or high impact strength. Some embodiments of articles made of and/or including UHMWPE having increased strength and/or wear resistance, such as that listed above, include UHMWPE having co-monomers.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: August 23, 2011
    Assignee: Smith & Nephew Orthopaedics AG
    Inventors: Paul Smith, Jeroen Visjager, Theo Tervoort
  • Patent number: 7968028
    Abstract: The present invention provides polymer gel-processing techniques and polymer articles of high modulus.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: June 28, 2011
    Assignee: Eidgenossische Technische Hochschule Zurich
    Inventors: Magnus Kristiansen, Theo A. Tervoort, Paul Smith
  • Publication number: 20110124777
    Abstract: The production of polysaccharide networks, especially starch networks, having a high network density, high solidity, a low swelling degree, and exhibiting reduced water absorption and to the uses thereof, especially, in the filed of biodegradable plastics.
    Type: Application
    Filed: October 18, 2010
    Publication date: May 26, 2011
    Applicant: INNOGEL AG
    Inventors: Rolf Müller, Federico Innerebner, Paul Smith, Theo A. Tervoort
  • Patent number: 7943765
    Abstract: The production of polysaccharide networks, especially starch networks, having a high network density, high solidity, a low swelling degree, and exhibiting reduced water absorption and to the uses thereof, especially, in the field of biodegradable plastics.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: May 17, 2011
    Assignee: Innogel AG
    Inventors: Rolf Müller, Federico Innerebner, Paul Smith, Theo A. Tervoort
  • Publication number: 20110084427
    Abstract: Methods of making ultrahigh molecular weight polyethylene (UMWPE) having increased strength and/or wear resistance, such as high yield strength, high tensile strength, high load strength, and/or high impact strength. Some embodiments include making UHMWPE having increased strength and/or wear resistance, such as that listed above, where the UHMWPE has co-monomers.
    Type: Application
    Filed: December 20, 2010
    Publication date: April 14, 2011
    Applicant: SMITH & NEPHEW ORTHOPAEDICS AG
    Inventors: Paul Smith, Jeroen Visjager, Theo Tervoort
  • Publication number: 20110086993
    Abstract: Articles made of and/or including ultrahigh molecular weight polyethylene (UMWPE) having increased strength and/or wear resistance, such as high yield strength, high tensile strength, high load strength, and/or high impact strength. Some embodiments of articles made of and/or including UHMWPE having increased strength and/or wear resistance, such as that listed above, include UHMWPE having co-monomers.
    Type: Application
    Filed: December 20, 2010
    Publication date: April 14, 2011
    Applicant: SMITH & NEPHEW ORTHOPAEDICS AG
    Inventors: Paul Smith, Jeroen Visjager, Theo Tervoort
  • Patent number: 7863410
    Abstract: Methods of producing ultrahigh molecular weight polyethylene compositions of highly beneficial sintering characteristics are disclosed herein. Some embodiments provide for adding small amounts of a co-monomer to the polyethylene to improve various characteristics, including wear resistance.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: January 4, 2011
    Assignee: Smith & Nephew Orthopaedics AG
    Inventors: Paul Smith, Jeroen Visjager, Theo Tervoort
  • Publication number: 20100069576
    Abstract: Provided are processes comprising crosslinking polyethylene or using crosslinked polyethylene. Furthermore, the processes may include compacting and/or sintering the polyethylene.
    Type: Application
    Filed: October 30, 2006
    Publication date: March 18, 2010
    Applicant: SMITH & NEPHEW ORTHOPAEDICS AG
    Inventors: Hans Schmotzer, Yvo Dirix, Paul Smith, Theo Tervoort, Lorenz Brunner
  • Publication number: 20090318654
    Abstract: Ultrahigh molecular weight polyethylene compositions of highly beneficial sintering characteristics are disclosed and methods for making and processing time. Additionally, products comprising these compositions are described.
    Type: Application
    Filed: June 18, 2009
    Publication date: December 24, 2009
    Applicant: Smith & Nephew Orthopaedics AG
    Inventors: Paul Smith, Jeroen Visjager, Theo Tervoort
  • Publication number: 20090295019
    Abstract: The present invention provides polymer gel-processing techniques and polymer articles of high modulus.
    Type: Application
    Filed: August 13, 2009
    Publication date: December 3, 2009
    Applicant: Eidgenossische Technische Hochschule Zurich
    Inventors: Magnus Kristiansen, Theo Tervoort, Paul Smith
  • Publication number: 20090253882
    Abstract: Melt-processible, thermoplastic polyethylene compositions of high resistance against wear are disclosed and methods for making and processing same. Additionally, products comprising these compositions are described.
    Type: Application
    Filed: October 21, 2008
    Publication date: October 8, 2009
    Inventors: Paul Smith, Jeroen Visjager, Theo Tervoort
  • Patent number: 7575703
    Abstract: The present invention provides polymer gel-processing techniques and polymer articles of high modulus.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: August 18, 2009
    Assignee: Eidgenössische Technische Hochschule Zürich
    Inventors: Magnus Kristiansen, Theo Tervoort, Paul Smith
  • Patent number: 7550555
    Abstract: Ultrahigh molecular weight polyethylene compositions of highly beneficial sintering characteristics are disclosed and methods for making and processing same. Additionally, products comprising these compositions are described.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: June 23, 2009
    Assignee: Smith & Nephew Orthopaedics AG
    Inventors: Paul Smith, Jeroen Visjager, Theo Tervoort
  • Patent number: 7456242
    Abstract: Melt-processible, thermoplastic polyethylene compositions of high resistance against wear are disclosed and methods for making and processing same. Additionally, products comprising these compositions are described.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: November 25, 2008
    Assignee: Eidgenossische Technische Hochschule Zurich
    Inventors: Paul Smith, Jeroen Visjager, Theo Tervoort