Patents by Inventor Ralph Gunnar Luthardt

Ralph Gunnar Luthardt 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: 9034225
    Abstract: The invention relates to a method for producing implants and components by direct shaping. The method includes the steps of producing a mold for the implants or components to be produced, making allowances for changes in geometry occurring during after-treatment after the implants or components are removed from the mold, and, providing partial areas of the mold with a structured surface for transferring this structure to the surfaces of the implants or components. In the method, raw material is introduced into the mold and, after remaining in the mold for a certain period of time, the hardened raw material is then removed from the mold to allow the implants or components to take on the structured surface of the mold as well as its geometry. The demolded implants or components are finally subjected to any after-treatment that may be necessary.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: May 19, 2015
    Assignee: Fraunhofer-Gesellschaft zur Foerderung de angwandten Forschung e. V
    Inventors: Baerbel Voigtsberger, Martina Johannes, Helke Rudolph, Ralph Gunnar Luthardt
  • Publication number: 20110127001
    Abstract: The invention relates to a method for producing implants and components by direct shaping. The method includes the steps of producing a mold for the implants or components to be produced, making allowances for changes in geometry occurring during after-treatment after the implants or components are removed from the mold, and, providing partial areas of the mold with a structured surface for transferring this structure to the surfaces of the implants or components. In the method, raw material is introduced into the mold and, after remaining in the mold for a certain period of time, the hardened raw material is then removed from the mold to allow the implants or components to take on the structured surface of the mold as well as its geometry. The demolded implants or components are finally subjected to any after-treatment that may be necessary.
    Type: Application
    Filed: August 13, 2008
    Publication date: June 2, 2011
    Inventors: Baerbel Voigtsberger, Martina Johannes, Helke Rudolph, Ralph Gunnar Luthardt
  • Publication number: 20090233258
    Abstract: The invention is directed to a method for the production of an individual tooth replacement formed of multiple layers, for example, a removable tooth replacement, implant superstructures, bridges, crowns, partial crowns, onlays and inlays.
    Type: Application
    Filed: October 26, 2006
    Publication date: September 17, 2009
    Inventors: Ralph Gunnar Luthardt, Martina Johannes
  • Patent number: 7162321
    Abstract: Tooth restorations are produced starting from data preferably obtained by optical or mechanical digitizing of prepared teeth and/or teeth of one jaw or of both jaws, intraorally, or from jaw models or partial models of one jaw or of both jaws, extraorally, a subsequent CAD construction of aforementioned restorations being produced in the way that an outer mold, in opposition to the oral cavity is constructed by the primary shaping of the tooth restoration, consisting throughout of high strength ceramic material, taking into account sinter shrinkage.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: January 9, 2007
    Assignees: Inocermic Gesellschaft Fuer Innovative Keyamik MBH
    Inventors: Ralph Gunnar Luthardt, Volker Herold, Martina Johannes, Olaf Sandkuhl
  • Publication number: 20030096214
    Abstract: The invention is based on the object of providing a method to produce a tooth restoration, in particular a tight-fitting ceramic tooth restoration, in which under avoidance of a hard-worked ceramic material and with a minimum of method steps, the outer shape of the ceramic tooth restoration being in opposition to the buccal cavity including the gradually thinning down restoration edge is manufactured in its final shape, whereby the sintering shrinkage is being taken into consideration.
    Type: Application
    Filed: November 5, 2002
    Publication date: May 22, 2003
    Inventors: Ralph Gunnar Luthardt, Volker Herold, Martina Johannes, Olaf Sandkuhl