Patents by Inventor Stefan Hehn

Stefan Hehn 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: 9566137
    Abstract: The invention relates to a method for validating a drilling template for producing an implant-borne tooth replacement before performing an implant drilling. The drilling template produced is placed on dental structures of a jaw area that is to be provided with the tooth replacement. A measuring element is inserted into the drill guide of the drilling template, wherein the measuring element and at least one partial region of the dental structures not covered by the drilling template is measured using an optical three-dimensional measuring method.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: February 14, 2017
    Assignee: SIRONA DENTAL SYSTEMS GmbH
    Inventor: Stefan Hehn
  • Publication number: 20140234803
    Abstract: The invention relates to a method for validating a drilling template for producing an implant-borne tooth replacement before performing an implant drilling. The drilling template produced is placed on dental structures of a jaw area that is to be provided with the tooth replacement. A measuring element is inserted into the drill guide of the drilling template, wherein the measuring element and at least one partial region of the dental structures not covered by the drilling template is measured using an optical three-dimensional measuring method.
    Type: Application
    Filed: September 26, 2012
    Publication date: August 21, 2014
    Inventor: Stefan Hehn
  • Patent number: 6394880
    Abstract: A device for production of medical fittings, in particular dental restorations, of simple construction, where it is also to be ensured that the restorations are not destroyed by the machining forces. It is of particular importance that the fittings can be made especially quickly and with precision. To achieve this, a device is proposed with a workpiece 1 which can be moved in the axial direction along a feed axis 3, with a first machining tool 5 on one side of the feed axis 3, and with a second machining tool 15 operating simultaneously on the other side of the workpiece 1, in which device the machining tools 5, 15 are designed as rods which can be set in rotation and have radial and terminal working faces 16, 17, 17′, and in which device the machining tools 5, 15, during machining of the workpiece 1, are arranged at approximately the same height relative to the feed axis 3 of the workpiece, so that they work along closely adjacent machining areas 32, 33; 44, 45.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: May 28, 2002
    Assignee: Sirona Dental Systems GmbH
    Inventors: Franz Basler, Stefan Hehn, Bernd Rothenberger