Patents by Inventor Andreas Sprafke

Andreas Sprafke 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).

  • Shaped bodies that can be scanned by optical systems
    Patent number: 7625442
    Abstract: The invention relates to a kit of parts consisting of: a) a material for producing a shaped body; b) a metal powder, a powder of a metal alloy, a powder of a pigment having a metallic effect or a powder having a laminar structure, and; c) if needed, of customary additives. The inventive kit of parts can be used to produce shaped bodies, especially in the field of dentistry, which can be excellently detected by optical systems.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: December 1, 2009
    Assignees: S & C Polymer Silicon- und Composite-Spezialitäten GmbH, R-Dental Dentalerzeugnisse GmbH
    Inventors: Juergen Engelbrecht, Wolfram Ziegler, Andreas Sprafke
  • Shaped bodies that can be scanned by optical systems
    Publication number: 20030162150
    Abstract: The invention relates to a kit of parts consisting of: a) a material for producing a shaped body; b) a metal powder, a powder of a metal alloy, a powder of a pigment having a metallic effect or a powder having a laminar structure, and; c) if needed, of customary additives. The inventive kit of parts can be used to produce shaped bodies, especially in the field of dentistry, which can be excellently detected by optical systems.
    Type: Application
    Filed: April 24, 2003
    Publication date: August 28, 2003
    Inventors: J?uuml;rgen Engelbrecht, Wolfram Ziegler, Andreas Sprafke