Patents by Inventor Carsten Jana

Carsten Jana 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).

  • Method of producing a dental restoration, dental restoration and use thereof
    Patent number: 9439739
    Abstract: The invention relates to a method of producing a dental restoration (40), the method comprising the steps of providing a metallic frame (21) having an inner and an outer surface, applying one or more opaque layer(s) (23) or composition on the outer surface of the metallic frame, providing a facing precursor (31) having a volume A, mating the facing precursor on the outer surface of the metallic frame coated with the opaque layer using a mating composition to obtain a dental restoration intermediate, firing the dental restoration intermediate to a temperature where the facing precursor sinters to obtain a sintered facing having the volume B, and optionally applying a stain and/or glacing layer on the outer surface of the sintered facing. The invention also relates to a dental restoration obtainable by such a process.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: September 13, 2016
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Carsten Jana, Holger Hauptmann, Bernd K. Burger
  • METHOD OF PRODUCING A DENTAL RESTORATION, DENTAL RESTORATION AND USE THEREOF
    Publication number: 20110275031
    Abstract: The invention relates to a method of producing a dental restoration (40), the method comprising the steps of providing a metallic frame (21) having an inner and an outer surface, applying one or more opaque layer(s) (23) or composition on the outer surface of the metallic frame, providing a facing precursor (31) having a volume A, mating the facing precursor on the outer surface of the metallic frame coated with the opaque layer using a mating composition to obtain a dental restoration intermediate, firing the dental restoration intermediate to a temperature where the facing precursor sinters to obtain a sintered facing having the volume B, and optionally applying a stain and/or glacing layer on the outer surface of the sintered facing. The invention also relates to a dental restoration obtainable by such a process.
    Type: Application
    Filed: October 21, 2009
    Publication date: November 10, 2011
    Inventors: Carsten Jana, Holger Hauptmann, Bernd K. Burger
  • Apatite glass ceramic
    Patent number: 5318929
    Abstract: The invention relates to an apatite glass ceramic which can be used as a material in medicine and as an inorganic component of a glass ionomer cement. The apatite glass ceramic comprises in wt-%) 15-40% SiO.sub.2, 15-35% Al.sub.2 O.sub.3, 12-30% CaO, 6-25% P.sub.2 O.sub.5, 2.5-15% F.sup.-, 0-18% R.sub.2 O, wherein R.sub.2 O is an alkali oxide. The apatite glass ceramic comprises a crystal phase which contains apatite.
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: June 7, 1994
    Assignee: Thera Patent GmbH & Co. KG Gesellschaft fur Industrielle Schutzrechte
    Inventors: Carsten Jana, Wolfram Holand, Werner Vogel