Patents Assigned to Vita Zahnfabrik H. Rauter GmbH & Co. KG
  • Patent number: 7528956
    Abstract: A miniaturized spectrometer/spectrophotometer system and methods are disclosed. A probe tip including one or more light sources and a plurality of light receivers is provided. A first spectrometer system receives light from a first set of the plurality of light receivers. A second spectrometer system receives light from a second set of the plurality of light receivers. A processor, wherein the processor receives data generated by the first spectrometer system and the second spectrometer system, wherein an optical measurement of a sample under test is produced based on the data generated by the first and second spectrometer systems.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: May 5, 2009
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Wayne D. Jung, Russell W. Jung, Walter W. Sloan, Alan R. Loudermilk
  • Patent number: 7477364
    Abstract: A miniaturized spectrometer/spectrophotometer system and methods are disclosed. A probe tip including one or more light sources and a plurality of light receivers is provided. A first spectrometer system receives light from a first set of the plurality of light receivers. A second spectrometer system receives light from a second set of the plurality of light receivers. A processor, wherein the processor receives data generated by the first spectrometer system and the second spectrometer system, wherein an optical measurement of a sample under test is produced based on the data generated by the first and second spectrometer systems.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: January 13, 2009
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Wayne D. Jung, Russell W. Jung, Walter W. Sloan, Alan R. Loudermilk
  • Patent number: 7477391
    Abstract: A miniaturized spectrometer/spectrophotometer system and methods are disclosed. A probe tip including one or more light sources and a plurality of light receivers is provided. A first spectrometer system receives light from a first set of the plurality of light receivers. A second spectrometer system receives light from a second set of the plurality of light receivers. A processor, wherein the processor receives data generated by the first spectrometer system and the second spectrometer system, wherein an optical measurement of a sample under test is produced based on the data generated by the first and second spectrometer systems. Improved shade matching/prediction results are obtained through the use of volumes/regions, preferably polygons, around shades in a shade system.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: January 13, 2009
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Wayne D. Jung, Russell W. Jung, Walter W. Sloan, Alan R. Loudermilk
  • Patent number: 7301636
    Abstract: A miniaturized spectrometer/spectrophotometer system and methods are disclosed. A probe tip including one or more light sources and a plurality of light receivers is provided. A first spectrometer system receives light from a first set of the plurality of light receivers. A second spectrometer system receives light from a second set of the plurality of light receivers. A processor, wherein the processor receives data generated by the first spectrometer system and the second spectrometer system, wherein an optical measurement of a sample under test is produced based on the data generated by the first and second spectrometer systems. Improved shade matching/prediction results are obtained through the use of volumes/regions, preferably polygons, around shades in a shade system.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: November 27, 2007
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Wayne D. Jung, Russell W. Jung, Walter W. Sloan, Alan R. Loudermilk
  • Patent number: 7298483
    Abstract: A miniaturized spectrometer/spectrophotometer system and methods are disclosed. A probe tip including one or more light sources and a plurality of light receivers is provided. A first spectrometer system receives light from a first set of the plurality of light receivers. A second spectrometer system receives light from a second set of the plurality of light receivers. A processor, wherein the processor receives data generated by the first spectrometer system and the second spectrometer system, wherein an optical measurement of a sample under test is produced based on the data generated by the first and second spectrometer systems.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: November 20, 2007
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Wayne D. Jung, Russell W. Jung, Walter W. Sloan, Alan R. Loudermilk
  • Patent number: 7294392
    Abstract: A composite material with a porous inorganic-nonmetallic matrix and a second material, is characterized in that the porous inorganic-nonmetallic matrix has a bending strength of ?40 MPa as measured according to ISO 6 872; the second material is an organic material which at least partly fills the pores of the porous matrix; and the composite material has a modulus of elasticity, E, of ?25 GPa as measured according to ISO 10 477.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: November 13, 2007
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Stefan Aechtner, Helga Hornberger, Emil Nagel, Norbert Thiel
  • Patent number: 7223808
    Abstract: The invention relates to a method for the production of an adhesive and an adhesive kit for joining similar or different metal surfaces or ceramics, especially in the field of biomedicine. The objective of the invention is to avoid polymerization-linked by-products and disadvantageous effects, in addition to enabling a temporary biocompatible bond between metal and metal or metal and ceramics. The inventive method consist in using a monomer-free polymethylmethacrylate which is mixed with a suitable, non-toxic solvent and a bioactive vitreous-crystalline material with a particle size ranging from 0.05–20?, consisting of 15–45 wt. % CaO, 40–45 wt. % P2O5, 10–40 wt. % ZrO2 and 0.7–3.5 wt. % fluoride, having apatite and calcium zircon phosphate as main crystal phases and a glass phase as an auxiliary component until a flowable mixture is obtained. The invention also relates to an adhesive kit consisting of said components.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: May 29, 2007
    Assignees: Humboldt Universitaet Berlin Carite Universitaetsklinikum (CCM), Bam Bundesanstalt Fuer Materialforschung und -Pruefung, Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Wolf-Dieter Müller, Georg Berger, Emil Nagel, Klaus-Peter Lange
  • Patent number: 7109254
    Abstract: A method for producing a bioactive bone cement and a bone cement kit for anchoring artificial joints and for filling out bone defects. The method avoids polymerization-linked by-products and disadvantageous effects, while at the same time providing the bone cement with long-term stability. The inventive method uses a monomer-free polymethylmethacrylate, which is mixed with a suitable non-toxic solvent, and a bioactive, vitreous-crystalline material with a particle size ranging from >20 to 200 ?m, having 15–45 wt. % CaO, 40–45 wt. % P2O5, 10–40 wt. % ZrO2 and 0.7–3.5 wt. % fluoride, having apatite and calcium zircon phosphate as main crystal phases and a glass phase as an auxiliary component until a flowable mixture is obtained. The invention also relates to a bone cement kit having said components.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: September 19, 2006
    Assignees: BAM Bundesanstalt fuer Materialforschung und - pruefung, Vita Zahnfabrik H. Rauter GmbH & Co. KG, Humboldt-Universitaet Berlin, Charite Universitaetsklinikum (CCM) Medizinische Fakultaet der Humbolt-Universitaet
    Inventors: Wolf-Dieter Müller, Emil Nagel, Georg Berger
  • Patent number: 5910273
    Abstract: A process for manufacturing dental prosthetics based on ceramics including the following steps:machine-processing a prefabricated shaped body to form a molded body with the patient's situation being considered, said prefabricated shaped body consisting of at least one oxide-ceramic material selected from the group consisting of aluminum oxide, magnesium oxide, zirconium oxide, and titanium oxide and minor amounts of siliceous additives;compacting the thus obtained molded body; andoptionally jacketing the compacted molded body.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: June 8, 1999
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Norbert Thiel, Gabriele Datzmann
  • Patent number: 5591030
    Abstract: A dental ceramic restoration having a multi-layered structure on a core, obtainable by applying an opaque layer composed of from 50 to 60 wt.-% of SiO.sub.2, 4 to 10 wt.-% of Na.sub.2 O, 0 to 2.5 wt.-% of CaO, 8 to 14 wt.-% of K.sub.2 O, 10 to 20 wt.-% of Al.sub.2 O.sub.3, 0 to 6 wt.-% of B.sub.2 O.sub.3, 5 to 12 wt.-% of TiO.sub.2, and pigments, preferably on oxide basis, onto a core, followed by sintering this assembly, and thereafter applying dentin and enamel layers composed of from 50 to 60 wt.-% of SiO.sub.2, 4 to 10 wt.-% of Na.sub.2 O, 0 to 2.5 wt.-% of CaO, 8 to 14 wt.-% of K.sub.2 O, 10 to 20 wt.-% of Al.sub.2 O.sub.3, 2 to 10 wt.-% B.sub.2 O.sub.3, preferably 4 to 8 wt.-% of B.sub.2 O.sub.3, and pigments, preferably on oxide basis, onto a core, followed by firing this assembly.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: January 7, 1997
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Norbert Thiel, Susanne Weber
  • Patent number: 5575653
    Abstract: The artificial tooth blanks made by series production involve a dentin-colored fired dental ceramic composition including a previously compression-molded hard core and optionally a retention, wherein the size of the artificial tooth blank is reduced over that of the corresponding finished artificial tooth and the artificial tooth blanks do not contain an enamel layer. The retention may involve one or more high-melting shells incorporated by firing and containing high-melting retention pins soldered therein after firing, wherein the retention pins as well as the solder are stable under the melting conditions for dental ceramic compositions for bridges and crowns, and especially so in the presence of air as well.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: November 19, 1996
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Martha Freyer, Rainer Mattern
  • Patent number: D563094
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: March 4, 2008
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventor: Wolfgang Meyer-Hayoz