Patents by Inventor Emil Nagel

Emil Nagel 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: 7807227
    Abstract: A composite material with a porous inorganic-nonmetallic matrix and a second material, and a process for its production, are characterized in that the porous inorganic-nonmetallic matrix has a bending strength ?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, ?25 GPa as measured according to ISO 10 477.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: October 5, 2010
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Stefan Aechtner, Helga Hornberger, Emil Nagel, Norbert Thiel
  • Publication number: 20090001623
    Abstract: A composite material with a porous inorganic-nonmetallic matrix and a second material, characterized in that said porous inorganic-nonmetallic matrix has a bending strength of ?40 MPa as measured according to ISO 6 872; said second material is an organic material which at least partly fills the pores of said porous matrix; and said composite material has a modulus of elasticity, E, of ?25 GPa as measured according to ISO 10 477.
    Type: Application
    Filed: October 2, 2007
    Publication date: January 1, 2009
    Inventors: Stefan Aechtner, Helga Hornberger, Emil Nagel, Norbert Thiel
  • 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
  • Publication number: 20040175409
    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&mgr;, 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: Application
    Filed: December 15, 2003
    Publication date: September 9, 2004
    Inventors: Wolf-Dieter Muller, Georg Berger, Emil Nagel, Klaus-Peter Lange
  • Publication number: 20040138759
    Abstract: The invention relates to a method for producing a bioactive bone cement and a bone cement kit for anchoring artificial joints and for filling out bone defects. The objective of the invention is to avoid polymerization-linked by-products and disadvantageous effects, while at the same time providing the bone cement with long-term stability. The inventive method consists 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 >20 to 200 &mgr;m, 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 a bone cement kit consisting of said components.
    Type: Application
    Filed: December 15, 2003
    Publication date: July 15, 2004
    Inventors: Wolf-Dieter Muller, Emil Nagel, Georg Berger
  • Publication number: 20040081847
    Abstract: A composite material with a porous inorganic-nonmetallic matrix and a second material, characterized in that
    Type: Application
    Filed: October 29, 2003
    Publication date: April 29, 2004
    Inventors: Stefan Aechtner, Helga Hornberger, Emil Nagel, Norbert Thiel
  • Patent number: 4771162
    Abstract: A device for treating plastic parts for use in dental and orthodontic applications includes a pressure receptacle which has walls which define a hollow interior with an opening which is closable by a cover or lid. A support for material to be treated is placed within the hollow interior at a spaced location in the interior walls and adjacent a heating device which is advantageously an electric heating element. The device includes a rotatable fan which is advantageously mounted on the vessel as a shaft which extends through the vessel interior and carries a rotatable fan which is rotated so as to direct a gas such as air past objects held on a support and past the heater which maintains the circulating gases at a temperature which permits polymerization of the parts. The heating air is continuously circulated and it is heated by the heater sufficiently to maintain a selected polymerization temperature.
    Type: Grant
    Filed: December 15, 1986
    Date of Patent: September 13, 1988
    Assignee: FKB Feinwerktechnik und Kunststoffverarbeitungs GmbH
    Inventors: Rolf Schatz, Bernhard Link, Emil Nagel