Patents by Inventor Helga Hornberger

Helga Hornberger 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).

  • Composite material and method for the preparation thereof
    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
  • Composite material and method for the preparation thereof
    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
  • Composite material and method for the production thereof
    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
  • Composite material and method for the production thereof
    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