Patents by Inventor Marion Gemeinert

Marion Gemeinert 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).

  • Glass ceramic mass and use thereof
    Patent number: 7030050
    Abstract: The invention relates to a glass ceramic mass containing at least one oxide ceramic containing barium, titanium and at least one rare earth metal Rek; and at least one glass material containing at least one oxide with boron, at least one oxide with silicon and at least one oxide with at least one bivalent metal Me2+. The glass ceramic mass is characterised in that the glass material contains at least one oxide with bismuth, especially bismuth trioxide. The oxide ceramic is especially a microwave ceramic of formula BaRek2Ti4O12, Rek being neodymium or samarium. The composition of the oxide ceramic remains essentially constant during the sintering of the glass ceramic, enabling the material properties of the glass ceramic mass, such as permittivity (20–80), quality (800–5000) and Tkf (±20 ppm/K) to be specifically predetermined. The glass ceramic mass is characterised by a densification temperature of under 910° C.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: April 18, 2006
    Assignees: Bundesanstalt fur Materialforschung und - prufung, W. C. Heraeus GmbH & Co. KG
    Inventors: Oliver Dernovsek, Markus Eberstein, Ulrich Fritz, Marion Gemeinert, Christina Modes, Gabriele Preu, Wolfgang Arno Schiller, Wolfram Wersing
  • Glass ceramic mass and use thereof
    Publication number: 20040014585
    Abstract: The invention relates to a glass ceramic mass containing at least one oxide ceramic containing barium, titanium and at least one rare earth metal Rek; and at least one glass material containing at least one oxide with boron, at least one oxide with silicon and at least one oxide with at least one bivalent metal Me2+. The glass ceramic mass is characterised in that the glass material contains at least one oxide with bismuth, especially bismuth trioxide. The oxide ceramic is especially a microwave ceramic of formula BaRek2Ti4O12, Rek being neodymium or samarium. The composition of the oxide ceramic remains essentially constant during the sintering of the glass ceramic, enabling the material properties of the glass ceramic mass, such as permittivity (20-80), quality (800-5000) and Tkf (±20 ppm/K) to be specifically predetermined. The glass ceramic mass is characterised by a densification temperature of under 910 ° C.
    Type: Application
    Filed: August 8, 2003
    Publication date: January 22, 2004
    Inventors: Oliver Dernovsek, Markus Eberstein, Ulrich Fritz, Marion Gemeinert, Christina Modes, Gabriele Preu, Wolfgang Arno Schiller, Wolfram Wersing