Patents by Inventor Stephan Knoener

Stephan Knoener 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 having at least two crystal phases, process for producing a glass-ceramic and its use
    Patent number: 8772188
    Abstract: A glass-ceramic having at least two crystal phases, wherein at least one crystal phase has a positive temperature dependence of the resonance frequency ?f, at least one crystal phase has a negative temperature dependence of the resonance frequency ?f and the glass-ceramic has a resulting temperature dependence of the resonance frequency ?f of 0 ppm/K with a maximum deviation of +/?20 ppm/K, is described. Furthermore, a process for producing such a glass-ceramic and the use of the glass-ceramic are described.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: July 8, 2014
    Assignee: Schott AG
    Inventors: Martin Letz, Stephan Knoener, Martina Dressler, Daniela Seiler, Bernd Hoppe, Michael Kluge
  • GLASS-CERAMIC HAVING AT LEAST TWO CRYSTAL PHASES, PROCESS FOR PRODUCING A GLASS-CERAMIC AND ITS USE
    Publication number: 20130237400
    Abstract: A glass-ceramic having at least two crystal phases, wherein at least one crystal phase has a positive temperature dependence of the resonance frequency ?f, at least one crystal phase has a negative temperature dependence of the resonance frequency ?f and the glass-ceramic has a resulting temperature dependence of the resonance frequency ?f of 0 ppm/K with a maximum deviation of +/?20 ppm/K, is described. Furthermore, a process for producing such a glass-ceramic and the use of the glass-ceramic are described.
    Type: Application
    Filed: March 12, 2012
    Publication date: September 12, 2013
    Applicant: SCHOTT AG
    Inventors: Martin Letz, Stephan Knoener, Martina Dressler, Daniela Seiler, Bernd Hoppe, Michael Kluge
  • GLASS CERAMICS FOR USE AS A DIELECTRIC FOR GIGAHERTZ APPLICATIONS
    Publication number: 20130120193
    Abstract: A glass-ceramic which is particularly suitable as dielectric for use in the high-frequency range, in particular as dielectric resonator, as electronic frequency filter element or as antenna element is disclosed. The glass-ceramic has at least the following constituents (in mol % on an oxide basis): 5-50% of SiO2, 0-20% of Al2O3, 0-25% of B2O3, 0-25% of BaO, 10-60% of TiO2, 5-35% of Re2O3, where Ba can be partly replaced by Sr, Ca, Mg, where Re is a lanthanide or yttrium and where Ti can be partly replaced by Zr, Hf, Y, Nb, V, Ta.
    Type: Application
    Filed: November 16, 2011
    Publication date: May 16, 2013
    Applicant: SCHOTT AG
    Inventors: Bernd Hoppe, Michael Kluge, Stephan Knoener, Martin Letz, Bernd Ruedinger, Daniela Seiler