Patents by Inventor Thomas AUBRUNNER

Thomas AUBRUNNER 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).

  • Method for determining and regulating a diameter of a single crystal during pulling of the single crystal
    Patent number: 10738392
    Abstract: The diameter (dK) of a cylindrical section and of an end cone of a single crystal being pulled from a melt in a crucible, is determined by measuring the diameter (dK) of the single crystal at an interface with the melt while taking into account a lowering rate (vs) of a surface of the melt relative to the crucible, a lifting rate (vK) with which the crystal is raised relative to the crucible, and a conservation of mass, wherein a diameter of a cylindrical section of the single crystal, determined by means of observing a bright ring on the surface of the melt, and is used for a correction, a plausibility check or a comparison of the diameter (dK) of the single crystal.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: August 11, 2020
    Assignee: SILTRONIC AG
    Inventors: Thomas Schroeck, Thomas Aubrunner
  • METHOD FOR DETERMINING AND REGULATING A DIAMETER OF A SINGLE CRYSTAL DURING PULLING OF THE SINGLE CRYSTAL
    Publication number: 20180363163
    Abstract: The diameter (dK) of a cylindrical section and of an end cone of a single crystal being pulled from a melt in a crucible, is determined by measuring the diameter (dK) of the single crystal at an interface with the melt while taking into account a lowering rate (vS) of a surface of the melt relative to the crucible, a lifting rate (vK) with which the crystal is raised relative to the crucible, and a conservation of mass, wherein a diameter of a cylindrical section of the single crystal, determined by means of observing a bright ring on the surface of the melt, and is used for a correction, a plausibility check or a comparison of the diameter (dK) of the single crystal.
    Type: Application
    Filed: January 24, 2017
    Publication date: December 20, 2018
    Applicant: SILTRONIC AG
    Inventors: Thomas SCHROECK, Thomas AUBRUNNER