Patents by Inventor Ludwig Thanner

Ludwig Thanner 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 the diameter of a growing monocrystal
    Patent number: 5746825
    Abstract: A method and a device is provided for determining the diameter of a monocrystal growing at a crystallization boundary during the pulling of the monocrystal from a melt. The method includes imaging a part of the crystallization boundary on at least one mirror, observing the mirror image and determining the diameter of the monocrystal from the observed relative position of the crystallization boundary on the mirror image.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: May 5, 1998
    Assignee: Wacker Siltronic Gesellschaft fur Halbleitermaterialien AG
    Inventors: Wilfried Von Ammon, Herbert Weidner, Ludwig Thanner