Patents by Inventor Holger Hellwig

Holger Hellwig 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 radiation conversion with bismuth borate crystals
    Patent number: 6264858
    Abstract: Bismuth borates in crystalline form with non-linearly optical properties. Bismuth borate crystals are used for radiation conversion. The crystal is created with non-linearly optical properties which has non-linearly optical coefficients which exceed those of crystals used hitherto in the application and which is easy, inexpensive to produce and of high optical quality.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: July 24, 2001
    Assignee: FEE - Forschungsinstitut fur Mineralische und Mettallische Werkstoffe Edelsteine/Edelmetalle GmbH
    Inventors: Ladislav Bohaty, Petra Becker, Holger Hellwig, Josef Liebertz