Patents by Inventor Norbert Unzner

Norbert Unzner 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).

  • Ballast for a discharge lamp
    Patent number: 7053564
    Abstract: The invention relates to ballast for a discharge lamp (16), comprising a direct-current supply phase (2), semiconductor switches (10, 11), operated at a high-frequency clock frequency for modifying the direction of current through the discharge lamp (16), an ignition transformer (15), which can be supplied with the direct current of the direct-current supply phase (2) via a series capacitor (14) and a choke inductance (17) that is connected to an electrode of the discharge of the discharge lamp (16), said electrode not being connected to the ignition transformer (15).
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: May 30, 2006
    Assignee: B & S Elektronische Geräte GmbH
    Inventors: Ulrich Klipstein, Norbert Unzner, Wilfried Brauckmann
  • Ballast for a discharge lamp
    Publication number: 20050212457
    Abstract: The invention relates to ballast for a discharge lamp (16), comprising a direct-current supply phase (2), semiconductor switches (10, 11), operated at a high-frequency clock frequency for modifying the direction of current through the discharge lamp (16), an ignition transformer (15), which can be supplied with the direct current of the direct-current supply phase (2) via a series capacitor (14) and a choke inductance (17) that is connected to an electrode of the discharge of the discharge lamp (16), said electrode not being connected to the ignition transformer (15).
    Type: Application
    Filed: March 6, 2003
    Publication date: September 29, 2005
    Inventors: Ulrich Klipstein, Norbert Unzner, Wilfried Brauckmann