Patents by Inventor Kerstin Hoffmann, legal representative

Kerstin Hoffmann, legal representative 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).

  • Low-pressure gas discharge lamp with a reduced argon proportion in the gas filling
    Patent number: 7948182
    Abstract: The invention relates to novel gas fillings of low-pressure gas discharge lamps for reducing the starting and arc drop voltages at low Hg vapor pressures. In favor of a mixture consisting of Ne and Kr, the Ar portion of the gas filling is considerably reduced.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: May 24, 2011
    Assignee: OSRAM Gesellschaft mit beschraenkter Haftung
    Inventors: Martin Beck, Jürgen Dichtl, Roland Hoffmann, Maria Hoffmann, legal representative, Astrid Hoffmann, legal representative, Kerstin Hoffmann, legal representative