Patents by Inventor Sylvia Frenzel

Sylvia Frenzel 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).

  • Mercury amalgams for elevated temperatures in discharge lamps
    Patent number: 7408295
    Abstract: The present invention relates to mercury amalgams in discharge lamps for use at elevated operating temperatures.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: August 5, 2008
    Inventors: Martin Beck, Sylvia Frenzel, Roland Hoffmann
  • Mercury amalgams for elevated temperatures in discharge lamps
    Publication number: 20050231095
    Abstract: The present invention relates to mercury amalgams in discharge lamps for use at elevated operating temperatures.
    Type: Application
    Filed: April 11, 2005
    Publication date: October 20, 2005
    Inventors: Martin Beck, Sylvia Frenzel, Roland Hoffmann