Patents by Inventor Lambert Christian Ida Kaldenhoven

Lambert Christian Ida Kaldenhoven 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 mercury-vapor discharge lamp and amalgam
    Publication number: 20010030506
    Abstract: A low-pressure mercury-vapor discharge lamp is provided with a discharge vessel (10). The discharge vessel (10) encloses a discharge space (11) provided with a filling of mercury and an inert gas in a gastight manner. The discharge vessel (10) is provided with an amalgam which communicates with the discharge space (11). The discharge lamp comprises means for maintaining an electric discharge in the discharge vessel (10). The discharge lamp is characterized in that the amalgam comprises a bismuth-lead amalgam having a lead content in the range from 35≦Pb≦60 at. %, a bismuth content in the range from 40≦Bi≦65 at. %, and a mercury content in the range from 0.05≦Hg≦1 at. %. Preferably, the amalgam additionally comprises gold with a gold content in the range from 0.1≦Au≦20 at. %. Preferably, the gold content is in the range from 8≦Au≦12 at. %.
    Type: Application
    Filed: March 19, 2001
    Publication date: October 18, 2001
    Applicant: U.S. PHILIPS CORPRORATION
    Inventors: Martijn Henri Richard Lankhorst, Wilhelmus Cornelis Keur, Lambert Christian Ida Kaldenhoven