Patents by Inventor Augustinus Johannes Henricus Van Der Heijden

Augustinus Johannes Henricus Van Der Heijden 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 discharge lamp
    Publication number: 20030085655
    Abstract: Low-pressure mercury discharge lamp (1) comprising an at least partly substantially cylindrical discharge vessel (3) having a diameter D, wherein two electrodes are present near respective ends of said discharge vessel (3), which discharge vessel (3) is filled with a mixture of inert gasses having a pressure P and which discharge vessel (3) contains an amount of mercury, wherein D×P is at least 5.2 mPa. The invention is based on the novel understanding that a higher filling pressure of the inert gas mixture causes a lower mercury consumption in the lamp (1).
    Type: Application
    Filed: October 1, 2002
    Publication date: May 8, 2003
    Inventors: Adrianus Johannes Hendricus Petrus Van Der Pol, Augustinus Johannes Henricus Van Der Heijden, Michiel Jacobus Van Der Meer