Patents by Inventor Robertus Keijser

Robertus Keijser 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).

  • Publication number: 20050104500
    Abstract: The invention relates to a discharge lamp (1) having an outer bulb (2) that is provided with a lamp cap (3) at one end. The outer bulb encloses a discharge vessel (4) comprising electrodes, a first current conductor (5) and a second current conductor (6) arranged at some distance from the first current conductor, which current conductors establish an electric connection between the electrodes and the lamp cap. The shortest distance between the electrodes forms a discharge axis (40) of the discharge vessel. Part of the second current conductor (6) is placed substantially sidelong to the discharge axis. According to the invention, the second current conductor (6) comprises successive parts (7,8,9) arranged sidelong to the discharge axis and at mutually different distances from said axis.
    Type: Application
    Filed: December 20, 2002
    Publication date: May 19, 2005
    Inventors: Marco Haverlag, Robertus Keijser, Pascale Hepp