Patents by Inventor Jan R. deBie

Jan R. deBie 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).

  • High-pressure discharge lamp with shielded electrode
    Patent number: 4621216
    Abstract: The invention relates to a high-pressure discharge lamp having a discharge envelope (3) with a ceramic wall provided with at least one electrode (4). The electrode (4) comprises a rod (41) which is connected to a tubular lead-through member (40) and on which an emitter-containing element (42) is arranged. By means of a screening body (43), the emitter-containing element (42) is screened on its outer side. According to the invention, the screening body (43) extends with a constant cross-section from the tubular lead-through member (40) to the end of the emitter-containing element (42) facing the discharge path. Thus, an improved temperature control is obtained within the discharge envelope (3) during operation of the lamp.
    Type: Grant
    Filed: April 23, 1984
    Date of Patent: November 4, 1986
    Assignee: U.S. Philips Corporation
    Inventors: Johan Liebe, Andreas S. G. Geven, Antonius J. G. C. Driessen, Jan R. deBie