Patents by Inventor Robert R. M. Delen

Robert R. M. Delen 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).

  • Electric gas discharge lamp including an outer envelope and supporting frame
    Patent number: 5001384
    Abstract: Electric gas discharge lamp having a stem and a discharge vessel accommodated in an outer envelope. Resilient elements constituted by a bent wire piece are mounted on a free end portion to secure the frame and discharge vessel within the outer envelope. The bent wire pieces have a curved portion which engage the inner surface of the outer envelope which prevents scratching of the outer envelope during insertion of the stem frame into the outer envelope during lamp assembly.
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: March 19, 1991
    Assignee: U.S. Philips Corporation
    Inventors: Florentinus L. M. Bens, Robert R. M. Delen
  • Gas and/or vapor discharge lamp
    Patent number: 4144475
    Abstract: The invention relates to high pressure sodium vapor discharge lamp comprising a discharge tube and an outer bulb enveloping this tube, a glow starter being disposed in the space between that discharge tube and the outer bulb.In accordance with the invention the glow starter is resiliently clamped between the two rigid electric conductors which supply the discharge tube with current.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: March 13, 1979
    Assignee: U.S. Philips Corporation
    Inventors: Robert R. M. Delen, Duido J. J. Lenaerts