Patents by Inventor Nicolaas F. van Elderen

Nicolaas F. van Elderen 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
    Patent number: 4277715
    Abstract: A electric gas discharge lamp having a tubular ceramic discharge vessel which is provided at one end with a ceramic end plug which extends axially outside the end of the discharge vessel. The outside diameter of the projecting portion of the end plug being not more than 90% of the outside diameter of the discharge vessel.
    Type: Grant
    Filed: May 7, 1979
    Date of Patent: July 7, 1981
    Assignee: U.S. Philips Corporation
    Inventors: Jacobus M. M. Claassens, Bart van der Leeuw, Nicolaas F. van Elderen