Patents by Inventor Hendricus E. M. C. Vos

Hendricus E. M. C. Vos 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 discharge lamp with annular current conductor
    Patent number: 4160930
    Abstract: The current leadthrough for the auxiliary electrode of a discharge lamp with ceramic lamp vessel is constructed as a cylindrical tube concentric with the leadthrough of the main electrode. The cylindrical tube which serves as a current leadthrough can extend in the lamp vessel and serve itself as an auxiliary electrode. This construction avoids cracking of the lamp vessel. Niobium and tantalum, tungsten molybdenum, rhenium and alloys thereof may be used for the current leadthrough.
    Type: Grant
    Filed: September 16, 1976
    Date of Patent: July 10, 1979
    Assignee: U.S. Philips Corporation
    Inventors: Antonius J. G. C. Driessen, Hendricus E. M. C. Vos