Patents by Inventor William I. Ramberg

William I. Ramberg 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).

  • Metal halide discharge lamp having a reflective coating
    Patent number: 3963951
    Abstract: The arc tube of a high intensity arc discharge lamp is horizontally operated and has a longitudinal stripe of heat reflecting coating along the lower surface of the arc tube in order to improve lamp efficiency.
    Type: Grant
    Filed: June 20, 1975
    Date of Patent: June 15, 1976
    Assignee: GTE Sylvania Incorporated
    Inventor: William I. Ramberg