Patents by Inventor Philip B. Newell

Philip B. Newell 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).

  • Methods for removing contaminants from arc discharge lamps
    Patent number: 5342233
    Abstract: A method for removing contaminants from an arc tube includes introducing an inert gas into the arc tube through a conduit extending through the lamp tubulation and exhausting the gas through the space between the conduit and the wall of the lamp tubulation. Contaminated gas thereby always flows away from the arc tube. The arc tube can be heated during the gas flushing process to release adsorbed water and vaporize volatile oxides. Gas is preferably flushed through the lamps tubulation during and after press sealing of electrodes into the arc tube to remove contaminants introduced during press sealing.
    Type: Grant
    Filed: September 3, 1992
    Date of Patent: August 30, 1994
    Assignee: Osram Sylvania Inc.
    Inventor: Philip B. Newell
  • Methods for removing contaminants from arc discharge lamps
    Patent number: 5176558
    Abstract: A method for removing contaminants from an arc tube includes introducing an inert gas into the arc tube through a conduit extending through the lamp tubulation and exhausting the gas through the space between the conduit and the wall of the lamp tubulation. Contaminated gas thereby always flows away from the arc tube. The arc tube can be heated during the gas flushing process to release adsorbed water and vaporize volatile oxides. Gas is preferably flushed through the lamps tubulation during and after press sealing of electrodes into the arc tube to remove contaminants introduced during press sealing.
    Type: Grant
    Filed: May 1, 1991
    Date of Patent: January 5, 1993
    Assignee: GTE Products Corporation
    Inventor: Philip B. Newell