Patents by Inventor Thomas S. Yong

Thomas S. Yong 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).

  • Arc-extinguishing ampul and fluorescent lamp having such ampul mounted on each electrode structure
    Patent number: 4495440
    Abstract: An arc-extinguishing ampul and a low-pressure arc discharge lamp, such as a fluorescent lamp, having such ampul on each electrode structure, the ampul comprising a thin-walled glass body enclosing an arc-extinguishing gas, at least one electrically conductive support wire, and a heat-conductive coating covering the outer surface of the ampul and portions of the support wire. Upon depletion of the electron-emissive coating on one electrode filament at the end of the useful life of the lamp, the arc discharge is attracted to the ampul by the support wire. The heat of the arc softens and melts the ampul to the point where the arc-extinguishing gas within the ampul escapes and renders the lamp inoperable without loss of the lamp's hermetic seal.
    Type: Grant
    Filed: August 23, 1982
    Date of Patent: January 22, 1985
    Assignee: GTE Products Corporation
    Inventors: Steven C. Schlitt, Thomas S. Yong, William J. Roche, John W. Anderson, Jr.
  • Method of making a mercury dispenser, getter and shield assembly for a fluorescent lamp
    Patent number: 4308650
    Abstract: A fluorescent lamp operating on reduced energy consumption includes a unique mount which carries a shield providing both a getter and a mercury dispenser. The lamp has a preferable fill of 80% neon and 20% krypton at a pressure of 2.0 Torr.
    Type: Grant
    Filed: December 28, 1979
    Date of Patent: January 5, 1982
    Assignee: GTE Products Corporation
    Inventors: Rafael J. Hernandez, Thomas S. Yong, Tadius T. Sadoski