Patents by Inventor William Joseph Lang

William Joseph Lang 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).

  • Light bulb with glass envelope having light transmission of a wavelength only up to 700 nm
    Patent number: 7106002
    Abstract: A light bulb that is with glass envelope having light transmission of a wavelength only up to 700 nm has an incandescent filament enclosed in a glass envelope that transmits substantially no detectable amount of light of a wave length greater than 700 nanometers.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: September 12, 2006
    Assignee: Illumination Technology, Inc.
    Inventors: William Joseph Lang, Ralph E. Johnson, John B. Hartley
  • Light bulb with glass envelope having light transmission of a wavelength only up to 700mm
    Patent number: 5686786
    Abstract: A light bulb that is suitable for use in conjunction with night vision equipment has an incandescent filament enclosed in a glass envelope that transmits substantially no detectable amount of light of a wave length greater than 700 nanometers.
    Type: Grant
    Filed: March 8, 1995
    Date of Patent: November 11, 1997
    Assignee: Illumination Technology, Inc.
    Inventors: William Joseph Lang, John B. Hartley, Ralph E. Johnson