Patents by Inventor Tatsushi Fujino

Tatsushi Fujino 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).

  • Variable color discharge device
    Patent number: 5363019
    Abstract: A discharge tube including a tubular vessel which is filled with gases, and including a first gas and second gas, the first and second gases being different in excitation level and luminous color from each other. A first electrode unit axially applies an electric field to the vessel to generate a positive column in the vessel. A second electrode unit applies an electric field to the vessel to generate a negative glow in an area, the area extending substantially along a wall surface of the vessel and confronting the positive column generated by the electric field applied by the first electrode.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: November 8, 1994
    Assignee: Research Institute For Applied Sciences
    Inventors: Ryohei Itatani, Masatoshi Ryoko, Tatsushi Fujino