Patents by Inventor Masaaki Kimoto

Masaaki Kimoto 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).

  • Gas discharge tube capable of lighting in different colors
    Patent number: 5410216
    Abstract: A gas discharge tube that is capable of lighting in different colors. The gas discharge tube, which may contain neon and mercury vapor, and which has its inner surface coated with a photoluminescent layer, is energized with a pulse current. The resultant color of the light emitted from the gas discharge tube depends in part on the frequency of the pulse current.
    Type: Grant
    Filed: April 10, 1992
    Date of Patent: April 25, 1995
    Inventors: Masaaki Kimoto, Ryohei Itatani, Masatoshi Ryohko
  • Gas discharge tube capable of lighting in different colors
    Patent number: 5132590
    Abstract: A gas discharge tube that is capable of lighting in different colors. The gas discharge tube, which may contain neon and mercury vapor, and which has its inner surface coated with a photoluminescent layer, is energized with a pulse current. The resultant color of the light emitted from the gas discharge tube depends on the combination of the pulse shapes and duty factors constituting the pulse current.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: July 21, 1992
    Inventors: Masaaki Kimoto, Ryohei Itatani, Ryohko Masatoshi
  • Luminous gas-discharge sign panel
    Patent number: 4852285
    Abstract: A luminous gas-discharge sign panel devised so that the brightness of sign is made constant throughout the entire length of the gas-discharge path irrespective of the positional width variations of the luminous sign patterns.
    Type: Grant
    Filed: December 31, 1984
    Date of Patent: August 1, 1989
    Assignee: Kimoto Sign Co. Ltd.
    Inventor: Masaaki Kimoto