Patents by Inventor Yoshitaka Chigi

Yoshitaka Chigi 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).

  • Ultraviolet light irradiation device
    Patent number: 8796949
    Abstract: The present invention provides an ultraviolet light irradiation device having a planer UV light source in which the irradiation intensity of UV light can be adjusted finely in a wider range. The ultraviolet light irradiation device of the present invention comprises an UV light source and a housing that holds the planer UV light source. In the UV light source, a plurality of thin plasma tubes, each of which has an UV phosphor layer formed therein, are arranged in parallel with each other on an electrode support sheet, and drive circuits apply a pulse voltage to electrode pairs provided between the electrode support sheet and an array of the thin plasma tubes. A control circuit controls a factor of the pulse voltage to be applied to the electrode pairs so as to adjust the irradiation intensity of the UV light.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: August 5, 2014
    Assignees: Shinoda Plasma Co., Ltd., Yumex Inc.
    Inventors: Kenji Awamoto, Bingang Guo, Koji Shinohe, Tsutae Shinoda, Yoshitaka Chigi, Tetsuro Nishimoto, Hiroyuki Tanaka, Mikihiro Kobayashi
  • ULTRAVIOLET LIGHT IRRADIATION DEVICE
    Publication number: 20110227501
    Abstract: The present invention provides an ultraviolet light irradiation device having a planer UV light source in which the irradiation intensity of UV light can be adjusted finely in a wider range. The ultraviolet light irradiation device of the present invention comprises an UV light source and a housing that holds the planer UV light source. In the UV light source, a plurality of thin plasma tubes, each of which has an UV phosphor layer formed therein, are arranged in parallel with each other on an electrode support sheet, and drive circuits apply a pulse voltage to electrode pairs provided between the electrode support sheet and an array of the thin plasma tubes. A control circuit controls a factor of the pulse voltage to be applied to the electrode pairs so as to adjust the irradiation intensity of the UV light.
    Type: Application
    Filed: March 11, 2011
    Publication date: September 22, 2011
    Applicants: SHINODA PLASMA CO., LTD., YUMEX INC.
    Inventors: Kenji AWAMOTO, Bingang Guo, Koji Shinohe, Tsutae Shinoda, Yoshitaka Chigi, Tetsuro Nishimoto, Hiroyuki Tanaka, Mikihiro Kobayashi