Patents by Inventor Arata Ito

Arata Ito 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).

  • Method of assembling plant
    Patent number: 6244015
    Abstract: A method of assembling a large-size plant and an assembling method for reducing a term of work are disclosed. Each of a crane operator in a crane operation room and site workers in a plant construction site is equipped with a picture I/O device and a voice I/O device. The crane operator and the site workers assemble the plant while sharing picture information of the picture I/O device and voice information of the voice I/O device with each other. A site remote control room vicinal to the plant construction site is connected via a radio transmission path to a host control center. The plant si assembled while the site workers, the crane operator room, the site remote control room and the central control room share the picture information and the voice information of their own with each other.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: June 12, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Arata Ito, Shuji Hirono, Motohiko Kimura, Shigeru Kyoda, Hitoshi Sato
  • Underwater laser processing method and apparatus
    Patent number: 6084202
    Abstract: An underwater laser processing method is carried out by irradiating, through a laser beam irradiation apparatus, a laser beam having a high output, a short pulse and a visible wavelength to a surface of a structure immersed in a water to improve residual stress of a material of the surface of the structure and remove a crack or a CRUD thereof. The laser beam irradiation apparatus comprises a pulse laser device suspended into a water in which a metal material is accommodated from an upper side thereof for irradiating a laser beam having a visible wavelength to a processing position, a beam strength adjusting device for adjusting an output per 1 pulse of a laser beam generated by the pulse laser device and a mechanism for adjusting a spot diameter and a multiplexing ratio of an irradiated beam.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: July 4, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kouki Okazaki, Arata Ito, Yuji Sano, Naruhiko Mukai, Nobutada Aoki, Chikara Konagai, Muneyoshi Kikunaga
  • Underwater laser processing method and apparatus
    Patent number: 5790620
    Abstract: An underwater laser processing method is carried out by irradiating, through a laser beam irradiation apparatus, a laser beam having a high output, a short pulse and a visible wavelength to a surface of a structure immersed in a water to improve residual stress of a material of the surface of the structure and remove a crack or a CRUD thereof. The laser beam irradiation apparatus comprises a pulse laser device suspended into a water in which a metal material is accommodated from an upper side thereof for irradiating a laser beam having a visible wavelength to a processing position, a beam strength adjusting device for adjusting an output per 1 pulse of a laser beam generated by the pulse laser device and a mechanism for adjusting a spot diameter and a multiplexing ratio of an irradiated beam.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: August 4, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kouki Okazaki, Arata Ito, Yuji Sano, Naruhiko Mukai, Nobutada Aoki, Chikara Konagai, Muneyoshi Kikunaga