Patents by Inventor Kouki Okazaki

Kouki Okazaki 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).

  • 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