Patents by Inventor Kazutomo Takami

Kazutomo Takami 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).

  • Discolored teeth bleaching system
    Patent number: 6783363
    Abstract: A system for bleaching discolored teeth is provided, and this system has a function irradiating light emitted from a light-emitting section to the surface of teeth applied with a chemical agent including titanium dioxide and hydrogen peroxide, a irradiation energy of wavelength 380 to 420 nm of the light emitted from the light-emitting section is at least 37 mW/cm2 and the ratio of irradiation energy of wavelength 380 to 420 nm with respect to the irradiation energy of wavelength 200 to 800 nm thereof is at least 36% at this light-emitting section, and whereby it is possible to obtain high bleaching effect of the teeth, to reduce the heat applied to the teeth to a low level (no more than 40° C.) and to reduce emission of ultraviolet light that has an adverse effect on the human body to a low level.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: August 31, 2004
    Assignees: Ushio Denki Kabushiki Kaisya, EVIS Inc, National Institute of Advanced Industrial Science and Technology
    Inventors: Hiromasa Eguchi, Kazutomo Takami, Takuro Ishibashi, Toru Nonami
  • Discolored teeth bleaching system
    Publication number: 20020177097
    Abstract: A system for bleaching discolored teeth is provided, and this system has a function irradiating light emitted from a light-emitting section to the surface of teeth applied with a chemical agent including titanium dioxide and hydrogen peroxide, a irradiation energy of wavelength 380 to 420 nm of the light emitted from the light-emitting section is at least 37 mW/cm2 and the ratio of irradiation energy of wavelength 380 to 420 nm with respect to the irradiation energy of wavelength 200 to 800 nm thereof is at least 36% at this light-emitting section, and whereby it is possible to obtain high bleaching effect of the teeth, to reduce the heat applied to the teeth to a low level (no more than 40° C.) and to reduce emission of ultraviolet light that has an adverse effect on the human body to a low level.
    Type: Application
    Filed: April 1, 2002
    Publication date: November 28, 2002
    Applicant: Ushio Denki Kabushiki Kaisya
    Inventors: Hiromasa Eguchi, Kazutomo Takami, Takuro Ishibashi, Toru Nonami