Patents by Inventor Yuma Takida

Yuma Takida 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).

  • Pulsed electromagnetic-wave generator and measuring apparatus
    Patent number: 10714888
    Abstract: A pulsed electromagnetic-wave generator includes an excitation light source, a laser resonator, a pulse generating unit, and a wavelength converting unit. Excitation light from the excitation light source enters the laser resonator. The pulse generating unit is configured to generate a pulsed light group including at least two or more pulses with different frequencies (?) and different oscillation timings (t) in one excitation process of the excitation light source, an oscillation frequency difference (??) between the pulses in the pulsed light group being an integral multiple of a Free Spectral Range (FSR) of the laser resonator. The pulsed light group enters the wavelength converting unit. The wavelength converting unit is configured to generate a pulsed electromagnetic wave in which a wavelength of each pulse in the pulsed light group is converted.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: July 14, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Ikeoh, Yasuhiro Higashi, Yoshio Wada, Takumi Satoh, Hiroaki Minamide, Kouji Nawata, Yuma Takida
  • PULSED ELECTROMAGNETIC-WAVE GENERATOR AND MEASURING APPARATUS
    Publication number: 20190280454
    Abstract: A pulsed electromagnetic-wave generator includes an excitation light source, a laser resonator, a pulse generating unit, and a wavelength converting unit. Excitation light from the excitation light source enters the laser resonator. The pulse generating unit is configured to generate a pulsed light group including at least two or more pulses with different frequencies (?) and different oscillation timings (t) in one excitation process of the excitation light source, an oscillation frequency difference (??) between the pulses in the pulsed light group being an integral multiple of a Free Spectral Range (FSR) of the laser resonator. The pulsed light group enters the wavelength converting unit. The wavelength converting unit is configured to generate a pulsed electromagnetic wave in which a wavelength of each pulse in the pulsed light group is converted.
    Type: Application
    Filed: March 5, 2019
    Publication date: September 12, 2019
    Inventors: Toshiyuki IKEOH, Yasuhiro Higashi, Yoshio Wada, Takumi Satoh, Hiroaki Minamide, Kouji Nawata, Yuma Takida