Patents by Inventor Katsuaki Akaoka

Katsuaki Akaoka 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).

  • Remote particle counter for remote measurement of the number and size distribution of suspended fine particles in the atmosphere
    Patent number: 7117101
    Abstract: A remote particle counter comprising a pulsed laser generator, laser light emitting optics, scattered light collecting optics, a high-sensitivity two-dimensional photo detector as a scattered light detecting portion having a fast gating capability such as a CCD camera, and a control and measure system, wherein suspended fine particles forming aerosols in the atmosphere which are far away from the site of laser emission are illuminated with laser light, the resulting backward scattered light from the individual fine particles is detected as image, and the number and size distribution of the suspended fine particles are measured at a remote site.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: October 3, 2006
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Akira Ohzu, Masaaki Kato, Katsuaki Akaoka, Yoichiro Maruyama
  • Remote particle counter for remote measurement of the number and size distribution of suspended fine particles in the atmosphere
    Publication number: 20040184025
    Abstract: A remote particle counter comprising a pulsed laser generator, laser light emitting optics, scattered light collecting optics, a high-sensitivity two-dimensional photo detector as a scattered light detecting portion having a fast gating capability such as a CCD camera, and a control and measure system, wherein suspended fine particles forming aerosols in the atmosphere which are far away from the site of laser emission are illuminated with laser light, the resulting backward scattered light from the individual fine particles is detected as image, and the number and size distribution of the suspended fine particles are measured at a remote site.
    Type: Application
    Filed: January 27, 2004
    Publication date: September 23, 2004
    Applicant: Japan Atomic Energy Research Institute
    Inventors: Akira Ohzu, Masaaki Kato, Katsuaki Akaoka, Yoichiro Maruyama
  • Method of enabling laser light to propagate through a medium over long distance by means of controlling its wavefront
    Patent number: 6370166
    Abstract: The wavefront of laser light as it propagates through a medium is controlled so that not only the inherent aberrations in the wavefront of the laser light itself but also the aberrations that are progressively caused by passage of laser light through the medium are effectively corrected to achieve long-distance propagation of the laser light through the medium.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: April 9, 2002
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Katsuaki Akaoka, Yoichiro Maruyama, Takashi Arisawa