Patents by Inventor Kouzou Tsunoyama

Kouzou Tsunoyama 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 laser emission spectroscopical analysis and apparatus therefor
    Patent number: 4690558
    Abstract: In a method of laser emission spectroscopical analysis, wherein a light emitted from the surface of a sample when a laser beam is irradiated onto the surface of the sample is spectroscopically analyzed, an emission mode of the laser beam is fixed to a gauss distribution type TEM.sub.00 mode to avoid variations in an intensity distribution due to a change in mode, and an analyzed value is obtained from an intensity of a spectral line of an element to be measured when an intensity of a preset spectral line or an intensity ratio between a pair of preset spectral lines is within a predetermined range, so that the influence of wide fluctuations in an evaporation and an excitation processes occurring on the surface of the sample can be eliminated, thereby improving the accuracy of analysis.
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: September 1, 1987
    Assignee: Kawasaki Steel Corporation
    Inventors: Kouzou Tsunoyama, Yoshiharu Ohashi, Yasuko Furunushi, Motoyuki Konishi
  • Method of performing continuous on-line laser emission spectroscopic analysis on a flowing fluid sample by laser and apparatus therefor
    Patent number: 4652128
    Abstract: A focusing lens having a focal length f is provided at a position spaced a distance L apart from a substance to be measured in the fluid state, the relationship between L and f is controlled, so that the formula:0.95f.ltoreq.L.ltoreq.1.05fis constantly satisfied, and the light emitted when a high output pulse laser irradiates the surface of the substance to be measured is analyzed spectroscopically so that the influence of variations on the surface of the substance to be measured can be avoided and a stabilized laser emission spectroscopically analysis on-line can be conducted as the substance to be measured flows.
    Type: Grant
    Filed: December 13, 1984
    Date of Patent: March 24, 1987
    Assignees: Kawasaki Steel Corporation, Japan Spectroscopic Co., Ltd, Spectral Instrument Co.
    Inventors: Kouzou Tsunoyama, Wataru Tanimoto, Yoshiharu Ohashi, Shigeyuki Kimura, Fumio Asakawa
  • Method of laser emission spectroscopic analysis of steel and apparatus therefor
    Patent number: 4645342
    Abstract: When a light emitted during the irradiation by a laser beam onto the surface of steel is spectrally separated and elements contained in the steel are analyzed quantitatively:an infrared pulse laser beam irradiates a sample such that an energy density on the surface of the sample becomes 2.0.times.10.sup.9 W/mm.sup.
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: February 24, 1987
    Assignee: Kawasaki Steel Corp.
    Inventors: Wataru Tanimoto, Kouzou Tsunoyama