Patents by Inventor Masahiro Ohno

Masahiro Ohno 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 and apparatus for measuring immunological reaction with the aid of fluctuation in intensity of scattered light
    Patent number: 4826319
    Abstract: A coherent laser light flux is projected into a cell made of transparent quartz and light scattered from particles suspended in an antigen-antibody reaction liquid contained in the cell is detected by a photomultiplier by means of a collimator. An output electrical signal from the photomultiplier is sampled at different time instances and samplings are supplied to a fast Fourier transformer to derive a plurality of power spectrum desnities of fluctuation in intensity of the scattered light. A plurality of power spectrum densities are averaged to generate a mean power spectrum density. An amount of antigen contained in the reaction liquid is measured in accordance with the mean power spectrum density.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: May 2, 1989
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Akihiro Namba, Fumio Uchino, Hitoshi Tateoka, Masahiro Ohno, Outaro Ando, Kouichi Karaki, Tatsuo Nagasaki
  • Method and apparatus for measuring immunological reaction with the aid of fluctuation in intensity of scattered light
    Patent number: 4762413
    Abstract: A coherent laser light flux is projected into a cell made of transparent quartz and light scattered from particles suspended in an antigen-antibody reaction liquid contained in the cell is detected by a photomultiplier by means of a collimator. An output electrical signal from the photomultiplier is sampled at different time instances and samplings are supplied to a fast Fourier transformer to derive a plurality of power spectrum densities of fluctuation in intensity of the scattered light. A plurality of power spectrum densities are averaged to generate a mean power spectrum density. An amount of antigen contained in the reaction liquid is measured in accordance with the mean power spectrum density.
    Type: Grant
    Filed: August 27, 1985
    Date of Patent: August 9, 1988
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Akihiro Namba, Fumio Uchino, Hitoshi Tateoka, Masahiro Ohno, Outaro Ando, Kouichi Karaki, Tatsuo Nagasaki