Patents by Inventor Masatsugu Ozasa

Masatsugu Ozasa 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).

  • Patent number: 8333926
    Abstract: An apparatus for analyzing particles in urine comprising is disclosed that includes: a measurement specimen preparing section for preparing a measurement specimen by using a urine sample and a stain reagent; an optical detecting section comprising a light source for emitting a light to the prepared measurement specimen, a forward-scattered light receiving element for detecting forward-scattered light emitted from the specimen, a side-scattered light receiving element for detecting side-scattered light emitted from the specimen, and a fluorescence receiving element for detecting fluorescence emitted from the specimen; and a measurement section for measuring leukocytes in urine, based on the forward-scattered light, the side-scattered light and the fluorescence detected by the optical detecting section. A method for analyzing particles in urine is also disclosed.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: December 18, 2012
    Assignee: Sysmex Corporation
    Inventors: Yousuke Tanaka, Takamichi Naito, Masatsugu Ozasa, Rumi Takata
  • Publication number: 20110127444
    Abstract: A particle analyzing apparatus, comprising: a flow cell which forms a specimen flow including particles; first and second light sources; an irradiation optical system which applies lights emitted from the first and second light sources so that the lights are applied to the specimen flow; a detector which detects forward scattered light, the forward scattered light being emitted from the first light and scattered by the particle in the specimen flow, and generates a signal according to the detected scattered light; a light blocking member disposed between the flow cell and the detector; a controller which obtains characteristic parameters of the particle based on the signal from the detector; and an imaging device which captures an image of the particle in the specimen flow using the light from the second light source is disclosed. Particle imaging method is also disclosed.
    Type: Application
    Filed: November 22, 2010
    Publication date: June 2, 2011
    Inventors: Masatsugu Ozasa, Hiroyuki Kobayashi
  • Publication number: 20110104744
    Abstract: A cell analyzing apparatus, comprising: a parameter obtaining section for obtaining a characteristic parameter from a cell in a measurement sample; an imaging section for capturing an image of the cell in the measurement sample; an analyzing section for counting a cell in which the characteristic parameter meets a predetermined requirement among the cells in the measurement sample as a counting target and generating output data based on a counting result; a display section for displaying an image of the cell meeting the predetermined requirement and the output data; and an input section for receiving an instruction to specify the image displayed on the display section, wherein the analyzing section excludes a cell relevant to the specified image from the counting target and regenerates the output data is disclosed. A cell analyzing method is also disclosed.
    Type: Application
    Filed: October 28, 2010
    Publication date: May 5, 2011
    Inventors: Masatsugu Ozasa, Masaki Ishisaka, Tokihiro Kosaka, Takamichi Naito, Takeo Saitou, Shigehiro Numada
  • Publication number: 20110102792
    Abstract: An analyzer comprises: a sample stream forming section for forming a sample stream including particles; a light source; an optical fiber bundle formed by a plurality of optical fibers, into which light from the light source enters, and which emits light onto the sample stream; and an imaging device for imaging a particle in the irradiated sample stream.
    Type: Application
    Filed: October 28, 2010
    Publication date: May 5, 2011
    Inventor: Masatsugu Ozasa
  • Publication number: 20090050821
    Abstract: An apparatus, intended for use in analyzing particles in urine is disclosed, that comprising: a sample distribution section for distributing urine samples to a first aliquot and a second aliquot; a first specimen preparing section for preparing a first specimen for measuring urinary particles, containing at least erythrocytes, by mixing a first stain reagent and the first aliquot; a second specimen preparing section for preparing a second specimen for measuring bacteria by mixing a second stain reagent and the second aliquot; and an optical detecting section comprising a light source for irradiating a light to a specimen being supplied, a scattered light receiving element for detecting scattered light emitted from the specimen, and a fluorescence receiving element for detecting fluorescence emitted from the specimen. A method intended for use in analyzing particles in urine is also disclosed.
    Type: Application
    Filed: May 10, 2007
    Publication date: February 26, 2009
    Applicant: SYSMEX CORPORATION
    Inventors: Yousuke Tanaka, Junya Inoue, Masatsugu Ozasa, Yasuyuki Kawashima
  • Publication number: 20070269897
    Abstract: An apparatus for analyzing particles in urine comprising is disclosed that includes: a measurement specimen preparing section for preparing a measurement specimen by using a urine sample and a stain reagent; an optical detecting section comprising a light source for emitting a light to the prepared measurement specimen, a forward-scattered light receiving element for detecting forward-scattered light emitted from the specimen, a side-scattered light receiving element for detecting side-scattered light emitted from the specimen, and a fluorescence receiving element for detecting fluorescence emitted from the specimen; and a measurement section for measuring leukocytes in urine, based on the forward-scattered light, the side-scattered light and the fluorescence detected by the optical detecting section. A method for analyzing particles in urine is also disclosed.
    Type: Application
    Filed: May 10, 2007
    Publication date: November 22, 2007
    Applicant: SYSMEX CORPORATION
    Inventors: Yousuke Tanaka, Takamichi Naito, Masatsugu Ozasa, Rumi Takata
  • Patent number: 6750060
    Abstract: A sheath liquid for use with a particle analyzer has a refractive index of 1.3340 or more at the wavelength of sodium D line at 25° C.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: June 15, 2004
    Assignee: Sysmex Corporation
    Inventors: Masatsugu Ozasa, Junya Inoue, Masakazu Fukuda
  • Patent number: 6713019
    Abstract: A flow cytometer includes a flow cell for flowing a sample liquid in a flowing direction, to form a sample flow the sample liquid containing particles to be analyzed, a laser diode radiating a laser beam having an elliptic cross section, a beam collimating section for collimating the laser beam radiated from the laser diode, a beam spot forming section for focusing the collimated beam at the sample flow in the flow cell to form a beam spot, and a light receiving section for receiving light generated from the particles at the beam spot to detect optical information of the particles, wherein the laser diode is arranged such that a minor diameter of the elliptic section of the laser beam is parallel to the sample flow.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: March 30, 2004
    Assignee: Sysmex Corporation
    Inventors: Masatsugu Ozasa, Tatsuya Kosako
  • Publication number: 20030180955
    Abstract: A sheath liquid for use with a particle analyzer has a refractive index of 1.3340 or more at the wavelength of sodium D line at 25° C.
    Type: Application
    Filed: March 25, 2003
    Publication date: September 25, 2003
    Inventors: Masatsugu Ozasa, Junya Inoue, Masakazu Fukuda
  • Publication number: 20020141902
    Abstract: A flow cytometer includes a flow cell for flowing a sample liquid in a flowing direction, to form a sample flow the sample liquid containing particles to be analyzed, a laser diode radiating a laser beam having an elliptic cross section, a beam collimating section for collimating the laser beam radiated from the laser diode, a beam spot forming section for focusing the collimated beam at the sample flow in the flow cell to form a beam spot, and a light receiving section for receiving light generated from the particles at the beam spot to detect optical information of the particles, wherein the laser diode is arranged such that a minor diameter of the elliptic section of the laser beam is parallel to the sample flow.
    Type: Application
    Filed: March 27, 2002
    Publication date: October 3, 2002
    Inventors: Masatsugu Ozasa, Tatsuya Kosako