Patents by Inventor Hitoshi OKAI

Hitoshi OKAI 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).

  • Plasma spectrochemical analysis method and plasma spectrochemical analyzer
    Patent number: 10101275
    Abstract: The present invention provides a plasma spectrochemical analysis method that can be carried out easily and achieves high analytical sensitivity, and includes: a step of concentrating an analyte in a sample in the vicinity of at least one of a pair of electrodes by applying a voltage to the pair of electrodes in the presence of the sample; and a step of generating plasma by applying a voltage to the pair of electrodes and detecting light emitted from the analyte excited by the plasma.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: October 16, 2018
    Assignee: ARKRAY, Inc.
    Inventors: Yasunori Shiraki, Hitoshi Okai
  • Mixing apparatus
    Patent number: 9409175
    Abstract: A mixing apparatus includes: a mixing container with a discharge port for discharging mixed liquid; a filter paper covering the discharge port to temporarily retain the liquid; a receiving unit with a waste liquid collecting portion for receiving a first liquid discharged from the discharge port through the filter paper, and a measuring portion for receiving a second liquid subjected to treatment different from treatment for the first liquid; and an operation portion for enabling selection between a first receiving state in which the waste liquid collecting portion receives the first liquid and a second receiving state in which the measuring portion receives the second liquid, and also for controlling the movement of the first liquid or the second liquid.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: August 9, 2016
    Assignee: ARKRAY, Inc.
    Inventors: Takashige Tanaka, Junichi Oka, Daisuke Matsumoto, Hitoshi Okai
  • Plasma Spectrochemical Analysis Method and Plasma Spectrochemical Analyzer
    Publication number: 20160202187
    Abstract: The present invention provides a plasma spectrochemical analysis method that can be carried out easily and achieves high analytical sensitivity, and includes: a step of concentrating an analyte in a sample in the vicinity of at least one of a pair of electrodes by applying a voltage to the pair of electrodes in the presence of the sample; and a step of generating plasma by applying a voltage to the pair of electrodes and detecting light emitted from the analyte excited by the plasma.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 14, 2016
    Applicant: ARKRAY, Inc.
    Inventors: Yasunori Shiraki, Hitoshi Okai
  • MIXING APPARATUS
    Publication number: 20130224089
    Abstract: A mixing apparatus includes: a mixing container with a discharge port for discharging mixed liquid; a filter paper covering the discharge port to temporarily retain the liquid; a receiving unit with a waste liquid collecting portion for receiving a first liquid discharged from the discharge port through the filter paper, and a measuring portion for receiving a second liquid subjected to treatment different from treatment for the first liquid; and an operation portion for enabling selection between a first receiving state in which the waste liquid collecting portion receives the first liquid and a second receiving state in which the measuring portion receives the second liquid, and also for controlling the movement of the first liquid or the second liquid.
    Type: Application
    Filed: February 20, 2013
    Publication date: August 29, 2013
    Inventors: Takashige TANAKA, Junichi OKA, Daisuke MATSUMOTO, Hitoshi OKAI