Patents by Inventor Hachiro Yasuda

Hachiro Yasuda 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: 10082453
    Abstract: An airborne microbial measurement apparatus and a measurement method thereof are provided. An airborne microbial measurement apparatus according to an embodiment includes a discharge apparatus including a discharge electrode and a voltage supply unit applying a high voltage to the discharge electrode. A substrate is provided to a side of the discharge apparatus to collect an airborne microbe from air by a high voltage applied to the discharge electrode. A reagent injection apparatus supplies a dyeing reagent to the microbe collected on the substrate or a DNA of the microbe. A light emission measurement apparatus senses a quantity of light generated from the DNA to which the dyeing reagent is supplied. The discharge apparatus includes a controller controlling the voltage supply unit so that the voltage is applied to collect the airborne microbe or destroy an external wall of the collected airborne microbe.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: September 25, 2018
    Assignees: LG ELECTRONICS INC., NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGY
    Inventors: Chulwoo Park, Sunghwa Lee, Akira Mizuno, Kazunori Takashima, Hirofumi Kurita, Hachiro Yasuda
  • Publication number: 20170016811
    Abstract: An airborne microbial measurement apparatus and a measurement method thereof are provided. An airborne microbial measurement apparatus according to an embodiment includes a discharge apparatus including a discharge electrode and a voltage supply unit applying a high voltage to the discharge electrode. A substrate is provided to a side of the discharge apparatus to collect an airborne microbe from air by a high voltage applied to the discharge electrode. A reagent injection apparatus supplies a dyeing reagent to the microbe collected on the substrate or a DNA of the microbe. A light emission measurement apparatus senses a quantity of light generated from the DNA to which the dyeing reagent is supplied. The discharge apparatus includes a controller controlling the voltage supply unit so that the voltage is applied to collect the airborne microbe or destroy an external wall of the collected airborne microbe.
    Type: Application
    Filed: September 19, 2014
    Publication date: January 19, 2017
    Inventors: Chulwoo PARK, Sunghwa LEE, Akira MIZUNO, Kazunori TAKASHIMA, Hirofumi KURITA, Hachiro YASUDA
  • Patent number: 8778154
    Abstract: To provide a system by which evaluation of circumstances of contamination by microparticles having nucleic acid can be performed rapidly and accurately. The theme is achieved by a system for measuring microparticles that includes: (1) a microparticle adhesion step of adhering the microparticles having nucleic acid to a microparticle adhesion member; (2) a membrane breakage step of breaking membranes of the adhered microparticles by electrical discharge; (3) an electrophoresis step of electrophoresing the microparticles in a thickness direction of a gel to make the nucleic acid in the microparticles migrate from a negative electrode side toward a positive electrode side and adhere the nucleic acid on a surface of a nucleic acid detection member; and (4) a nucleic acid measurement step of fluorescently staining the surface of the nucleic acid detection member to measure a concentration of the nucleic acid.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: July 15, 2014
    Assignee: Toyohashi University of Technology
    Inventors: Akira Mizuno, Kazunori Takashima, Hachiro Yasuda, Masudur Rahman
  • Publication number: 20100089754
    Abstract: To provide a system by which evaluation of circumstances of contamination by microparticles having nucleic acid can be performed rapidly and accurately. The theme is achieved by a system for measuring microparticles that includes: (1) a microparticle adhesion step of adhering the microparticles having nucleic acid to a microparticle adhesion member; (2) a membrane breakage step of breaking membranes of the adhered microparticles by electrical discharge; (3) an electrophoresis step of electrophoresing the microparticles in a thickness direction of a gel to make the nucleic acid in the microparticles migrate from a negative electrode side toward a positive electrode side and adhere the nucleic acid on a surface of a nucleic acid detection member; and (4) a nucleic acid measurement step of fluorescently staining the surface of the nucleic acid detection member to measure a concentration of the nucleic acid.
    Type: Application
    Filed: December 17, 2009
    Publication date: April 15, 2010
    Applicant: Toyohashi University of Technology
    Inventors: Akira MIZUNO, Kazunori Takashima, Hachiro Yasuda, Masudur Rahman
  • Patent number: 4755363
    Abstract: Preparation of biopolymer crystals is made automatic by an apparatus comprising a reactor system, a solution liquid supply system, temperature control system, and a control unit controlling the supply system and the temperature control system, and preferably, an image recording system.
    Type: Grant
    Filed: October 29, 1986
    Date of Patent: July 5, 1988
    Assignee: Fujitsu Limited
    Inventors: Shozo Fujita, Hachiro Yasuda, Akio Sugama, Naomi Nakane, Teruo Yagishita