Patents by Inventor Masayuki Shiina

Masayuki Shiina 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).

  • Publication number: 20230294113
    Abstract: A washing liquid distribution element attached to an upper portion of a rotor body includes an upper distribution element and a lower distribution element. A washing liquid is supplied from a washing liquid introduction port during rotation of a rotor and enters a recessed inner portion of the lower distribution element. The washing liquid entered in the inner portion moves from the vicinity of rotation center toward a radially outer side to climb an inclined part by centrifugal force. Washing liquid passages are formed in a radial pattern at a lower annular part at a tip of the inclined part, and the washing liquid is discharged radially outward from discharge ports of the washing liquid passages. Formation of the inclined part makes it possible to evenly distribute the washing liquid into test tubes.
    Type: Application
    Filed: June 29, 2021
    Publication date: September 21, 2023
    Applicant: Eppendorf Himac Technologies Co., Ltd.
    Inventors: Ryo Sato, Masayuki Shiina, Hidetaka Osawa, Ken Asakura, Hiroshi Hayasaka
  • Patent number: 11417501
    Abstract: The plasma processing apparatus has a plasma processing chamber where plasma processing of the sample is performed, and plasma power supply that supplies radio frequency electric power for generating plasma. The radio frequency electric power is time modulated by a pulse wave having a first period and a second period that are repeated periodically. The pulse wave of the first period has first amplitude and the pulse wave of the second period has second amplitude which is a limited value smaller than the first amplitude. The extinction of the plasma, which is generated during the first period having the first amplitude, is maintained during the second period having the second amplitude with a predetermined dissociation.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: August 16, 2022
    Assignee: HITACHI HIGH-TECH CORPORATION
    Inventors: Masayuki Shiina, Naoki Yasui, Tetsuo Ono
  • Publication number: 20220184639
    Abstract: In a cell washing centrifuge for washing living cells such as blood cells, control of the remaining amount of a supernatant according to the related art greatly depends on controlling the rotation speed of a motor, and thus a highly accurate motor control part is required to prevent overshooting or the like. In place of the related art, an easy control method is required.
    Type: Application
    Filed: April 24, 2020
    Publication date: June 16, 2022
    Applicant: Eppendorf Himac Technologies Co., Ltd.
    Inventors: Masayuki Shiina, Hidetaka Osawa, Ken Asakura, Hiroshi Hayasaka
  • Publication number: 20210398777
    Abstract: The plasma processing apparatus has a plasma processing chamber where plasma processing of the sample is performed, and plasma power supply that supplies radio frequency electric power for generating plasma. The radio frequency electric power is time modulated by a pulse wave having a first period and a second period that are repeated periodically. The pulse wave of the first period has first amplitude and the pulse wave of the second period has second amplitude which is a limited value smaller than the first amplitude. The extinction of the plasma, which is generated during the first period having the first amplitude, is maintained during the second period having the second amplitude with a predetermined dissociation.
    Type: Application
    Filed: September 2, 2021
    Publication date: December 23, 2021
    Inventors: Masayuki SHIINA, Naoki YASUI, Tetsuo ONO
  • Publication number: 20170092468
    Abstract: The plasma processing apparatus has a plasma processing chamber where plasma processing of the sample is performed, and plasma power supply that supplies radio frequency electric power for generating plasma. The radio frequency electric power is time modulated by a pulse wave having a first period and a second period that are repeated periodically. The pulse wave of the first period has first amplitude and the pulse wave of the second period has second amplitude which is a limited value smaller than the first amplitude. The extinction of the plasma, which is generated during the first period having the first amplitude, is maintained during the second period having the second amplitude with a predetermined dissociation.
    Type: Application
    Filed: September 9, 2016
    Publication date: March 30, 2017
    Inventors: Masayuki SHIINA, Naoki YASUI, Tetsuo ONO
  • Publication number: 20140002091
    Abstract: An electric operating system for a construction machine includes a first insulation resistance degradation detection device including a first voltage waveform generation device and a first detection section. The first detection section is connected to an electrical storage device and to the first voltage waveform generation device with respect to a relay and is adapted to detect degradation in the insulation resistance of the electrical storage device by measuring waveform changes input from the first voltage waveform generation device. A second insulation resistance degradation detection device includes a second voltage waveform generation device and a second detection section connected to a drive system and to the second voltage waveform generation device with respect to the relay, and is adapted to detect degradation in the insulation resistance of the drive system by measuring waveform changes input from the second voltage waveform generation device.
    Type: Application
    Filed: March 13, 2012
    Publication date: January 2, 2014
    Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Manabu Edamura, Takenori Hiroki, Masayuki Shiina, Kouichi Shibata