Patents by Inventor Yoshinori Tobita

Yoshinori Tobita 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: 10746307
    Abstract: Particle scattering is suppressed only by controlling the gate valve in opening the gate valve with the internal pressure of the chamber being matched to the atmospheric pressure.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: August 18, 2020
    Assignee: V-Tex Corporation
    Inventors: Hideaki Nagai, Tomohiro Sawahata, Katsuyuki Saitoh, Shuichi Araki, Yoshinori Tobita, Mitsuhiro Ikeda
  • Publication number: 20190346047
    Abstract: Particle scattering is suppressed only by controlling the gate valve in opening the gate valve with the internal pressure of the chamber being matched to the atmospheric pressure.
    Type: Application
    Filed: January 10, 2019
    Publication date: November 14, 2019
    Inventors: Hideaki NAGAI, Tomohiro SAWAHATA, Katsuyuki SAITOH, Shuichi ARAKI, Yoshinori TOBITA, Mitsuhiro IKEDA
  • Patent number: 7909751
    Abstract: A centrifugal separator includes a sample line and a rotating apparatus portion including a rotor that has a rotor chamber. The centrifugal separator centrifugally separates a sample by supplying the sample from the sample line into the rotor and driving to rotate the rotor in the rotor chamber and discharges the centrifugally separated sample from the rotor via the sample line. The centrifugal separator includes a sterilizing apparatus for sterilizing at least a portion with which the sample is brought into contact by making a sterilizing fluid flow through the sample line.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: March 22, 2011
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yoshinori Tobita, Masaharu Aizawa, Katsunori Akatsu, Tomohiro Koizumi
  • Patent number: 7901342
    Abstract: A centrifugal separator includes a sample line and a rotating apparatus portion including a rotor that has a rotor chamber. The centrifugal separator centrifugally separates a sample by supplying the sample from the sample line into the rotor and driving to rotate the rotor in the rotor chamber and discharges the centrifugally separated sample from the rotor via the sample line. The centrifugal separator includes a sterilizing apparatus for sterilizing at least a portion with which the sample is brought into contact by making a sterilizing fluid flow through the sample line.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: March 8, 2011
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yoshinori Tobita, Masaharu Aizawa, Katsunori Akatsu, Tomohiro Koizumi
  • Publication number: 20110028297
    Abstract: A centrifugal separator includes a sample line and a rotating apparatus portion including a rotor that has a rotor chamber. The centrifugal separator centrifugally separates a sample by supplying the sample from the sample line into the rotor and driving to rotate the rotor in the rotor chamber and discharges the centrifugally separated sample from the rotor via the sample line. The centrifugal separator includes a sterilizing apparatus for sterilizing at least a portion with which the sample is brought into contact by making a sterilizing fluid flow through the sample line.
    Type: Application
    Filed: October 8, 2010
    Publication date: February 3, 2011
    Applicant: HITACHI KOKI CO., LTD.
    Inventors: Yoshinori Tobita, Masaharu Aizawa, Katsunori Akatsu, Tomohiro Koizumi
  • Patent number: 7794383
    Abstract: A centrifugal separator includes a rotator part that separates a liquid sample and has a rotor and a drive part. The rotor receives a liquid sample therein and rotates to separate the liquid sample. The drive part drives the rotor to rotate. A controller part controls operations of the rotator part which is mounted in a rotator casing. A controller casing which is separate from the rotator casing mounts the controller part, and the controller part is connected via a drive wire to the drive part in the rotator part. The rotor casing is disposed at a clean room, the controller casing is disposed outside the clean room, and the drive wire passes through a wall of the clean room via an air-tight sealing mechanism.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: September 14, 2010
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Kenichi Tetsu, Masaharu Aizawa, Katsunori Akatsu, Yoshinori Tobita, Yukiyoshi Maehara
  • Publication number: 20090239729
    Abstract: A centrifugal separator includes a sample line and a rotating apparatus portion including a rotor that has a rotor chamber. The centrifugal separator centrifugally separates a sample by supplying the sample from the sample line into the rotor and driving to rotate the rotor in the rotor chamber and discharges the centrifugally separated sample from the rotor via the sample line. The centrifugal separator includes a sterilizing apparatus for sterilizing at least a portion with which the sample is brought into contact by making a sterilizing fluid flow through the sample line.
    Type: Application
    Filed: June 3, 2009
    Publication date: September 24, 2009
    Inventors: Yoshinori TOBITA, Masaharu Aizawa, Katsunori Akatsu, Tomohiro Koizumi
  • Patent number: 7591775
    Abstract: A centrifugal separator includes: a sample line; and a rotating apparatus portion including a rotor that has a rotor chamber. The centrifugal separator centrifugally separates a sample by supplying the sample from the sample line into the rotor and driving to rotate the rotor in the rotor chamber and discharges the centrifugally separated sample from the rotor via the sample line. The centrifugal separator includes: a sterilizing apparatus for sterilizing at least a portion with which the sample is brought into contact by making a sterilizing fluid flow through the sample line.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: September 22, 2009
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yoshinori Tobita, Masaharu Aizawa, Katsunori Akatsu, Tomohiro Koizumi
  • Publication number: 20080251436
    Abstract: A centrifugal separator includes a rotator part that separates a liquid sample and has a rotor and a drive part. The rotor receives a liquid sample therein and rotates to separate the liquid sample. The drive part drives the rotor to rotate. A controller part controls operations of the rotator part which is mounted in a rotator casing. A controller casing which is separate from the rotator casing mounts the controller part, and the controller part is connected via a drive wire to the drive part in the rotator part. The rotor casing is disposed at a clean room, the controller casing is disposed outside the clean room, and the drive wire passes through a wall of the clean room via an air-tight sealing mechanism.
    Type: Application
    Filed: June 18, 2008
    Publication date: October 16, 2008
    Inventors: Kenichi Tetsu, Masaharu Aizawa, Katsunori Akatsu, Yoshinori Tobita, Yukiyoshi Maehara
  • Patent number: 7396324
    Abstract: A centrifugal separator includes a rotator part, a controller part, and a first control panel. The rotator part has a rotor for separating components in a liquid sample, and a drive shaft for driving the rotor to rotate. The controller part controls operations of the rotator part. The first control panel is provided with a first operating part for setting operating conditions of the rotator part including the desired rotating speed of the rotor and the desired operation period of time of the rotor, and a first display unit for displaying the operating conditions and status of the rotator part. A second control panel having the same functions as the first control panel is provided in a location separate from the controller part. Hence, a user can check the operating status of the centrifugal separator and set and modify operating conditions for the centrifugal separator not only by using the first control panel but also by using the second control panel.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: July 8, 2008
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Kenichi Tetsu, Masaharu Aizawa, Katsunori Akatsu, Yoshinori Tobita, Yukiyoshi Maehara
  • Patent number: 7144361
    Abstract: A continuous flow type centrifuge to which a liquid sample is continuous supplied. The centrifuge includes a rotor rotatably supported by a main housing and drivingly rotated by a motor. The rotor includes a cylindrical rotor body, a hollow cylindrical core body, and end plates. The hollow cylindrical core body is disposed in the rotor body providing a space therebetween. The core body has an upper open end, a lower open end and an outer peripheral surface provided with a plurality of partitioning walls positioned at an equal interval in a circumferential direction of the core body for providing a plurality of cavities each defined by the core body, the rotor body and neighboring partitioning walls. The end plates include an upper end plate disposed to cover the upper open end, and a lower end plate disposed to cover the lower open end.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: December 5, 2006
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Masaharu Aizawa, Yoshinori Tobita
  • Publication number: 20060009341
    Abstract: A centrifugal separator includes: a sample line; and a rotating apparatus portion including a rotor that has a rotor chamber. The centrifugal separator centrifugally separates a sample by supplying the sample from the sample line into the rotor and driving to rotate the rotor in the rotor chamber and discharges the centrifugally separated sample from the rotor via the sample line. The centrifugal separator includes: a sterilizing apparatus for sterilizing at least a portion with which the sample is brought into contact by making a sterilizing fluid flow through the sample line.
    Type: Application
    Filed: July 7, 2005
    Publication date: January 12, 2006
    Inventors: Yoshinori Tobita, Masaharu Aizawa, Katsunori Akatsu, Tomohiro Koizumi
  • Publication number: 20050107235
    Abstract: A centrifugal separator includes a rotator part, a controller part, and a first control panel. The rotator part has a rotor for separating components in a liquid sample, and a drive shaft for driving the rotor to rotate. The controller part controls operations of the rotator part. The first control panel is provided with a first operating part for setting operating conditions of the rotator part including the desired rotating speed of the rotor and the desired operation period of time of the rotor, and a first display unit for displaying the operating conditions and status of the rotator part. A second control panel having the same functions as the first control panel is provided in a location separate from the controller part. Hence, a user can check the operating status of the centrifugal separator and set and modify operating conditions for the centrifugal separator not only by using the first control panel but also by using the second control panel.
    Type: Application
    Filed: October 18, 2004
    Publication date: May 19, 2005
    Inventors: Kenichi Tetsu, Masaharu Aizawa, Katsunori Akatsu, Yoshinori Tobita, Yukiyoshi Maehara
  • Publication number: 20040214711
    Abstract: A continuous flow type centrifuge to which a liquid sample is continuous supplied. The centrifuge includes a rotor rotatably supported by a main housing and drivingly rotated by a motor. The rotor includes a cylindrical rotor body, a hollow cylindrical core body, and end plates. The hollow cylindrical core body is disposed in the rotor body providing a space therebetween. The core body has an upper open end, a lower open end and an outer peripheral surface provided with a plurality of partitioning walls positioned at an equal interval in a circumferential direction of the core body for providing a plurality of cavities each defined by the core body, the rotor body and neighboring partitioning walls. The end plates include an upper end plate disposed to cover the upper open end, and a lower end plate disposed to cover the lower open end.
    Type: Application
    Filed: April 28, 2004
    Publication date: October 28, 2004
    Inventors: Masaharu Aizawa, Yoshinori Tobita
  • Patent number: 5731681
    Abstract: A power control apparatus for controlling power supplied to an electric motor rotating a rotor employed in a centrifuge is provided. The power control apparatus includes first and second inverters and a smoothing capacitor disposed between the first and second inverters. In a motor power mode, the first inverter charges the smoothing capacitor with power supplied by an AC power supply, while the second inverter charges, in a motor braking mode, the smoothing capacitor with power regenerated by the motor during a braking operation for returning the regenerated power back to the AC power supply through the first inverter. An reactor is arranged between the AC power supply and the first inverter for reducing harmonic components contained in the current supplied from or back to the AC power supply.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: March 24, 1998
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Masahiro Inaniwa, Nobuharu Kido, Takahiro Fujimaki, Shinji Watanabe, Noriyasu Matsufuji, Yoshinori Tobita
  • Patent number: 5608301
    Abstract: A power control apparatus for controlling power supplied to an electric motor rotating a rotor employed in a centrifuge is provided. The power control apparatus includes first and second inverters and a smoothing capacitor disposed between the first and second inverters. In a motor power mode, the first inverter charges the smoothing capacitor with power supplied by an AC power supply, while the second inverter charges, in a motor braking mode, the smoothing capacitor with power regenerated by the motor during a braking operation for returning the regenerated power back to the AC power supply through the first inverter. An reactor is arranged between the AC power supply and the first inverter for reducing harmonic components contained in the current supplied from or back to the AC power supply.
    Type: Grant
    Filed: June 28, 1995
    Date of Patent: March 4, 1997
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Masahiro Inaniwa, Nobuharu Kido, Takahiro Fujimaki, Shinji Watanabe, Noriyasu Matsufuji, Yoshinori Tobita