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).
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Patent number: 10746307Abstract: 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: GrantFiled: January 10, 2019Date of Patent: August 18, 2020Assignee: V-Tex CorporationInventors: Hideaki Nagai, Tomohiro Sawahata, Katsuyuki Saitoh, Shuichi Araki, Yoshinori Tobita, Mitsuhiro Ikeda
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Publication number: 20190346047Abstract: 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: ApplicationFiled: January 10, 2019Publication date: November 14, 2019Inventors: Hideaki NAGAI, Tomohiro SAWAHATA, Katsuyuki SAITOH, Shuichi ARAKI, Yoshinori TOBITA, Mitsuhiro IKEDA
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Patent number: 7909751Abstract: 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: GrantFiled: October 8, 2010Date of Patent: March 22, 2011Assignee: Hitachi Koki Co., Ltd.Inventors: Yoshinori Tobita, Masaharu Aizawa, Katsunori Akatsu, Tomohiro Koizumi
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Patent number: 7901342Abstract: 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: GrantFiled: June 3, 2009Date of Patent: March 8, 2011Assignee: Hitachi Koki Co., Ltd.Inventors: Yoshinori Tobita, Masaharu Aizawa, Katsunori Akatsu, Tomohiro Koizumi
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Publication number: 20110028297Abstract: 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: ApplicationFiled: October 8, 2010Publication date: February 3, 2011Applicant: HITACHI KOKI CO., LTD.Inventors: Yoshinori Tobita, Masaharu Aizawa, Katsunori Akatsu, Tomohiro Koizumi
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Patent number: 7794383Abstract: 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: GrantFiled: June 18, 2008Date of Patent: September 14, 2010Assignee: Hitachi Koki Co., Ltd.Inventors: Kenichi Tetsu, Masaharu Aizawa, Katsunori Akatsu, Yoshinori Tobita, Yukiyoshi Maehara
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Publication number: 20090239729Abstract: 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: ApplicationFiled: June 3, 2009Publication date: September 24, 2009Inventors: Yoshinori TOBITA, Masaharu Aizawa, Katsunori Akatsu, Tomohiro Koizumi
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Patent number: 7591775Abstract: 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: GrantFiled: July 7, 2005Date of Patent: September 22, 2009Assignee: Hitachi Koki Co., Ltd.Inventors: Yoshinori Tobita, Masaharu Aizawa, Katsunori Akatsu, Tomohiro Koizumi
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Publication number: 20080251436Abstract: 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: ApplicationFiled: June 18, 2008Publication date: October 16, 2008Inventors: Kenichi Tetsu, Masaharu Aizawa, Katsunori Akatsu, Yoshinori Tobita, Yukiyoshi Maehara
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Patent number: 7396324Abstract: 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: GrantFiled: October 18, 2004Date of Patent: July 8, 2008Assignee: Hitachi Koki Co., Ltd.Inventors: Kenichi Tetsu, Masaharu Aizawa, Katsunori Akatsu, Yoshinori Tobita, Yukiyoshi Maehara
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Patent number: 7144361Abstract: 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: GrantFiled: April 28, 2004Date of Patent: December 5, 2006Assignee: Hitachi Koki Co., Ltd.Inventors: Masaharu Aizawa, Yoshinori Tobita
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Publication number: 20060009341Abstract: 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: ApplicationFiled: July 7, 2005Publication date: January 12, 2006Inventors: Yoshinori Tobita, Masaharu Aizawa, Katsunori Akatsu, Tomohiro Koizumi
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Publication number: 20050107235Abstract: 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: ApplicationFiled: October 18, 2004Publication date: May 19, 2005Inventors: Kenichi Tetsu, Masaharu Aizawa, Katsunori Akatsu, Yoshinori Tobita, Yukiyoshi Maehara
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Publication number: 20040214711Abstract: 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: ApplicationFiled: April 28, 2004Publication date: October 28, 2004Inventors: Masaharu Aizawa, Yoshinori Tobita
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Patent number: 5731681Abstract: 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: GrantFiled: February 12, 1997Date of Patent: March 24, 1998Assignee: Hitachi Koki Co., Ltd.Inventors: Masahiro Inaniwa, Nobuharu Kido, Takahiro Fujimaki, Shinji Watanabe, Noriyasu Matsufuji, Yoshinori Tobita
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Patent number: 5608301Abstract: 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: GrantFiled: June 28, 1995Date of Patent: March 4, 1997Assignee: Hitachi Koki Co., Ltd.Inventors: Masahiro Inaniwa, Nobuharu Kido, Takahiro Fujimaki, Shinji Watanabe, Noriyasu Matsufuji, Yoshinori Tobita