Patents by Inventor Hisashi Harada
Hisashi Harada 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: 20160136461Abstract: In the particle beam therapy system, a beam transport system includes a beam-path changer for changing a beam path so as to transport a charged particle beam to any one of the plurality of particle beam irradiation apparatuses; and a treatment management device includes a beam-path controller that generates an emitter control signal for controlling an emitter of an accelerator and a beam-path changer control signal for controlling the beam-path changer so that, with respect to the plurality of particle beam irradiation apparatuses in which treatment is performed at the same treatment period of time, the charged particle beam is transported to each one of the plurality of particle beam irradiation apparatuses for each time period allocated thereto.Type: ApplicationFiled: November 21, 2013Publication date: May 19, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Takaaki IWATA, Hisashi HARADA, Masahiro IKEDA, Yuehu PU
-
Patent number: 9339866Abstract: The core sand filling method comprises a step of operating an aeration air supply means, so as to float and fluidize core sand within a sand blow chamber and, when a pressure Pf of the sand blow chamber measured by the first pressure sensor reaches a first pressure, operating a compressed air supply means and a step of stopping the aeration air supply means and compressed air supply means from operating when each of the pressure Pf within the sand blow chamber and a pressure Pc within a sand storage chamber is a second pressure or higher while a differential pressure ?P=Pc?Pf is a third pressure or lower.Type: GrantFiled: February 7, 2013Date of Patent: May 17, 2016Assignee: SINTOKOGIO, LTD.Inventors: Shigeyoshi Kato, Hisashi Harada
-
Patent number: 9312100Abstract: In a particle beam therapy system which scans a particle beam and irradiates the particle beam to an irradiation position of an irradiation subject and has a dose monitoring device for measuring a dose of the particle beam and an ionization chamber smaller than the dose monitoring device, the ionization chamber measuring a dose of a particle beam passing through the dose monitoring device, the dose of the particle beam irradiated by the dose monitoring device is measured; the dose of the particle beam passing through the dose monitoring device is measured by the small ionization chamber; and a correction coefficient of the dose measured by the dose monitoring device corresponding to the irradiation position is found based on the dose of the particle beam measured by the small ionization chamber.Type: GrantFiled: September 5, 2014Date of Patent: April 12, 2016Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Toshihiro Otani, Hisashi Harada, Masahiro Ikeda, Kazushi Hanakawa, Taizo Honda
-
Publication number: 20160008631Abstract: An irradiation apparatus radiates a particle beam after forming the beam for plural layers. A dose monitor measures a dose in real time. A dose evaluation unit evaluates an irradiation dose for each layer on the basis of a value measured by the dose monitor and a dose calibration factor set for each layer. An irradiation control section performs radiation control for each layer on the basis of an evaluation result of the dose evaluation unit. An interpolation value generation unit uses actual-measurement dose-calibration factors obtained by radiating a particle beam to a simulated phantom provided with a calibration dosimeter, to generate an interpolation estimation value of the dose calibration factor. For each layer subject to the interpolation value, and based on an irradiation condition of that layer, the interpolation value generation unit performs weighting on each of the actual-measurement dose-calibration factors.Type: ApplicationFiled: June 6, 2013Publication date: January 14, 2016Applicant: Mitsubishi Electric CorporationInventors: Hisashi HARADA, Masahiro IKEDA, Osamu TAKAHASHI, Nobuhiko INA, Yuehu PU, Takaaki IWATA
-
Publication number: 20150328483Abstract: A particle therapy apparatus has a rotating gantry configured in such a way that an irradiation device is rotated around a rotation axis and a particle beam is irradiated onto an irradiation subject; the rotating gantry is provided with an entrance-side deflection electromagnet having a deflection path for radially deflecting the particle beam supplied along the rotation axis so as to guide the particle beam to the irradiation device and a straight path that is switchable with the deflection path and is for making the supplied particle beam travel in a straight manner; there are provided trajectory correcting devices having two position sensors that are arranged along the rotation axis so as to flank the entrance-side deflection electromagnet.Type: ApplicationFiled: February 22, 2013Publication date: November 19, 2015Applicant: Mitsubishi Electric CorporationInventors: Shuhei ODAWARA, Hisashi HARADA, Masahiro IKEDA, Kengo SUGAHARA
-
Patent number: 9101763Abstract: A particle beam irradiation apparatus according to the present invention is provided with a vacuum duct that forms a vacuum region through which the charged particle beam passes, a vacuum window through which the charged particle beam is launched from the vacuum region, a scanning electromagnet that scans the charged particle beam; a monitoring apparatus including a position monitor that detects the passing position of a charged particle beam and the beam size thereof, a low-scattering gas filling chamber including the monitoring apparatus, and an irradiation management apparatus that controls irradiation of the charged particle beam; the particle beam irradiation apparatus is characterized in that the low-scattering gas filling chamber is changeably disposed in such a manner that the beam-axis-direction positional relationship between the monitoring apparatus and the vacuum window is a desired one and in that the low-scattering gas filling chamber is filled with a low-scattering gas.Type: GrantFiled: November 3, 2011Date of Patent: August 11, 2015Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Masahiro Ikeda, Hisashi Harada, Kazushi Hanakawa, Toshihiro Otani, Tadashi Katayose, Taizo Honda, Yukiko Yamada, Yuehu Pu
-
Patent number: 9067065Abstract: The particle beam irradiation apparatus comprises: a position monitor that detects a passing position of a charged particle beam; and an irradiation control apparatus that calculates a distance from a predetermined reference point to the position monitor, calculates a beam irradiation position on an irradiation subject, and controls irradiation of the beam; wherein the irradiation control apparatus includes a position calculation apparatus that calculates the beam irradiation position, based on a beam position detected by the position monitor, a scanning starting point distance information on a distance from a irradiation plane of the irradiation subject to a scanning starting point, of the beam, in a scanning electromagnet, and a position monitor distance information on a distance, from the irradiation plane to the position monitor, that is calculated based on the calculated distance.Type: GrantFiled: March 7, 2011Date of Patent: June 30, 2015Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yukiko Yamada, Hisashi Harada, Takaaki Iwata, Toshihiro Otani, Masahiro Ikeda, Kazushi Hanakawa, Taizo Honda
-
Patent number: 9067066Abstract: A control unit is provided with, a retaining section that retains a plurality of operation patterns each being a pattern of operation to be periodically repeated by an accelerator, the operation patterns having respective operation conditions adjusted for different emission times of an particle beam, to cause a deflection electromagnet in the accelerator to have an intended magnetic field intensity even under a presence of a hysteresis; a reading section for a plurality of slices of an irradiation target in a depth direction, which reads an irradiation condition for each of the slices; a selection section that selects the operation pattern suitable for each of the slices, on the basis of the read irradiation condition; and a main control section that controls, for each of the slices, the accelerator on the basis of the selected operation pattern and an irradiation device on the basis of the irradiation condition.Type: GrantFiled: March 27, 2012Date of Patent: June 30, 2015Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yukiko Yamada, Hisashi Harada, Taizo Honda, Masahiro Ikeda, Kazushi Hanakawa, Toshihiro Otani, Tadashi Katayose
-
Publication number: 20150144289Abstract: The core sand filling method comprises a step of operating an aeration air supply means, so as to float and fluidize core sand within a sand blow chamber and, when a pressure Pf of the sand blow chamber measured by the first pressure sensor reaches a first pressure, operating a compressed air supply means and a step of stopping the aeration air supply means and compressed air supply means from operating when each of the pressure Pf within the sand blow chamber and a pressure Pc within a sand storage chamber is a second pressure or higher while a differential pressure ?P=Pc?Pf is a third pressure or lower.Type: ApplicationFiled: February 7, 2013Publication date: May 28, 2015Inventors: Shigeyoshi Kato, Hisashi Harada
-
Publication number: 20150144283Abstract: A core molding machine which can be made smaller while having a favorable core sand filling property is provided. The machine comprises a core box having a pair of laterally separable dies and a sand filling device, having a blow head disposed under the core box, for filling the core box with core sand directed upward from the blow head; the blow head having a sand blow chamber for guiding the core sand to the core box while being connected to the core box and a sand storage chamber communicating with the sand blow chamber; the sand filling device having a compressed air supply unit for supplying a compressed air for blowing the core sand into the core box and an aeration air supply unit for supplying an aeration air for floating and fluidizing the core sand within the sand blow chamber.Type: ApplicationFiled: February 7, 2013Publication date: May 28, 2015Inventors: Shigeyoshi Kato, Etsuya Ohashi, Hisashi Harada
-
Publication number: 20150114259Abstract: Provided is a mixing and adjusting method for foundry sand that uses a sand muller, having weight measuring means for measuring a weight of the foundry sand to be mixed, water content measuring means for measuring a water content of the foundry sand to be mixed, water pouring means for pouring water into the foundry sand, and CB value measuring means for measuring a CB value of the foundry sand during mixing.Type: ApplicationFiled: June 4, 2013Publication date: April 30, 2015Applicant: SINTOKOGIO, LTD.Inventors: Yuichi Ogura, Koji Takishita, Hisashi Harada
-
Patent number: 8997835Abstract: The core sand filling device includes the core box, a blow head which is placed below the core box so as to move up and down in a relative manner to the core box and divided into a sand blowing chamber and a sand storage chamber that are communicatively connected to each other, a compressed air supply unit which is communicatively connected to the sand storage chamber and supplies compressed air into the sand storage chamber, an aeration air supply unit which is communicatively connected to the sand blowing chamber and supplies into the sand blowing chamber aeration air for suspending and fluidizing core sand inside the sand blowing chamber, and an exhaust valve which is communicatively connected to the sand blowing chamber and exhausts compressed air remaining in the sand blowing chamber.Type: GrantFiled: May 18, 2012Date of Patent: April 7, 2015Assignee: Sintokogio, Ltd.Inventors: Shigeyoshi Kato, Shuichi Tsuzuki, Hisashi Harada
-
Patent number: 8933420Abstract: A particle beam therapy system comprising a treatment table, a treatment table control unit and an irradiation control unit configured to output an instruction for controlling the treatment table control unit, an accelerator and a scanning electromagnet, wherein after the treatment table control unit controls the treatment table so as for a patient isocenter which is reference position of an affected area of a patient to move to a position of an irradiation isocenter which is set at a position which is closer to an irradiation nozzle than an equipment isocenter which is reference of positional relation of the irradiation nozzle and the treatment table, the irradiation control unit outputs an instruction for irradiating the patient with a particle beam.Type: GrantFiled: November 2, 2011Date of Patent: January 13, 2015Assignee: Mitsubishi Electric CorporationInventors: Masahiro Ikeda, Hisashi Harada, Kazushi Hanakawa, Toshihiro Otani, Tadashi Katayose, Taizo Honda, Yukiko Yamada, Yuehu Pu
-
Publication number: 20140374624Abstract: In a particle beam therapy system which scans a particle beam and irradiates the particle beam to an irradiation position of an irradiation subject and has a dose monitoring device for measuring a dose of the particle beam and an ionization chamber smaller than the dose monitoring device, the ionization chamber measuring a dose of a particle beam passing through the dose monitoring device, the dose of the particle beam irradiated by the dose monitoring device is measured; the dose of the particle beam passing through the dose monitoring device is measured by the small ionization chamber; and a correction coefficient of the dose measured by the dose monitoring device corresponding to the irradiation position is found based on the dose of the particle beam measured by the small ionization chamber.Type: ApplicationFiled: September 5, 2014Publication date: December 25, 2014Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Toshihiro OTANI, Hisashi HARADA, Masahiro IKEDA, Kazushi HANAKAWA, Taizo HONDA
-
Publication number: 20140323793Abstract: A control unit is provided with, a retaining section that retains a plurality of operation patterns each being a pattern of operation to be periodically repeated by an accelerator, the operation patterns having respective operation conditions adjusted for different emission times of an particle beam, to cause a deflection electromagnet in the accelerator to have an intended magnetic field intensity even under a presence of a hysteresis; a reading section for a plurality of slices of an irradiation target in a depth direction, which reads an irradiation condition for each of the slices; a selection section that selects the operation pattern suitable for each of the slices, on the basis of the read irradiation condition; and a main control section that controls, for each of the slices, the accelerator on the basis of the selected operation pattern and an irradiation device on the basis of the irradiation condition.Type: ApplicationFiled: March 27, 2012Publication date: October 30, 2014Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yukiko Yamada, Hisashi Harada, Taizo Honda, Masahiro Ikeda, Kazushi Hanakawa, Toshihiro Otani, Tadashi Katayose
-
Patent number: 8854048Abstract: In a particle beam therapy system which scans a particle beam and irradiates the particle beam to an irradiation position of an irradiation subject and has a dose monitoring device for measuring a dose of the particle beam and an ionization chamber smaller than the dose monitoring device, the ionization chamber measuring a dose of a particle beam passing through the dose monitoring device, the dose of the particle beam irradiated by the dose monitoring device is measured; the dose of the particle beam passing through the dose monitoring device is measured by the small ionization chamber; and a correction coefficient of the dose measured by the dose monitoring device corresponding to the irradiation position is found based on the dose of the particle beam measured by the small ionization chamber.Type: GrantFiled: March 10, 2011Date of Patent: October 7, 2014Assignee: Mitsubishi Electric CorporationInventors: Toshihiro Otani, Hisashi Harada, Masahiro Ikeda, Kazushi Hanakawa, Taizo Honda
-
Publication number: 20140235922Abstract: A particle beam treatment system includes an accelerator system that accelerates a charged particle beam and a beam transport system that transports a high-energy beam emitted from the accelerator to an irradiation location, wherein the beam transport system is provided with at least one steering electromagnet and at least one beam position monitor corresponding to the at least one steering electromagnet, and wherein the at least one beam position monitor supplies an excitation current for correcting a beam position, which periodically varies, to the at least one steering electromagnet.Type: ApplicationFiled: September 21, 2012Publication date: August 21, 2014Applicant: Mitsubishi Electric CorporationInventors: Kazushi Hanakawa, Kengo Sugahara, Shuhei Odawara, Hisashi Harada, Masahiro Ikeda, Toshihiro Otani, Taizo Honda, Katsuhisa Yoshida
-
Publication number: 20140228615Abstract: A particle beam irradiation apparatus according to the present invention is provided with a vacuum duct that forms a vacuum region through which the charged particle beam passes, a vacuum window through which the charged particle beam is launched from the vacuum region, a scanning electromagnet that scans the charged particle beam; a monitoring apparatus including a position monitor that detects the passing position of a charged particle beam and the beam size thereof, a low-scattering gas filling chamber including the monitoring apparatus, and an irradiation management apparatus that controls irradiation of the charged particle beam; the particle beam irradiation apparatus is characterized in that the low-scattering gas filling chamber is changeably disposed in such a manner that the beam-axis-direction positional relationship between the monitoring apparatus and the vacuum window is a desired one and in that the low-scattering gas filling chamber is filled with a low-scattering gas.Type: ApplicationFiled: November 3, 2011Publication date: August 14, 2014Applicant: Mitsubishi Electric CorporationInventors: Masahiro Ikeda, Hisashi Harada, Kazushi Hanakawa, Toshihiro Otani, Tadashi Katayose, Taizo Honda, Yukiko Yamada, Yuehu Pu
-
Publication number: 20140187847Abstract: A particle beam therapy system comprising a treatment table, a treatment table control unit and an irradiation control unit configured to output an instruction for controlling the treatment table control unit, an accelerator and a scanning electromagnet, wherein after the treatment table control unit controls the treatment table so as for a patient isocenter which is reference position of an affected area of a patient to move to a position of an irradiation isocenter which is set at a position which is closer to an irradiation nozzle than an equipment isocenter which is reference of positional relation of the irradiation nozzle and the treatment table, the irradiation control unit outputs an instruction for irradiating the patient with a particle beam.Type: ApplicationFiled: November 2, 2011Publication date: July 3, 2014Applicant: Mitsubishi Electric CorporationInventors: Masahiro Ikeda, Hisashi Harada, Kazushi Hanakawa, Toshihiro Otani, Tadashi Katayose, Taizo Honda, Yukiko Yamada, Yuehu Pu
-
Publication number: 20140116636Abstract: The core sand filling device includes the core box, a blow head which is placed below the core box so as to move up and down in a relative manner to the core box and divided into a sand blowing chamber and a sand storage chamber that are communicatively connected to each other, a compressed air supply unit which is communicatively connected to the sand storage chamber and supplies compressed air into the sand storage chamber, an aeration air supply unit which is communicatively connected to the sand blowing chamber and supplies into the sand blowing chamber aeration air for suspending and fluidizing core sand inside the sand blowing chamber, and an exhaust valve which is communicatively connected to the sand blowing chamber and exhausts compressed air remaining in the sand blowing chamber.Type: ApplicationFiled: May 18, 2012Publication date: May 1, 2014Applicant: SINTOKOGIO, LTD.Inventors: Shigeyoshi Kato, Shuichi Tsuzuki, Hisashi Harada