Patents by Inventor Naoki Hiraoka
Naoki Hiraoka 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: 11305637Abstract: A vehicle cooling system includes a circulation flow path section which has a first flow path section and a second flow path section, and a solenoid valve which can switch between an open state in which the first flow path section and the second flow path section are connected and a closed state in which the first flow path section and the second flow path section are blocked. The circulation flow path section includes a valve body accommodating section configured to include a first accommodating section and a second accommodating section which connects the first flow path section and the second flow path section in the open state, and a connection flow path section whose one end is connected to the first flow path section. The other end of the connection flow path section opens to the first accommodating section.Type: GrantFiled: March 21, 2019Date of Patent: April 19, 2022Assignees: SUBARU CORPORATION, NIDEC TOSOK CORPORATIONInventors: Naoki Hiraoka, Tomoya Ozawa, Takashi Asai, Daisuke Murata, Keita Kobayashi, Tomohiro Yasuda, Kenro Takahashi
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Publication number: 20190291569Abstract: A vehicle cooling system includes a circulation flow path section which has a first flow path section and a second flow path section, and a solenoid valve which can switch between an open state in which the first flow path section and the second flow path section are connected and a closed state in which the first flow path section and the second flow path section are blocked. The circulation flow path section includes a valve body accommodating section configured to include a first accommodating section and a second accommodating section which connects the first flow path section and the second flow path section in the open state, and a connection flow path section whose one end is connected to the first flow path section. The other end of the connection flow path section opens to the first accommodating section.Type: ApplicationFiled: March 21, 2019Publication date: September 26, 2019Inventors: Naoki HIRAOKA, Tomoya OZAWA, Takashi ASAI, Daisuke MURATA, Keita KOBAYASHI, Tomohiro YASUDA, Kenro TAKAHASHI
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Patent number: 7863195Abstract: An apparatus for feeding slurry to an external device. The apparatus includes a preparation tank for preparing the slurry. A circulation pipe is connected to the preparation tank to circulate the slurry. A feeding pipe is connected between the preparation tank and the external device to feed the external device with the slurry. A pump sends the chemical solution in the preparation tank to the circulation pipe and the feeding pipe. A concentration detector is arranged downstream to the pump to detect the concentration of the slurry. A controller controls the concentration of the chemical solution in the preparation tank in accordance with the detection value of the concentration detector and controls the feeding of the chemical solution.Type: GrantFiled: March 14, 2008Date of Patent: January 4, 2011Assignee: Fujitsu Semiconductor LimitedInventors: Naoki Hiraoka, Hiroshi Osuda, Hotaka Yamamoto
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Patent number: 7705584Abstract: The magnetic sensor in the invention is arranged to detect a change of magnetic field caused by a movement of the magnetic movable by a magnetic sensor element arranged with a gap to the magnetic movable, to convert the detected change of magnetic field by first and second bridge circuits into electric signals, to generate first and second rectangular-wave signals by first and second comparator circuits depending upon the electric signals, and to form a signal having at least four levels by a signal forming circuit, thereby detecting a moving direction of the magnetic movable depending upon a level-change order in the signal. This makes it possible to detect a rotating direction of the magnetic movable rapidly and correctly.Type: GrantFiled: July 12, 2006Date of Patent: April 27, 2010Assignee: Mitsubishi Electric CorporationInventors: Masahiro Yokotani, Naoki Hiraoka
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Patent number: 7557041Abstract: A chemical supplying apparatus includes first and second mixing tanks for mixing and supplying chemical slurries used in a semiconductor fabrication process. The slurries are alternately provided from the first and second mixing tanks such that the slurry is continuously available to a processing apparatus for maximum efficiency. While one of the tanks is supplying the slurry, the other tank is cleaned and then used to prepare a new batch of the slurry.Type: GrantFiled: February 9, 2007Date of Patent: July 7, 2009Assignee: Fujitsu Microelectronics LimitedInventor: Naoki Hiraoka
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Patent number: 7468604Abstract: A magnetic detector, wherein the magnetic/electric conversion element is constituted by at least six segments symmetrically arranged in a direction in which the magnetic moving body rotates maintaining a predetermined pitch with respect to the center line of the magnet, first and second bridge circuits are constituted so as to produce outputs accompanying the rotation of the magnetic moving body, and a third bridge circuit is constituted so as to produce an output accompanying the rotation of the magnetic moving body, and wherein a comparison level of a comparator circuit that shapes the waveform of a differential output signal of the first and second bridge circuits is adjusted relying upon an output signal of the third bridge circuit.Type: GrantFiled: December 27, 2006Date of Patent: December 23, 2008Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masahiro Yokotani, Naoki Hiraoka
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Publication number: 20080214005Abstract: An apparatus for feeding slurry to an external device. The apparatus includes a preparation tank for preparing the slurry. A circulation pipe is connected to the preparation tank to circulate the slurry. A feeding pipe is connected between the preparation tank and the external device to feed the external device with the slurry. A pump sends the chemical solution in the preparation tank to the circulation pipe and the feeding pipe. A concentration detector is arranged downstream to the pump to detect the concentration of the slurry. A controller controls the concentration of the chemical solution in the preparation tank in accordance with the detection value of the concentration detector and controls the feeding of the chemical solution.Type: ApplicationFiled: March 14, 2008Publication date: September 4, 2008Applicant: FUJITSU LIMITEDInventors: Naoki Hiraoka, Hiroshi Osuda, Hotaka Yamamoto
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Patent number: 7419946Abstract: An apparatus for feeding slurry to an external device. The apparatus includes a preparation tank for preparing the slurry. A circulation pipe is connected to the preparation tank to circulate the slurry. A feeding pipe is connected between the preparation tank and the external device to feed the external device with the slurry. A pump sends the chemical solution in the preparation tank to the circulation pipe and the feeding pipe. A concentration detector is arranged downstream to the pump to detect the concentration of the slurry. A controller controls the concentration of the chemical solution in the preparation tank in accordance with the detection value of the concentration detector and controls the feeding of the chemical solution.Type: GrantFiled: September 16, 2003Date of Patent: September 2, 2008Assignee: Fujitsu LimitedInventors: Naoki Hiraoka, Hiroshi Osuda, Hotaka Yamamoto
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Publication number: 20070285086Abstract: A magnetic detector, wherein the magnetic/electric conversion element is constituted by at least six segments symmetrically arranged in a direction in which the magnetic moving body rotates maintaining a predetermined pitch with respect to the center line of the magnet, first and second bridge circuits are constituted so as to produce outputs accompanying the rotation of the magnetic moving body, and a third bridge circuit is constituted so as to produce an output accompanying the rotation of the magnetic moving body, and wherein a comparison level of a comparator circuit that shapes the waveform of a differential output signal of the first and second bridge circuits is adjusted relying upon an output signal of the third bridge circuit.Type: ApplicationFiled: December 27, 2006Publication date: December 13, 2007Applicant: Mitsubishi Electric CorporationInventors: Masahiro Yokotani, Naoki Hiraoka
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Patent number: 7265541Abstract: The magnetic sensor in the invention includes a detecting section that detects a change of magnetic flux due to a movement of the magnetic movable, comparator circuits constituting a converting section that converts a change of magnetic flux detected by the detecting section into an electric amount, and a D-FF circuit device, in a sensor unit having a power-supplying power terminal VB, a ground terminal GND and an output terminal VOUT. A current control section is provided to change the amount of current flowing through at least one of the power terminal and the ground terminal, correspondingly to a moving direction of the magnetic movable. Thus, a moving direction of the magnetic movable can be determined depending upon the amount of current.Type: GrantFiled: August 23, 2006Date of Patent: September 4, 2007Assignee: Mitsubishi Electric CorporationInventors: Masahiro Yokotani, Naoki Hiraoka
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Publication number: 20070200561Abstract: The magnetic sensor in the invention is arranged to detect a change of magnetic field caused by a movement of the magnetic movable by a magnetic sensor element arranged with a gap to the magnetic movable, to convert the detected change of magnetic field by first and second bridge circuits into electric signals, to generate first and second rectangular-wave signals by first and second comparator circuits depending upon the electric signals, and to form a signal having at least four levels by a signal forming circuit, thereby detecting a moving direction of the magnetic movable depending upon a level-change order in the signal. This makes it possible to detect a rotating direction of the magnetic movable rapidly and correctly.Type: ApplicationFiled: July 12, 2006Publication date: August 30, 2007Inventors: Masahiro Yokotani, Naoki Hiraoka
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Publication number: 20070182405Abstract: The magnetic sensor in the invention includes a detecting section that detects a change of magnetic flux due to a movement of the magnetic movable, comparator circuits constituting a converting section that converts a change of magnetic flux detected by the detecting section into an electric amount, and a D-FF circuit device, in a sensor unit having a power-supplying power terminal VB, a ground terminal GND and an output terminal VOUT. A current control section is provided to change the amount of current flowing through at least one of the power terminal and the ground terminal, correspondingly to a moving direction of the magnetic movable. Thus, a moving direction of the magnetic movable can be determined depending upon the amount of current.Type: ApplicationFiled: August 23, 2006Publication date: August 9, 2007Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masahiro YOKOTANI, Naoki HIRAOKA
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Publication number: 20070170913Abstract: A magnetic detection apparatus can reduce the cost of production to a substantially extent. The magnetic detection apparatus includes a magnetic movable element (1) having a first groove (1a) and a second groove (1b) that are different in diametral depth from each other, a magnetoresistive segment (3a) that is arranged apart from the magnetic movable element (1) so as to come in opposition to the first and second grooves (1a, 1b) in accordance with the moving magnetic movable element (1), a magnet (5) that is arranged in the vicinity of the magnetoresistive segment (3a) for applying a magnetic field thereto, and a processing circuit part (4) that generates different output signals in accordance with a change of the magnetic field applied to the magnetoelectric conversion element (3a) which is caused in accordance with the first and second grooves (1a, 1b) in opposition to said processing circuit part (4).Type: ApplicationFiled: May 1, 2006Publication date: July 26, 2007Inventors: Masahiro Yokotani, Naoki Hiraoka
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Publication number: 20070141845Abstract: A chemical supplying apparatus includes first and second mixing tanks for mixing and supplying chemical slurries used in a semiconductor fabrication process. The slurries are alternately provided from the first and second mixing tanks such that the slurry is continuously available to a precessing apparatus for maximum efficiency. While one of the tanks is supplying the slurry, the other tank is cleaned and then used to prepare a new batch of the slurry.Type: ApplicationFiled: February 9, 2007Publication date: June 21, 2007Applicant: FUJITSU LIMITEDInventors: Naoki Hiraoka, Takeshi Hiraide
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Patent number: 7208417Abstract: A chemical supplying apparatus includes first and second mixing tanks for mixing and supplying chemical slurries used in a semiconductor fabrication process. The slurries are alternately provided from the first and second mixing tanks such that the slurry is continuously available to a precessing apparatus for maximum efficiency. While one of the tanks is supplying the slurry, the other tank is cleaned and then used to prepare a new batch of the slurry.Type: GrantFiled: February 23, 2005Date of Patent: April 24, 2007Assignee: Fujitsu LimitedInventor: Naoki Hiraoka
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Patent number: 7157904Abstract: A magnetic detection apparatus is able to make a selection between AC coupling and DC coupling thereby to improve the accuracy of a final output signal corresponding to a magnetic movable element, thus making it possible to ensure excellent detection performance. The magnetic detection apparatus with a sensor composed of magnetoresistive elements (2a, 2b) for detecting the strength of a magnetic field includes a first comparison circuit (31) that has a first comparison level (VR1), and waveform shapes the amplitude of a detection signal (C) from the magnetoresistive elements (2a, 2b) through DC coupling, a second comparison circuit (32) that has a second comparison level (VR2), and waveform shapes the amplitude of the detection signal C through DC coupling, and a third comparison circuit (33) that has a third comparison level VR3, and waveform shapes the amplitude of the detection signal C after AC coupling.Type: GrantFiled: June 6, 2006Date of Patent: January 2, 2007Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masahiro Yokotani, Naoki Hiraoka
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Patent number: 7084620Abstract: A magnetic detection apparatus includes a first block, a second block, and an exterior resin covering the first block and the second block. The first block includes a magnetoresistive element for detecting a change in a magnetic field that varies in accordance with movement of a rotating member, electronic components forming a protection circuit against external noise, a first lead frame electrically connected with the electronic components, and a first base in which the electronic components, the first lead frame and the magnetoresistive element are sealed with a resin. The second block includes a magnet arranged in opposition to an object to be detected for generating a magnetic field, a second lead frame electrically connected with the first lead frame and having a connector terminal for outputting an output signal of the magnetoresistive element to an external member, and a second base in which the second lead frame is sealed with a resin.Type: GrantFiled: April 18, 2003Date of Patent: August 1, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shigeki Tsujii, Takuji Nada, Naoki Hiraoka
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Patent number: 7045997Abstract: A magnetic detection apparatus can accurately detect the rotational position of a magnetic moving member even when intervals between adjacent teeth formed thereon and the circumferential width of each tooth itself are both small and when an opposing distance between the magnetic moving member and first and second magnetoresistive segments is large. A processing circuit is arranged apart from the magnetic moving member on a plane thereof, which is formed on its periphery with the teeth. The processing circuit has a bridge circuit including the first magnetoresistive segment and the second magnetoresistive segment. A magnet applies a magnetic field to the first and second magnetoresistive segments, and to the magnetic moving member in a direction of an axis of rotation thereof.Type: GrantFiled: November 13, 2003Date of Patent: May 16, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masahiro Yokotani, Izuru Shinjo, Naohiro Mishiro, Naoki Hiraoka
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Publication number: 20050142883Abstract: A chemical supplying apparatus includes first and second mixing tanks for mixing and supplying chemical slurries used in a semiconductor fabrication process. The slurries are alternately provided from the first and second mixing tanks such that the slurry is continuously available to a precessing apparatus for maximum efficiency. While one of the tanks is supplying the slurry, the other tank is cleaned and then used to prepare a new batch of the slurry.Type: ApplicationFiled: February 23, 2005Publication date: June 30, 2005Applicant: FUJITSU LIMITEDInventors: Naoki Hiraoka, Takeshi Hiraide
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Patent number: 6874929Abstract: A chemical supplying apparatus including first and second mixing tanks for mixing and supplying chemical slurries used in a semiconductor fabrication process. The slurries are alternately provided from the first and second mixing tanks such that the slurry is continuously available to a processing apparatus for maximum efficiency. While one of the tanks is supplying the slurry, the other tank is cleaned and then used to prepare a new batch of the slurry.Type: GrantFiled: August 12, 2002Date of Patent: April 5, 2005Assignee: Fujitsu LimitedInventor: Naoki Hiraoka