Patents by Inventor Taku Oyama
Taku Oyama 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: 11139748Abstract: A power module includes a double-sided electrode module, a power semiconductor element, a pair of base plates, and a connecting member. The double-sided electrode module has a plurality of electrode wiring boards and a power semiconductor element which are molded with a resin material. The pair of base plates has the double-sided electrode module sandwiched therebetween. The pair of base plates are connected via the connecting member. The connecting member is formed in a curved shape.Type: GrantFiled: June 5, 2019Date of Patent: October 5, 2021Assignee: Hitachi Astemo, Ltd.Inventors: Kinya Nakatsu, Hiroshi Hozoji, Takeshi Tokuyama, Yusuke Takagi, Toshiya Satoh, Taku Oyama, Takanori Ninomiya
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Patent number: 10925184Abstract: A data center includes a floor; a side wall configured to partition a space above the floor into a room; a plurality of heat generating device columns arranged in a row direction on the floor, each of the plurality of heat generating device columns including a plurality of heat generating devices that are arranged to form a column in a column direction; an air blower including a plurality of air outlets disposed along a side with respect to the row direction, facing the plurality of heat generating device columns, the air blower being configured to blow air in the column direction from, the plurality of air outlets; and an inclined ceiling that increases in height from a first side toward a second side in the row direction.Type: GrantFiled: November 5, 2018Date of Patent: February 16, 2021Assignees: NTT Ltd Japan Corporation, RagingWire Data Centers, Inc.Inventors: Tomoki Morita, Kuang Min Tan, Naoki Yoshida, Taku Oyama, Robert Patrick Wichert
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Patent number: 10900228Abstract: A data center includes a floor; a side wall configured to partition a space above the floor into a room; a plurality of server columns arranged in a row direction on the floor, each of the plurality of server columns including a plurality of servers that are arranged to form a column in a column direction; an inclined ceiling that increases in height from a first side toward a second side in the column direction; and a first cable tray configured to hold a first cable, the first cable tray being provided in a space below the inclined ceiling on the first side in the column direction, and extending along the row direction.Type: GrantFiled: November 6, 2018Date of Patent: January 26, 2021Assignees: NTT Ltd Japan Corporation, RagingWire Data Centers, Inc.Inventors: Tomoki Morita, Kuang Min Tan, Naoki Yoshida, Taku Oyama, Jerry Gilreath, James Carlisle
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Publication number: 20200141117Abstract: A data center includes a floor; a side wall configured to partition a space above the floor into a room; a plurality of server columns arranged in a row direction on the floor, each of the plurality of server columns including a plurality of servers that are arranged to form a column in a column direction; an inclined ceiling that increases in height from a first side toward a second side in the column direction; and a first cable tray configured to hold a first cable, the first cable tray being provided in a space below the inclined ceiling on the first side in the column direction, and extending along the row direction.Type: ApplicationFiled: November 6, 2018Publication date: May 7, 2020Applicant: NTT Worldwide Telecommunications CorporationInventors: Tomoki MORITA, Kuang Min Tan, Naoki Yoshida, Taku Oyama, Jerry Gilreath, James Carlisle
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Publication number: 20200146187Abstract: A data center includes a floor; a side wall configured to partition a space above the floor into a room; a plurality of heat generating device columns arranged in a row direction on the floor, each of the plurality of heat generating device columns including a plurality of heat generating devices that are arranged to form a column in a column direction; an air blower including a plurality of air outlets disposed along a side with respect to the row direction, facing the plurality of heat generating device columns, the air blower being configured to blow air in the column direction from, the plurality of air outlets; and an inclined ceiling that increases in height from a first side toward a second side in the row direction.Type: ApplicationFiled: November 5, 2018Publication date: May 7, 2020Applicant: NTT Worldwide Telecommunications CorporationInventors: Tomoki MORITA, Kuang Min TAN, Naoki YOSHIDA, Taku OYAMA, Robert Patrick WICHERT
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Publication number: 20190393799Abstract: A power module includes a double-sided electrode module, a power semiconductor element, a pair of base plates, and a connecting member. The double-sided electrode module has a plurality of electrode wiring boards and a power semiconductor element which are molded with a resin material. The pair of base plates has the double-sided electrode module sandwiched therebetween. The pair of base plates are connected via the connecting member.Type: ApplicationFiled: June 5, 2019Publication date: December 26, 2019Inventors: Kinya NAKATSU, Hiroshi HOZOJI, Takeshi TOKUYAMA, Yusuke TAKAGI, Toshiya SATOH, Taku OYAMA, Takanori NINOMIYA
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Patent number: 10348214Abstract: A power converter device includes a double-sided electrode module in which an electrical wiring board and a power semiconductor element are molded with a resin material. The power converter device also includes a heat dissipating base disposed on both sides of the double-sided electrode module and directly contacting cooling medium. The power converter device also includes a module fixture which presses the heat dissipating base in a state of contact with the heat dissipating base. The module fixture is configured to support a circuit board.Type: GrantFiled: June 28, 2017Date of Patent: July 9, 2019Assignee: Hitachi Automotive Systems, Ltd.Inventors: Kinya Nakatsu, Hiroshi Hozoji, Takeshi Tokuyama, Yusuke Takagi, Toshiya Satoh, Taku Oyama, Takanori Ninomiya
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Patent number: 9812250Abstract: While the whole weight of magnetic shields provided in a tank of a transformer is reduced, eddy current loss by magnetic flux leaked from a winding is reduced. A transformer is configured using an iron core having an iron core leg and an iron core yoke, windings wound around the iron core leg, a tank having the iron core and the windings therein, and a first magnetic shield and second magnetic shields formed by laminating silicon steel sheets inside the tank. The first magnetic shield is arranged opposite to the windings, the second magnetic shields are arranged between the first magnetic shield and the tank, and the first magnetic shield and the second magnetic shields are fixed to the tank by different support members.Type: GrantFiled: June 15, 2015Date of Patent: November 7, 2017Assignee: Hitachi, Ltd.Inventors: Yasunori Ono, Takahide Matsuo, Naoya Miyamoto, Taku Oyama, Kentaro Koseki, Ryoji Hirobe
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Publication number: 20170302191Abstract: A power converter device includes a double-sided electrode module in which an electrical wiring board and a power semiconductor element are molded with a resin material. The power converter device also includes a heat dissipating base disposed on both sides of the double-sided electrode module and directly contacting cooling medium. The power converter device also includes a module fixture which presses the heat dissipating base in a state of contact with the heat dissipating base. The module fixture is configured to support a circuit board.Type: ApplicationFiled: June 28, 2017Publication date: October 19, 2017Inventors: Kinya NAKATSU, Hiroshi HOZOJI, Takeshi TOKUYAMA, Yusuke TAKAGI, Toshiya SATOH, Taku OYAMA, Takanori NINOMIYA
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Patent number: 9729076Abstract: A power converter device includes a double-sided electrode module that converts direct current power to alternating current power, a heat dissipating base, a capacitor module, a positive electrode conductor plate, and a negative electrode conductor plate. In the heat dissipating base, heat dissipation surfaces, facing one another, of the double-sided electrode module facing to one another are held with insulation layers being present between the heat dissipating base, and the heat dissipation surfaces. The capacitor module constitutes a smoothing circuit for inhibiting fluctuation in DC voltage. The positive electrode conductor plate and the negative electrode conductor plate transmit electric power between the capacitor module and the double-sided electrode module.Type: GrantFiled: June 28, 2016Date of Patent: August 8, 2017Assignee: Hitachi Automotive Systems, Ltd.Inventors: Kinya Nakatsu, Hiroshi Hozoji, Takeshi Tokuyama, Yusuke Takagi, Toshiya Satoh, Taku Oyama, Takanori Ninomiya
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Patent number: 9711274Abstract: The invention provides a stationary induction apparatus excellent in core vibration damping, being capable of realizing reduction in core excitation-noise. The stationary induction apparatus according to the invention includes a core made up of plural of core-legs formed by lamination of electromagnetic steel sheets, and a core-yoke formed by lamination of electromagnetic steel sheets to join the plural core-legs together; a core-tightening clasp for tightening a joint between the core-yoke and the core-legs, in the direction of the lamination of the electromagnetic steel sheets, to be secured, a winding, a tank, and an insulating sheet disposed between the core-tightening clasp and the core-yoke. Further, a concave hollowed-out part or a notched part is provided on the insulating sheet, positioned at a joint between the core-yoke and the core-leg, and a vibration insulator is disposed in the concave hollowed-out part or the notched part.Type: GrantFiled: June 18, 2015Date of Patent: July 18, 2017Assignee: Hitachi, Ltd.Inventors: Taku Oyama, Takahide Matsuo, Kenichi Kawamura, Akira Yamagishi
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Publication number: 20160308456Abstract: A power converter device includes a double-sided electrode module that converts direct current power to alternating current power, a heat dissipating base, a capacitor module, a positive electrode conductor plate, and a negative electrode conductor plate. In the heat dissipating base, heat dissipation surfaces, facing one another, of the double-sided electrode module facing to one another are held with insulation layers being present between the heat dissipating base, and the heat dissipation surfaces. The capacitor module constitutes a smoothing circuit for inhibiting fluctuation in DC voltage. The positive electrode conductor plate and the negative electrode conductor plate transmit electric power between the capacitor module and the double-sided electrode module.Type: ApplicationFiled: June 28, 2016Publication date: October 20, 2016Inventors: Kinya NAKATSU, Hiroshi HOZOJI, Takeshi TOKUYAMA, Yusuke TAKAGI, Toshiya SATOH, Taku OYAMA, Takanori NINOMIYA
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Patent number: 9407163Abstract: A power converter device includes a double-sided electrode module that converts direct current power to alternating current power, a heat dissipating base, a capacitor module, a positive electrode conductor plate, and a negative electrode conductor plate. In the heat dissipating base, heat dissipation surfaces, facing one another, of the double-sided electrode module facing to one another are held with insulation layers being present between the heat dissipating base and the heat dissipation surfaces. The capacitor module constitutes a smoothing circuit for inhibiting fluctuation in DC voltage. The positive electrode conductor plate and the negative electrode conductor plate transmit electric power between the capacitor module and the double-sided electrode module.Type: GrantFiled: December 17, 2014Date of Patent: August 2, 2016Assignee: Hitachi Automotive Systems, Ltd.Inventors: Kinya Nakatsu, Hiroshi Hozoji, Takeshi Tokuyama, Yusuke Takagi, Toshiya Satoh, Taku Oyama, Takanori Ninomiya
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Publication number: 20160149512Abstract: A power converter device includes a double-sided electrode module that converts direct current power to alternating current power, a heat dissipating base, a capacitor module, a positive electrode conductor plate, and a negative electrode conductor plate. In the heat dissipating base, heat dissipation surfaces, facing one another, of the double-sided electrode module facing to one another are held with insulation layers being present between the heat dissipating base and the heat dissipation surfaces. The capacitor module constitutes a smoothing circuit for inhibiting fluctuation in DC voltage. The positive electrode conductor plate and the negative electrode conductor plate transmit electric power between the capacitor module and the double-sided electrode module.Type: ApplicationFiled: December 17, 2014Publication date: May 26, 2016Inventors: Kinya NAKATSU, Hiroshi HOZOJI, Takeshi TOKUYAMA, Yusuke TAKAGI, Toshiya SATOH, Taku OYAMA, Takanori NINOMIYA
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Publication number: 20160133382Abstract: Provided is a stationary induction apparatus capable of sufficiently decreasing noise and preventing rainwater and dust from entering between welded portions even when using a method of mounting a sound insulating board between an upper stay and a lower stay. The stationary induction apparatus of the present invention includes a stationary induction apparatus main body, a tank, an upper stay and a lower stay, and a sound insulating board. The tank houses the stationary induction apparatus main body and an insulating material. Each of the upper stay and the lower stay is provided respectively, at least at each of an upper portion and a lower portion of an outer surface of the tank. The sound insulating board is disposed between the upper stay and the lower stay. The sound insulating board is partially weld-joined, at each of both ends, with a supporting member, and a sealing material is provided at an outer periphery of a welded portion of the sound insulating board.Type: ApplicationFiled: October 30, 2015Publication date: May 12, 2016Inventors: Sho SUGIYAMA, Akira YAMAGISHI, Ryoji HIROBE, Taku OYAMA
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Publication number: 20160133381Abstract: The stationary induction apparatus includes: a static induction device main body; a tank accommodating the static induction device main body along with an insulating material; an upper stay for reinforcement and a lower stay for reinforcement provided on at least upper part and lower part of an outer surface of the tank; and a sound insulating board provided between the upper stay and the lower stay. The sound insulating board is connected to the upper stay at its one end via a first support member, and to the lower stay at another end via a second support member. The first support member is entirely joined to the upper stay, and the second support member is entirely joined to the lower stay. The sound insulating board is partially joined respectively to the first support member and to the second support member.Type: ApplicationFiled: October 23, 2015Publication date: May 12, 2016Inventors: Takuya OJIMA, Akira YAMAGISHI, Ryoji HIROBE, Taku OYAMA
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Publication number: 20160086726Abstract: While the whole weight of magnetic shields provided in a tank of a transformer is reduced, eddy current loss by magnetic flux leaked from a winding is reduced. A transformer is configured using an iron core having an iron core leg and an iron core yoke, windings wound around the iron core leg, a tank having the iron core and the windings therein, and a first magnetic shield and second magnetic shields formed by laminating silicon steel sheets inside the tank. The first magnetic shield is arranged opposite to the windings, the second magnetic shields are arranged between the first magnetic shield and the tank, and the first magnetic shield and the second magnetic shields are fixed to the tank by different support members.Type: ApplicationFiled: June 15, 2015Publication date: March 24, 2016Inventors: Yasunori ONO, Takahide MATSUO, Naoya MIYAMOTO, Taku OYAMA, Kentaro KOSEKI, Ryoji HIROBE
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Publication number: 20150371767Abstract: The invention provides a stationary induction apparatus excellent in core vibration damping, being capable of realizing reduction in core excitation-noise. The stationary induction apparatus according to the invention includes a core made up of plural of core-legs formed by lamination of electromagnetic steel sheets, and a core-yoke formed by lamination of electromagnetic steel sheets to join the plural core-legs together; a core-tightening clasp for tightening a joint between the core-yoke and the core-legs, in the direction of the lamination of the electromagnetic steel sheets, to be secured, a winding, a tank, and an insulating sheet disposed between the core-tightening clasp and the core-yoke. Further, a concave hollowed-out part or a notched part is provided on the insulating sheet, positioned at a joint between the core-yoke and the core-leg, and a vibration insulator is disposed in the concave hollowed-out part or the notched part.Type: ApplicationFiled: June 18, 2015Publication date: December 24, 2015Inventors: Taku OYAMA, Takahide MATSUO, Kenichi KAWAMURA, Akira YAMAGISHI
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Patent number: 8946567Abstract: A power module and a power converter device including the power module include: two base plates with their main surfaces facing each other; a semiconductor circuit unit disposed between the two base plates; a connecting member that is connected to the two base plates and forms a housing region in which the semiconductor circuit unit is housed; and an insulating member that is placed between the base plate and the semiconductor circuit unit and secures electrical insulation of the base plate and the semiconductor circuit unit. A rigidity or thickness of the connecting member is less than a rigidity or thickness of the base plate.Type: GrantFiled: October 30, 2009Date of Patent: February 3, 2015Assignee: Hitachi Automotive Systems, Ltd.Inventors: Kinya Nakatsu, Hiroshi Hozoji, Takeshi Tokuyama, Yusuke Takagi, Toshiya Satoh, Taku Oyama, Takanori Ninomiya
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Publication number: 20140211373Abstract: The purpose of the present invention is to provide composite particulates and a method for manufacturing the composite particulates, the particulates including an organic substance and a metal having exceptional adhesiveness to a substrate, allowing easier control over metallic particle dispersion, facilitating control over electrical conductivity, and exhibiting high electroconductivity. The metallic particulates are characterized in that they have a thiol compound coordinated on the surfaces thereof, they are adsorbed onto a substrate with a silane compound interposed therebetween, and the thiol compound on the surfaces is subjected to oxidative polymerization, thereby yielding a structure in which an electroconductive polymer is coordinate-bonded to the surface of the metallic particulates.Type: ApplicationFiled: August 2, 2012Publication date: July 31, 2014Applicant: HITACHI, LTD.Inventors: Taku Oyama, Satoru Amou, Kosuke Kuwabara, Takahito Muraki