Patents by Inventor Haruki Hamada
Haruki Hamada 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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Publication number: 20180026170Abstract: A thermoelectric material having improved thermoelectric properties and a method for producing the thermoelectric material are provided. The thermoelectric material contains (Mn1-x-yVxFey)Si? (0.012?x?0.045, 0?y?0.06, 1.7???1.8) and is produced by homogenously melting the raw materials including Mn, Si, and V mixed to a composition of the thermoelectric material, and then solidifying the melted raw materials at a cooling rate of 13 K/hour or less.Type: ApplicationFiled: February 28, 2017Publication date: January 25, 2018Applicant: TOHOKU UNIVERSITYInventors: Yuzuru MIYAZAKI, Kei HAYASHI, Kunio YUBUTA, Haruki HAMADA, Mika SATO
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Patent number: 9654046Abstract: A power inverter comprises at least a box-shaped housing; and a power module, a smoothing capacitor, a base plate made of a flat plate, and a rotating electric machine control circuit board arranged in order in the housing. The base plate is arranged with the fringes fixed to the inner wall surfaces of the housing, and the smoothing capacitor and rotating electric machine control circuit board are fixed.Type: GrantFiled: April 30, 2014Date of Patent: May 16, 2017Assignee: Hitachi, Ltd.Inventors: Kenichiro Nakajima, Haruki Hamada, Hideyo Suzuki
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Patent number: 9301434Abstract: Provided is a power conversion apparatus that includes a power semiconductor module, a smoothing capacitor module, an alternating-current bus bar, a control circuit unit to control the power semiconductor element, and a flow channel formation body to form a flow channel through which a cooling medium flows. The power semiconductor module has a first heat dissipation portion and a second heat dissipation portion facing the first heat dissipation portion. A flow channel formation body external portion of the flow channel formation body has a first surface wall that faces the first heat dissipation portion with the flow channel therebetween, a second surface wall that faces the second heat dissipation portion with the flow channel therebetween, and a sidewall to connect the first surface wall and the second surface wall. The sidewall has an opening to insert the power semiconductor module into the flow channel.Type: GrantFiled: July 25, 2012Date of Patent: March 29, 2016Assignee: Hitachi Automotive Systems, Ltd.Inventors: Morio Kuwano, Yosei Hara, Haruki Hamada
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Publication number: 20140232313Abstract: A power inverter comprises at least a box-shaped housing; and a power module, a smoothing capacitor, a base plate made of a flat plate, and a rotating electric machine control circuit board arranged in order in the housing. The base plate is arranged with the fringes fixed to the inner wall surfaces of the housing, and the smoothing capacitor and rotating electric machine control circuit board are fixed.Type: ApplicationFiled: April 30, 2014Publication date: August 21, 2014Applicant: Hitachi, Ltd.Inventors: Kenichiro NAKAJIMA, Haruki HAMADA, Hideyo SUZUKI
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Patent number: 8755209Abstract: A power inverter comprises at least a box-shaped housing; and a power module, a smoothing capacitor, a base plate made of a flat plate, and a rotating electric machine control circuit board arranged in order in the housing. The base plate is arranged with the fringes fixed to the inner wall surfaces of the housing, and the smoothing capacitor and rotating electric machine control circuit board are fixed.Type: GrantFiled: June 25, 2013Date of Patent: June 17, 2014Assignee: Hitachi, Ltd.Inventors: Kenichiro Nakajima, Haruki Hamada, Hideyo Suzuki
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Publication number: 20140160822Abstract: Provided is a power conversion apparatus that includes a power semiconductor module, a smoothing capacitor module, an alternating-current bus bar, a control circuit unit to control the power semiconductor element, and a flow channel formation body to form a flow channel through which a cooling medium flows. The power semiconductor module has a first heat dissipation portion and a second heat dissipation portion facing the first heat dissipation portion. A flow channel formation body external portion of the flow channel formation body has a first surface wall that faces the first heat dissipation portion with the flow channel therebetween, a second surface wall that faces the second heat dissipation portion with the flow channel therebetween, and a sidewall to connect the first surface wall and the second surface wall. The sidewall has an opening to insert the power semiconductor module into the flow channel.Type: ApplicationFiled: July 25, 2012Publication date: June 12, 2014Applicant: Hitachi Automotive Systems, Ltd.Inventors: Morio Kuwano, Yosei Hara, Haruki Hamada
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Patent number: 8614906Abstract: A power inverter comprises at least a box-shaped housing; and a power module, a smoothing capacitor, a base plate made of a flat plate, and a rotating electric machine control circuit board arranged in order in the housing. The base plate is arranged with the fringes fixed to the inner wall surfaces of the housing, and the smoothing capacitor and rotating electric machine control circuit board are fixed.Type: GrantFiled: March 12, 2012Date of Patent: December 24, 2013Assignee: Hitachi, Ltd.Inventors: Kenichiro Nakajima, Haruki Hamada, Hideyo Suzuki
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Publication number: 20130285585Abstract: A power inverter comprises at least a box-shaped housing; and a power module, a smoothing capacitor, a base plate made of a flat plate, and a rotating electric machine control circuit board arranged in order in the housing. The base plate is arranged with the fringes fixed to the inner wall surfaces of the housing, and the smoothing capacitor and rotating electric machine control circuit board are fixed.Type: ApplicationFiled: June 25, 2013Publication date: October 31, 2013Inventors: Kenichiro NAKAJIMA, Haruki Hamada, Hideyo Suzuki
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Publication number: 20120170340Abstract: A power inverter comprises at least a box-shaped housing; and a power module, a smoothing capacitor, a base plate made of a flat plate, and a rotating electric machine control circuit board arranged in order in the housing. The base plate is arranged with the fringes fixed to the inner wall surfaces of the housing, and the smoothing capacitor and rotating electric machine control circuit board are fixed.Type: ApplicationFiled: March 12, 2012Publication date: July 5, 2012Applicant: Hitachi, Ltd.Inventors: Kenichiro NAKAJIMA, Haruki Hamada, Hideyo Suzuki
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Patent number: 8159849Abstract: A power inverter comprises at least a box-shaped housing; and a power module, a smoothing capacitor, a base plate made of a flat plate, and a rotating electric machine control circuit board arranged in order in the housing. The base plate is arranged with the fringes fixed to the inner wall surfaces of the housing, and the smoothing capacitor and rotating electric machine control circuit board are fixed.Type: GrantFiled: May 2, 2011Date of Patent: April 17, 2012Assignee: Hitachi, Ltd.Inventors: Kenichiro Nakajima, Haruki Hamada, Hideyo Suzuki
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Patent number: 8072760Abstract: Water paths for feeding a coolant water through a power converter mounted on an automobile are arranged in parallel, openings are formed on the water paths respectively, heat radiating fins project from the openings, and the openings are closed by a base plate of the power module. Further, the base plate of the power module includes a metal in addition to copper to increase a hardness of the base plate, so that a deterioration of the flatness during fixing the fins with brazing is restrained.Type: GrantFiled: April 14, 2010Date of Patent: December 6, 2011Assignee: Hitachi, Ltd.Inventors: Takeshi Matsuo, Haruki Hamada, Atsuo Nishihara, Masanori Musou
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Publication number: 20110205724Abstract: A power inverter comprises at least a box-shaped housing; and a power module, a smoothing capacitor, a base plate made of a flat plate, and a rotating electric machine control circuit board arranged in order in the housing. The base plate is arranged with the fringes fixed to the inner wall surfaces of the housing, and the smoothing capacitor and rotating electric machine control circuit board are fixed.Type: ApplicationFiled: May 2, 2011Publication date: August 25, 2011Applicant: Hitachi, Ltd.Inventors: Kenichiro NAKAJIMA, Haruki Hamada, Hideyo Suzuki
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Patent number: 7957169Abstract: A power inverter comprises at least a box-shaped housing; and a power module, a smoothing capacitor, a base plate made of a flat plate, and a rotating electric machine control circuit board arranged in order in the housing. The base plate is arranged with the fringes fixed to the inner wall surfaces of the housing, and the smoothing capacitor and rotating electric machine control circuit board are fixed.Type: GrantFiled: April 5, 2007Date of Patent: June 7, 2011Assignee: Hitachi, Ltd.Inventors: Kenichiro Nakajima, Haruki Hamada, Hideyo Suzuki
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Publication number: 20110032676Abstract: Water paths for feeding a coolant water through a power converter mounted on an automobile are arranged in parallel, openings are formed on the water paths respectively, heat radiating fins project from the openings, and the openings are closed by a base plate of the power module. Further, the base plate of the power module includes a metal in addition to copper to increase a hardness of the base plate, so that a deterioration of the flatness during fixing the fins with brazing is restrained.Type: ApplicationFiled: April 14, 2010Publication date: February 10, 2011Inventors: Takeshi MATSUO, Haruki Hamada, Atsuo Nishihara, Masanori Musou
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Patent number: 7859105Abstract: To provide a power converter equipped with a current detector which is small and can carry out highly accurate current detection, in the power converter equipped with a power module 16 having a power controlling semiconductor element 7 disposed on the power module base 27 with a ceramic substrate 28 interposed, and a control unit 26 for controlling the operation of the power controlling semiconductor element 7, a current detector 40 having a magnetic detecting unit 47 which is disposed in the detection conductor 11, electrically connected to the power controlling semiconductor element 7 and disposed on the power module base 27 with the ceramic substrate 28 interposed, and has a magnetic detecting semiconductor element 43 electrically connected to the control unit 26 is provided in the power module 16; and relative distance between the detection conductor 11 and the power module base 27 is larger than the relative distance between the current detection electrode 42 and the power module base 27.Type: GrantFiled: April 4, 2003Date of Patent: December 28, 2010Assignee: Hitachi, Ltd.Inventors: Kinya Nakatsu, Koichi Yahata, Masato Takahashi, Mitsufumi Iwanaka, Ryuichi Saito, Haruki Hamada
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Patent number: 7719838Abstract: The power inverter includes: a case made of a metal; a first power module provided in the case and including a DC terminal and an AC terminal; a second power module provided in the case and including a DC terminal and an AC terminal; and a cooling formation body for decreasing heat generated from the first and second power modules. The first and second power modules are disposed in a manner such that the DC terminals face each other.Type: GrantFiled: January 25, 2008Date of Patent: May 18, 2010Assignee: Hitachi, Ltd.Inventors: Kenichiro Nakajima, Haruki Hamada, Koichi Yahata, Hideki Homma, Hideyo Suzuki
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Patent number: 7710721Abstract: Water paths for feeding a coolant water through a power converter mounted on an automobile are arranged in parallel, openings are formed on the water paths respectively, heat radiating fins project from the openings, and the openings are closed by a base plate of the power module. Further, the base plate of the power module includes a metal in addition to copper to increase a hardness of the base plate, so that a deterioration of the flatness during fixing the fins with brazing is restrained.Type: GrantFiled: October 17, 2006Date of Patent: May 4, 2010Assignee: Hitachi, Ltd.Inventors: Takeshi Matsuo, Haruki Hamada, Atsuo Nishihara, Masanori Musou
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Publication number: 20080225487Abstract: The power inverter includes: a case made of a metal; a first power module provided in the case and including a DC terminal and an AC terminal; a second power module provided in the case and including a DC terminal and an AC terminal; and a cooling formation body for decreasing heat generated from the first and second power modules. The first and second power modules are disposed in a manner such that the DC terminals face each other.Type: ApplicationFiled: January 25, 2008Publication date: September 18, 2008Applicant: Hitachi, Ltd.Inventors: Kenichiro NAKAJIMA, Haruki Hamada, Koichi Yahata, Hideki Homma, Hideyo Suziki
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Publication number: 20070253164Abstract: Water paths for feeding a coolant water through a power converter mounted on an automobile are arranged in parallel, openings are formed on the water paths respectively, heat radiating fins project from the openings, and the openings are closed by a base plate of the power module. Further, the base plate of the power module includes a metal in addition to copper to increase a hardness of the base plate, so that a deterioration of the flatness during fixing the fins with brazing is restrained.Type: ApplicationFiled: October 17, 2006Publication date: November 1, 2007Inventors: Takeshi Matsuo, Haruki Hamada, Atsuo Nishihara, Masanori Musou
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Patent number: D556686Type: GrantFiled: October 20, 2006Date of Patent: December 4, 2007Assignee: Hitachi, Ltd.Inventors: Takeshi Matsuo, Haruki Hamada, Atsuo Nishihara, Masanori Musou