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).

  • Publication number: 20180026170
    Abstract: 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: Application
    Filed: February 28, 2017
    Publication date: January 25, 2018
    Applicant: TOHOKU UNIVERSITY
    Inventors: Yuzuru MIYAZAKI, Kei HAYASHI, Kunio YUBUTA, Haruki HAMADA, Mika SATO
  • Patent number: 9654046
    Abstract: 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: Grant
    Filed: April 30, 2014
    Date of Patent: May 16, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Kenichiro Nakajima, Haruki Hamada, Hideyo Suzuki
  • Patent number: 9301434
    Abstract: 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: Grant
    Filed: July 25, 2012
    Date of Patent: March 29, 2016
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Morio Kuwano, Yosei Hara, Haruki Hamada
  • Publication number: 20140232313
    Abstract: 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: Application
    Filed: April 30, 2014
    Publication date: August 21, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Kenichiro NAKAJIMA, Haruki HAMADA, Hideyo SUZUKI
  • Patent number: 8755209
    Abstract: 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: Grant
    Filed: June 25, 2013
    Date of Patent: June 17, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Kenichiro Nakajima, Haruki Hamada, Hideyo Suzuki
  • Publication number: 20140160822
    Abstract: 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: Application
    Filed: July 25, 2012
    Publication date: June 12, 2014
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Morio Kuwano, Yosei Hara, Haruki Hamada
  • Patent number: 8614906
    Abstract: 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: Grant
    Filed: March 12, 2012
    Date of Patent: December 24, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Kenichiro Nakajima, Haruki Hamada, Hideyo Suzuki
  • Publication number: 20130285585
    Abstract: 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: Application
    Filed: June 25, 2013
    Publication date: October 31, 2013
    Inventors: Kenichiro NAKAJIMA, Haruki Hamada, Hideyo Suzuki
  • Publication number: 20120170340
    Abstract: 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: Application
    Filed: March 12, 2012
    Publication date: July 5, 2012
    Applicant: Hitachi, Ltd.
    Inventors: Kenichiro NAKAJIMA, Haruki Hamada, Hideyo Suzuki
  • Patent number: 8159849
    Abstract: 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: Grant
    Filed: May 2, 2011
    Date of Patent: April 17, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Kenichiro Nakajima, Haruki Hamada, Hideyo Suzuki
  • Patent number: 8072760
    Abstract: 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: Grant
    Filed: April 14, 2010
    Date of Patent: December 6, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Takeshi Matsuo, Haruki Hamada, Atsuo Nishihara, Masanori Musou
  • Publication number: 20110205724
    Abstract: 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: Application
    Filed: May 2, 2011
    Publication date: August 25, 2011
    Applicant: Hitachi, Ltd.
    Inventors: Kenichiro NAKAJIMA, Haruki Hamada, Hideyo Suzuki
  • Patent number: 7957169
    Abstract: 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: Grant
    Filed: April 5, 2007
    Date of Patent: June 7, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Kenichiro Nakajima, Haruki Hamada, Hideyo Suzuki
  • Publication number: 20110032676
    Abstract: 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: Application
    Filed: April 14, 2010
    Publication date: February 10, 2011
    Inventors: Takeshi MATSUO, Haruki Hamada, Atsuo Nishihara, Masanori Musou
  • Patent number: 7859105
    Abstract: 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: Grant
    Filed: April 4, 2003
    Date of Patent: December 28, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Kinya Nakatsu, Koichi Yahata, Masato Takahashi, Mitsufumi Iwanaka, Ryuichi Saito, Haruki Hamada
  • Patent number: 7719838
    Abstract: 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: Grant
    Filed: January 25, 2008
    Date of Patent: May 18, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Kenichiro Nakajima, Haruki Hamada, Koichi Yahata, Hideki Homma, Hideyo Suzuki
  • Patent number: 7710721
    Abstract: 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: Grant
    Filed: October 17, 2006
    Date of Patent: May 4, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Takeshi Matsuo, Haruki Hamada, Atsuo Nishihara, Masanori Musou
  • Publication number: 20080225487
    Abstract: 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: Application
    Filed: January 25, 2008
    Publication date: September 18, 2008
    Applicant: Hitachi, Ltd.
    Inventors: Kenichiro NAKAJIMA, Haruki Hamada, Koichi Yahata, Hideki Homma, Hideyo Suziki
  • Publication number: 20070253164
    Abstract: 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: Application
    Filed: October 17, 2006
    Publication date: November 1, 2007
    Inventors: Takeshi Matsuo, Haruki Hamada, Atsuo Nishihara, Masanori Musou
  • Patent number: D556686
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: December 4, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Takeshi Matsuo, Haruki Hamada, Atsuo Nishihara, Masanori Musou