Patents by Inventor Hiroshi Tonomura

Hiroshi Tonomura 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: 20230120982
    Abstract: A connector with cap includes a connector body and a cap formed of a plastic material that has plasticity before being cured and that cures under a predetermined condition, the cap being cured in a state where the cap is removably closing an opening of the connector body located on a side on which a mating connector is fitted. The connector with cap further includes a protective member formed of an insulating material and arranged inside the connector body on a side of the opening such that the protective member is positioned between the cap and the connector terminal, the protective member being configured to protect the connector terminal from contacting the plastic material.
    Type: Application
    Filed: September 27, 2022
    Publication date: April 20, 2023
    Applicant: YAZAKI COPORATION
    Inventor: Hiroshi TONOMURA
  • Patent number: 9101063
    Abstract: A power module substrate includes a ceramics substrate composed of Si3N4 having a top face. A metal plate composed of aluminum having a purity of 99.99% or more is joined to the top face of the ceramics substrate with a brazing filler metal which includes a melting-point lowering element interposed therebetween. A high concentration section is formed at a joint interface at which the metal plate is joined to the ceramics substrate, has an oxygen concentration greater than an oxygen concentration in the metal plate and in the ceramics substrate, and has a thickness of less than or equal to 4 nm.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: August 4, 2015
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshirou Kuromitsu, Kazuhiro Akiyama, Takeshi Kitahara, Hiroshi Tonomura
  • Patent number: 9095062
    Abstract: A power module substrate includes a ceramics substrate composed of Al2O3 having a top face. A metal plate composed of aluminum having a purity of 99.99% or more is joined to the top face of the ceramics substrate with a brazing filler metal which includes silicon interposed therebetween. A high concentration section is formed at a joint interface at which the metal plate is joined to the ceramics substrate, and has a silicon concentration that is more than five times the silicon concentration in the metal plate.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: July 28, 2015
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshirou Kuromitsu, Kazuhiro Akiyama, Takeshi Kitahara, Hiroshi Tonomura
  • Patent number: 9079264
    Abstract: Disclosed is a ceramic substrate including silicon in which the concentration of a silicon oxide and a silicon composite oxide in the surface thereof is less than or equal to 2.7 Atom %.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: July 14, 2015
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Hiroshi Tonomura, Takeshi Kitahara, Hiroya Ishizuka, Yoshirou Kuromitsu, Yoshiyuki Nagatomo
  • Patent number: 9076755
    Abstract: A method for producing a substrate for a power module with a heat sink includes a heat sink bonding step for bonding a heat sink to the surface of a second metal plate. The heat sink bonding step includes: a Cu layer forming step for forming a Cu layer on at least one of the surface of the second metal plate and a bonding surface of the heat sink; a heat sink laminating step for laminating the second metal plate and the heat sink via the Cu layer; a heat sink heating step for pressing in the lamination direction and heating the second metal plate and the heat sink, to diffuse Cu in the Cu layer into the second metal plate and the heat sink; and a molten metal solidifying step for solidifying the molten metal formed with Cu diffusion, to bond the second metal plate and the heat sink.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: July 7, 2015
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Hiroshi Tonomura, Yoshiyuki Nagatomo, Yoshirou Kuromitsu
  • Publication number: 20150022977
    Abstract: A power module substrate includes: a ceramics substrate having a surface; and a metal plate connected to the surface of the ceramics substrate, composed of aluminum, and including Cu at a joint interface between the ceramics substrate and the metal plate, wherein a Cu concentration at the joint interface is in the range of 0.05 to 5 wt %.
    Type: Application
    Filed: October 10, 2014
    Publication date: January 22, 2015
    Inventors: Yoshirou Kuromitsu, Yoshiyuki Nagatomo, Takeshi Kitahara, Hiroshi Tonomura, Kazuhiro Akiyama
  • Patent number: 8921996
    Abstract: A power module substrate includes: a ceramics substrate having a surface; and a metal plate connected to the surface of the ceramics substrate, composed of aluminum, and including Cu at a joint interface between the ceramics substrate and the metal plate, wherein a Cu concentration at the joint interface is in the range of 0.05 to 5 wt %.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: December 30, 2014
    Assignee: Mitsubishi Materials Corporation
    Inventors: Yoshirou Kuromitsu, Yoshiyuki Nagatomo, Takeshi Kitahara, Hiroshi Tonomura, Kazuhiro Akiyama
  • Publication number: 20140078684
    Abstract: A power module substrate includes: a ceramics substrate composed of AlN, having a top face; a metal plate composed of pure aluminum and joined to the top face of the ceramics substrate with a brazing filler metal including silicon interposed therebetween; and a high concentration section formed at a joint interface at which the metal plate is joined to the ceramics substrate, having a silicon concentration that is more than five times the silicon concentration in the metal plate.
    Type: Application
    Filed: November 13, 2013
    Publication date: March 20, 2014
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshirou Kuromitsu, Kazuhiro Akiyama, Takeshi Kitahara, Hiroshi Tonomura
  • Publication number: 20140071633
    Abstract: A power module substrate includes: a ceramics substrate composed of AlN, having a top face; a metal plate composed of pure aluminum and joined to the top face of the ceramics substrate with a brazing filler metal including silicon interposed therebetween; and a high concentration section formed at a joint interface at which the metal plate is joined to the ceramics substrate, having a silicon concentration that is more than five times the silicon concentration in the metal plate.
    Type: Application
    Filed: November 13, 2013
    Publication date: March 13, 2014
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshirou Kuromitsu, Kazuhiro Akiyama, Takeshi Kitahara, Hiroshi Tonomura
  • Patent number: 8637777
    Abstract: A power module substrate having a heatsink, includes: a power module substrate having an insulating substrate having a first face and a second face, a circuit layer formed on the first face, and a metal layer formed on the second face; and a heatsink directly connected to the metal layer, cooling the power module substrate, wherein a ratio B/A is in the range defined by 1.55?B/A?20, where a thickness of the circuit layer is represented as A, and a thickness of the metal layer is represented as B.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: January 28, 2014
    Assignee: Mitsubishi Materials Corporation
    Inventors: Hiromasa Hayashi, Takeshi Kitahara, Hiroshi Tonomura, Hiroya Ishizuka, Yoshirou Kuromitsu
  • Publication number: 20140015140
    Abstract: A power module substrate includes: a ceramics substrate having a surface; and a metal plate connected to the surface of the ceramics substrate, composed of aluminum, and including Cu at a joint interface between the ceramics substrate and the metal plate, wherein a Cu concentration at the joint interface is in the range of 0.05 to 5 wt %.
    Type: Application
    Filed: September 16, 2013
    Publication date: January 16, 2014
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshirou Kuromitsu, Yoshiyuki Nagatomo, Takeshi Kitahara, Hiroshi Tonomura, Kazuhiro Akiyama
  • Publication number: 20130335921
    Abstract: Provided is a power module substrate including a ceramic substrate, and a metal plate which contains aluminum or an aluminum alloy, and which is stacked and bonded on a surface of the ceramic substrate, wherein one or more additional elements selected from Ag, Zn, Ge, Mg, Ca, Ga, and Li are solid-solubilized in the metal plate, and the Ag concentration in the metal plate in the vicinity of the interface with the ceramic substrate is greater than or equal to 0.05% by mass and less than or equal to 10% by mass, or the total concentration of Zn, Ge, Mg, Ca, Ga, and Li in the metal plate in the vicinity of the interface with the ceramic substrate is greater than or equal to 0.01% by mass and less than or equal to 5% by mass.
    Type: Application
    Filed: October 19, 2010
    Publication date: December 19, 2013
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshiyuki Nagatomo, Kazuhiro Akiyama, Hiroshi Tonomura, Nobuyuki Terasaki, Yoshirou Kuromitsu
  • Patent number: 8609993
    Abstract: A power module substrate includes: a ceramics substrate composed of AlN, having a top face; a metal plate composed of pure aluminum and joined to the top face of the ceramics substrate with a brazing filler metal including silicon interposed therebetween; and a high concentration section formed at a joint interface at which the metal plate is joined to the ceramics substrate, having a silicon concentration that is more than five times the silicon concentration in the metal plate.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: December 17, 2013
    Assignee: Mitsubishi Materials Corporation
    Inventors: Yoshirou Kuromitsu, Kazuhiro Akiyama, Takeshi Kitahara, Hiroshi Tonomura
  • Patent number: 8564118
    Abstract: A power module substrate includes: a ceramics substrate having a surface; and a metal plate connected to the surface of the ceramics substrate, composed of aluminum, and including Cu at a joint interface between the ceramics substrate and the metal plate, wherein a Cu concentration at the joint interface is in the range of 0.05 to 5 wt %.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: October 22, 2013
    Assignee: Mitsubishi Materials Corporation
    Inventors: Yoshirou Kuromitsu, Yoshiyuki Nagatomo, Takeshi Kitahara, Hiroshi Tonomura, Kazuhiro Akiyama
  • Publication number: 20130232783
    Abstract: Disclosed is a ceramic substrate including silicon in which the concentration of a silicon oxide and a silicon composite oxide in the surface thereof is less than or equal to 2.7 Atom %.
    Type: Application
    Filed: April 22, 2013
    Publication date: September 12, 2013
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Hiroshi Tonomura, Takeshi Kitahara, Hiroya Ishizuka, Yoshirou Kuromitsu, Yoshiyuki Nagatomo
  • Publication number: 20130010429
    Abstract: A method for producing a substrate for a power module with a heat sink includes a heat sink bonding step for bonding a heat sink to the surface of a second metal plate. The heat sink bonding step includes: a Cu layer forming step for forming a Cu layer on at least one of the surface of the second metal plate and a bonding surface of the heat sink; a heat sink laminating step for laminating the second metal plate and the heat sink via the Cu layer; a heat sink heating step for pressing in the lamination direction and heating the second metal plate and the heat sink, to diffuse Cu in the Cu layer into the second metal plate and the heat sink; and a molten metal solidifying step for solidifying the molten metal formed with Cu diffusion, to bond the second metal plate and the heat sink.
    Type: Application
    Filed: September 7, 2010
    Publication date: January 10, 2013
    Applicant: Mitsubishi Materials Corporation
    Inventors: Hiroshi Tonomura, Yoshiyuki Nagatomo, Yoshirou Kuromitsu
  • Patent number: 8198540
    Abstract: A power element mounting substrate including a circuit layer brazed to a surface of a ceramic plate, and a power element soldered to a front surface of the circuit layer, wherein the circuit layer is constituted using an Al alloy with an average purity of more than or equal to 98.0 wt % and less than or equal to 99.9 wt %, Fe concentration of the circuit layer at a side of a surface to be brazed to the ceramic plate is less than 0.1 wt %, and Fe concentration of the circuit layer at a side of the surface opposite to the surface to be brazed is more than or equal to 0.1 wt %.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: June 12, 2012
    Assignee: Mitsubishi Materials Corporation
    Inventors: Yoshirou Kuromitsu, Hiroya Ishizuka, Hiroshi Miyata, Takeshi Kitahara, Hiroshi Tonomura
  • Patent number: 8104243
    Abstract: The present invention provides a projected corner column A1 used for an external corner part of a wall of a building, in which a narrow chamfered part 8 is formed on an apex corner 3 of the projected corner column A1, the narrow chamfered part 8 has a continuous curved surfaces 8a, 8b rather than a flat surface so that, when the projected corner column A1 is exposed to a daytime sunlight, light parts and shade parts similar to light parts S and shade parts D that generate on surface patterned parts of a board piece 1a generate on the chamfered part 8, whereby the chamfered part 8 on the apex corner 3 of the projected corner column A1 becomes less visible as far as possible, and shades similar to the shades (S, D) that generate on the surface patterned parts generate on the chamfered part 8 to give a continuity to the patterns on the left and right board pieces 1a, 1a.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: January 31, 2012
    Assignee: Nichiha Corporation
    Inventors: Hiroshi Takeshima, Nobuyuki Kobayashi, Hiroshi Tonomura
  • Publication number: 20110074010
    Abstract: A power module substrate includes: a ceramics substrate having a surface; and a metal plate connected to the surface of the ceramics substrate, composed of aluminum, and including Cu at a joint interface between the ceramics substrate and the metal plate, wherein a Cu concentration at the joint interface is in the range of 0.05 to 5 wt %.
    Type: Application
    Filed: June 5, 2009
    Publication date: March 31, 2011
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshirou Kuromitsu, Yoshiyuki Nagatomo, Takeshi Kitahara, Hiroshi Tonomura, Kazuhiro Akiyama
  • Publication number: 20110067906
    Abstract: A power module substrate includes: a ceramics substrate composed of AlN, having a top face; a metal plate composed of pure aluminum and joined to the top face of the ceramics substrate with a brazing filler metal including silicon interposed therebetween; and a high concentration section formed at a joint interface at which the metal plate is joined to the ceramics substrate, having a silicon concentration that is more than five times the silicon concentration in the metal plate.
    Type: Application
    Filed: May 15, 2009
    Publication date: March 24, 2011
    Applicant: Mitsubishi Materials Corporation
    Inventors: Yoshirou Kuromitsu, Kazuhiro Akiyama, Takeshi Kitahara, Hiroshi Tonomura