Patents by Inventor Kosuke Nakano

Kosuke Nakano 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: 20140363221
    Abstract: A first joining object and a second joining object are joined to each other using an insert material. The first joining object and/or the second joining object has a first metal composed of Sn or an alloy containing Sn. The insert material contains, as a main component, a second metal which is an alloy containing at least one selected from among Ni, Mn, Al and Cr, and Cu, and is located between the first joining object and the second joining object. When subjected to heat treatment to produce an intermetallic compound of the first metal and the second metal, the first joining object and the second joining object are joined to each other.
    Type: Application
    Filed: August 27, 2014
    Publication date: December 11, 2014
    Inventors: Kosuke Nakano, Hidekiyo Takaoka
  • Publication number: 20140356055
    Abstract: When a first joining object and a second joining object are joined to each other, the first joining object has a first metal composed of Sn or an alloy containing Sn, the second joining object has a second metal composed of an alloy containing at least one selected from among Ni, Mn, Al and Cr, and Cu. The first joining object and the second joining object are subjected to heat treatment in a state of being in contact with each other to produce an intermetallic compound at an interface between both joining objects such that both joining object are joined to each other. An alloy containing Sn in an amount of 70% by weight or more is used as the first metal. An alloy containing Sn in an amount of 85% by weight or more is used as the first metal.
    Type: Application
    Filed: August 14, 2014
    Publication date: December 4, 2014
    Inventors: Kosuke Nakano, Yasuyuki Seikmoto, Hidekiyo Takaoka, Daisuke Tsuruga
  • Patent number: 8899014
    Abstract: An emission control system for an engine includes a catalyst and an exhaust-gas sensor provided downstream of the catalyst in a flow direction of exhaust gas. The exhaust-gas sensor includes a sensor element that includes a pair of electrodes and a solid electrolyte body located between the electrodes. The emission control system further includes a constant current supply portion that changes an output characteristic of the exhaust-gas sensor by applying a constant current between the electrodes, a rich direction control portion that performs a rich direction control after a fuelling-stop control, and a characteristic control portion that performs a rich responsiveness control during the rich direction control. In the rich direction control, an air-fuel ratio of the exhaust gas is made to be richer. In the rich responsiveness control, the constant current supply portion increases a detection responsiveness of the exhaust-gas sensor with respect to rich gas.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: December 2, 2014
    Assignee: Denso Corporation
    Inventors: Kosuke Nakano, Shingo Nakata, Mikiyasu Matsuoka
  • Publication number: 20140345939
    Abstract: In joining a first metal member composed of a first metal to a second metal member composed of a second metal with a joining material interposed therebetween, the joining material including a low melting point metal having a lower melting point than the first metal and/or the second metal, the low melting point metal composing the joining material is Sn or an alloy containing Sn, at least one of the first metal and the second metal is a metal or an alloy which forms an intermetallic compound with the low melting point metal composing the joining material, and heat treatment is performed at a temperature at which the low melting point metal melts in a state of locating the joining material between the first metal member and the second metal member.
    Type: Application
    Filed: August 15, 2014
    Publication date: November 27, 2014
    Inventors: Kosuke Nakano, Hidekiyo Takaoka
  • Publication number: 20140340816
    Abstract: An electronic part that includes an electronic part main body and an external electrode on the surface of the electronic part main body. The external electrode includes at least one alloy layer selected from among a Cu—Ni alloy layer and a Cu—Mn alloy layer, and a Sn-containing layer on the outer side of the alloy layer. The Sn-containing layer is the outermost layer of the external electrode. The Sn-containing layer is in contact with the alloy layer.
    Type: Application
    Filed: August 4, 2014
    Publication date: November 20, 2014
    Inventors: Hidekiyo Takaoka, Kosuke Nakano, Yutaka Ota, Kenichi Kawasaki
  • Patent number: 8878474
    Abstract: Provided is a motor control device (10) for controlling a motor (5) provided with a plurality of sets of windings, in which, when a current control unit (23) detects a short-circuit failure as a primary failure, the current control unit (23) continues the control, and, further, when the current control unit (23) detects a secondary failure, the current control unit (23) provides control of opening a power supply relay (3). Accordingly, in a case where a failure of a winding of a motor or an inverter occurs, a torque pulsation is restrained and a sufficient output torque is provided, and further, in a case where a secondary failure occurs, excessive heat generation and current consumption are prevented and the cost of the device is reduced.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: November 4, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Isao Kezobo, Kosuke Nakano, Yoshihito Asao
  • Patent number: 8878477
    Abstract: An electric motor driving apparatus having a failure detection circuit includes: a bridge circuit driving an electric motor; a PWM control circuit generating voltage instruction for driving the electric motor; a PWM signal generation circuit generating a PWM signal; a DC current detection circuit detecting DC current of the bridge circuit; a phase current calculation circuit calculating output phase current of the bridge circuit, based on the DC current and PWM signal; and a failure detection circuit detecting failure of the DC current detection circuit. The failure detection circuit determines failure of the DC current detection circuit from the DC current detected values in a zero voltage period in which the high-potential-side arms of the bridge circuit are all ON and in a zero voltage period in which the low-potential-side arms are all ON.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: November 4, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kosuke Nakano, Tetsuya Kojima, Satoshi Azuma, Isao Kezobo, Ryuichi Takiguchi
  • Publication number: 20140246999
    Abstract: There is provided a motor control device for controlling a motor including plural sets of windings, which is configured so that, when a fault detection means detects a fault, inverters in the normal side other than in the fault side are continued to be controlled by normal-time current control means and further, inverters in the fault side are continued to be controlled by fault-time voltage commands generated by a fault-time current control means configured with a fault-time normal-side command generator and a fault-time fault-side command generator, so as to emphasis a torque ripple of the motor when a winding fault of the motor or an inverter fault occurs, to thereby cause a user to surely recognize the fault.
    Type: Application
    Filed: January 27, 2012
    Publication date: September 4, 2014
    Applicant: Mitsubishi Electric Corporation
    Inventors: Isao Kezobo, Kosuke Nakano, Yoshihito Asao, Akira Furukawa
  • Publication number: 20140193650
    Abstract: An electroconductive material that includes a metal component containing a first metal and a second metal having a higher melting point than the first metal, and has a configuration in which the first metal is Sn or an alloy containing Sn, and the second metal is a Cu—Cr alloy which forms, with the first metal, an intermetallic compound exhibiting a melting point of 310° C. or higher. The first metal can be Sn alone or an alloy containing Sn and at least one of Cu, Ni, Ag, Au, Sb, Zn, Bi, In, Ge, Al, Co, Mn, Fe, Cr, Mg, Pd, Si, Sr, Te, and P.
    Type: Application
    Filed: March 13, 2014
    Publication date: July 10, 2014
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Kosuke Nakano, Hidekiyo Takaoka
  • Publication number: 20140178703
    Abstract: An electroconductive material that includes a metal component containing a first metal and a second metal having a higher melting point than the first metal, and has a configuration in which the first metal is Sn or an alloy containing Sn, and the second metal is a Cu—Al alloy which forms, with the first metal, an intermetallic compound exhibiting a melting point of 310° C. or higher. The first metal can be Sn alone or an alloy containing Sn and at least one of Cu, Ni, Ag, Au, Sb, Zn, Bi, In, Ge, Al, Co, Mn, Fe, Cr, Mg, Pd, Si, Sr, Te, and P.
    Type: Application
    Filed: March 3, 2014
    Publication date: June 26, 2014
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Kosuke Nakano, Hidekiyo Takaoka
  • Patent number: 8756914
    Abstract: An emission control system for an engine includes a catalyst and an exhaust-gas sensor provided downstream of the catalyst in a flow direction of exhaust gas. The exhaust-gas sensor includes a sensor element that includes a pair of electrodes and a solid electrolyte body located between the electrodes. The emission control system further includes a constant current supply portion that changes an output characteristic of the exhaust-gas sensor by applying a constant current between the electrodes, a catalytic-state determination portion which determines a rich/lean state of the catalyst, a rich direction control portion which performs and terminates a rich direction control depending on the rich/lean state of the catalyst, a lean direction control portion which performs a lean direction control after the rich direction control, and a characteristic control portion which performs a lean responsiveness control at least during the lean direction control.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: June 24, 2014
    Assignee: Denso Corporation
    Inventors: Kosuke Nakano, Shingo Nakata, Mikiyasu Matsuoka
  • Publication number: 20140077745
    Abstract: The invention provides a drive control device that comprises: inverters that are connected to a motor; a variable resistive element that is connected between the motor and each of the inverters; a current/voltage detection device connected between the motor and each of the inverters; and a controller that, when detecting a fault of an inverter that drives the motor based on a detection signal from the current/voltage detection device, gradually increases a resistance value of a variable resistive element provided between the faulty inverter and the motor at a velocity of a resistance variation such that a surge voltage has a voltage value for which the variable resistive element and the motor are not damaged, and executes drive control of the motor by a normal inverter other than the faulty inverter.
    Type: Application
    Filed: March 27, 2013
    Publication date: March 20, 2014
    Inventors: Shinichi KINOUCHI, Kosuke NAKANO
  • Publication number: 20130343023
    Abstract: In a bond portion between an electrical conductive land and a connection terminal member, an intermetallic compound producing region in which at least a Cu—Sn-based, an M-Sn-based (M indicates Ni and/or Mn), and a Cu-M-Sn-based intermetallic compound are produced is arranged so as to be present at a connection terminal member side. In this intermetallic compound producing region, when a cross section of the bond portion is equally defined into 10 boxes in a longitudinal direction and a lateral direction to define 100 boxes in total, a ratio of the number of boxes in each of which at least two types of intermetallic compounds having different constituent elements are present to the total number of boxes other than boxes in each of which only a Sn-based metal component is present is about 70% or more.
    Type: Application
    Filed: June 18, 2013
    Publication date: December 26, 2013
    Inventors: Hideo NAKAGOSHI, Yoichi TAKAGI, Nobuaki OGAWA, Hidekiyo TAKAOKA, Kosuke NAKANO
  • Publication number: 20130299219
    Abstract: The present invention provides a multilayer circuit board that includes a plurality of resin layers, conductive wiring layers, and via-hole conductors. Each of the resin layers includes a resin sheet containing a resin and a conductive wiring layer disposed on at least one surface of the resin sheet. The via-hole conductors contain an intermetallic compound having a melting point of 300° C. or more produced by a reaction between a first metal composed of Sn or an alloy containing 70% by weight or more Sn and a second metal composed of a Cu—Ni alloy or a Cu—Mn alloy. The second metal has a higher melting point than the first metal.
    Type: Application
    Filed: July 12, 2013
    Publication date: November 14, 2013
    Inventors: Shunsuke Chisaka, Hiroshi Somada, Kosuke Nakano, Noboru Kato
  • Publication number: 20130299236
    Abstract: A method of joining a first metal member having at least a surface made of a first metal to a second metal member having at least a surface made of a second metal with a joining material sandwiched therebetween. The joining material includes a low melting point metal having a lower melting point than the first metal and/or the second metal. The low melting point metal composing the joining material is Sn or an alloy containing Sn. At least one of the first metal and the second metal is a metal or an alloy which forms an intermetallic compound with the low melting point metal, and which has a lattice constant difference of 50% or more from the intermetallic compound. The joining material located between the first metal member and the second metal member is heat-treated at a temperature at which the low melting point metal is melted.
    Type: Application
    Filed: May 29, 2013
    Publication date: November 14, 2013
    Inventors: Kosuke Nakano, Hidekiyo Takaoka
  • Publication number: 20130270001
    Abstract: A connection structure that includes a region where at least a Cu—Sn intermetallic compound, a M-Sn intermetallic compound and a Cu-M-Sn intermetallic compound (where M is Ni and/or Mn) exist in a cross-section of a connecting part when the cross-section of the connecting part is analyzed with a WDX. Further, the connection structure is configured so that when the cross-section of the connecting part is evenly divided into ten sections in a vertical direction and a lateral direction, respectively, to form 100 segmentalized squares in total, a ratio of the number of squares in which two or more kinds of intermetallic compounds having different constituent elements exist to the number of all the squares, except for squares in which only a Sn-based metal component exists, is 70% or more.
    Type: Application
    Filed: June 14, 2013
    Publication date: October 17, 2013
    Inventors: Kosuke Nakano, Hidekiyo Takaoka
  • Publication number: 20130257332
    Abstract: An electric motor driving apparatus having a failure detection circuit includes: a bridge circuit driving an electric motor; a PWM control circuit generating voltage instruction for driving the electric motor; a PWM signal generation circuit generating a PWM signal; a DC current detection circuit detecting DC current of the bridge circuit; a phase current calculation circuit calculating output phase current of the bridge circuit, based on the DC current and PWM signal; and a failure detection circuit detecting failure of the DC current detection circuit. The failure detection circuit determines failure of the DC current detection circuit from the DC current detected values in a zero voltage period in which the high-potential-side arms of the bridge circuit are all ON and in a zero voltage period in which the low-potential-side arms are all ON.
    Type: Application
    Filed: January 10, 2013
    Publication date: October 3, 2013
    Inventors: Kosuke NAKANO, Tetsuya KOJIMA, Satoshi AZUMA, Isao KEZOBO, Ryuichi TAKIGUCHI
  • Publication number: 20130233618
    Abstract: A conductive material that includes a metal component consisting of a first metal and a second metal having a melting point higher than that of the first metal, wherein the first metal is Sn or an alloy containing 70% by weight or more of Sn, and the second metal is a metal or alloy which forms an intermetallic compound having a melting point of 310° C. or higher with the first metal and has a lattice constant difference of 50% or greater between itself and the intermetallic compound generated at the circumference of the second metal.
    Type: Application
    Filed: April 23, 2013
    Publication date: September 12, 2013
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Kosuke Nakano, Hidekiyo Takaoka
  • Publication number: 20130200827
    Abstract: Provided is a motor control device (10) for controlling a motor (5) provided with a plurality of sets of windings, in which, when a current control unit (23) detects a short-circuit failure as a primary failure, the current control unit (23) continues the control, and, further, when the current control unit (23) detects a secondary failure, the current control unit (23) provides control of opening a power supply relay (3). Accordingly, in a case where a failure of a winding of a motor or an inverter occurs, a torque pulsation is restrained and a sufficient output torque is provided, and further, in a case where a secondary failure occurs, excessive heat generation and current consumption are prevented and the cost of the device is reduced.
    Type: Application
    Filed: September 12, 2012
    Publication date: August 8, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Isao KEZOBO, Kosuke NAKANO, Yoshihito ASAO
  • Publication number: 20130194852
    Abstract: In a power converting apparatus having a plurality of phases on an AC side and configured to perform conversion between DC power and AC power, a current detector detects currents flowing through a DC source line through which a plurality of phase currents commonly flow. A control unit sets a current detection period and a succeeding current control period in each successive control cycle. Using first gate signals based on reference gate signals for PWM control, the control unit calculates values of the individual phase currents from the first gate signals and the detected currents during the current detection period. Then, during the current control period, the control unit performs PWM control using phase voltage commands generated by correcting phase voltage target values so as to cancel out voltage errors that occur during the current detection period.
    Type: Application
    Filed: September 12, 2012
    Publication date: August 1, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kosuke NAKANO, Tetsuya KOJIMA