Patents by Inventor Hiroyoshi Sawada

Hiroyoshi Sawada 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).

  • Patent number: 11922677
    Abstract: An information processing apparatus (10) according to the present disclosure includes: an object recognition unit (11) that outputs, by using a first modal signal and a first modal recognition model corresponding to the first modal signal, an inference result regarding the first modal signal; a training data processing unit (12) that generates first modal training data regarding the first modal signal by using the inference result, and updates second modal training data regarding a second modal signal that is different from the first modal signal by using the first modal training data; and a recognition model update unit (13) that updates a second modal recognition model corresponding to the second modal signal by using the second modal training data.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: March 5, 2024
    Assignee: NEC CORPORATION
    Inventors: Hiroyoshi Miyano, Masato Toda, Azusa Sawada, Takashi Shibata
  • Patent number: 11333687
    Abstract: A sensor unit includes a bus bar and a magneto-electric conversion device. The bus bar connects a plurality of switch elements constituting a part of a power conversion circuit and a motor. The magneto-electric conversion device is disposed to face a middle portion of the bus bar across a clearance in a predetermined direction to detect a magnetic field caused by an electric current flowing through the bus bar, to thereby detects the electric current. The bus bar includes a first end and a second end. The first end of the bus bar is connected to one of a switch terminal extending from the switch elements and a motor terminal extending from the motor, and the second end of the bus bas is connected to the other of the switch terminal and the motor terminal.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: May 17, 2022
    Assignee: DENSO CORPORATION
    Inventors: Yuuki Suzuki, Hiroyoshi Sawada, Kazuharu Tochikawa
  • Patent number: 11252845
    Abstract: A power conversion device includes an electronic component, a cooler, a housing, protruding pipes, and annular seal members. Each of the seal members includes a seal body portion interposed between a corresponding one of the protruding pipes and the housing, and a flange portion extending outward from the seal body portion in a radial direction and contacting an outer surface of the housing from an axial direction. The housing includes a peripheral wall surface formed to surround the flange portion from an outer peripheral side, and an annular groove portion formed along an outer peripheral edge of the flange portion inside the peripheral wall surface. The peripheral wall surface is formed to extend outward, in the axial direction, from an axial contact surface of the housing contacted by the flange portion.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: February 15, 2022
    Assignee: DENSO CORPORATION
    Inventors: Tomoya Miura, Kenshiro Hida, Hiroyoshi Sawada
  • Publication number: 20200400721
    Abstract: A sensor unit includes a bus bar and a magneto-electric conversion device. The bus bar connects a plurality of switch elements constituting a part of a power conversion circuit and a motor. The magneto-electric conversion device is disposed to face a middle portion of the bus bar across a clearance in a predetermined direction to detect a magnetic field caused by an electric current flowing through the bus bar, to thereby detects the electric current. The bus bar includes a first end and a second end. The first end of the bus bar is connected to one of a switch terminal extending from the switch elements and a motor terminal extending from the motor, and the second end of the bus bas is connected to the other of the switch terminal and the motor terminal.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 24, 2020
    Applicant: DENSO CORPORATION
    Inventors: Yuuki SUZUKI, Hiroyoshi SAWADA, Kazuharu TOCHIKAWA
  • Publication number: 20200245496
    Abstract: A power conversion device includes an electronic component, a cooler, a housing, protruding pipes, and annular seal members. Each of the seal members includes a seal body portion interposed between a corresponding one of the protruding pipes and the housing, and a flange portion extending outward from the seal body portion in a radial direction and contacting an outer surface of the housing from an axial direction. The housing includes a peripheral wall surface formed to surround the flange portion from an outer peripheral side, and an annular groove portion formed along an outer peripheral edge of the flange portion inside the peripheral wall surface. The peripheral wall surface is formed to extend outward, in the axial direction, from an axial contact surface of the housing contacted by the flange portion.
    Type: Application
    Filed: April 17, 2020
    Publication date: July 30, 2020
    Applicant: DENSO CORPORATION
    Inventors: Tomoya MIURA, Kenshiro HIDA, Hiroyoshi SAWADA
  • Patent number: 9461451
    Abstract: A power converter is equipped with a semiconductor module stack, a positive bus bar stack, and a negative bus bar stack. The positive bus bar stack has a first positive bus bar and a second positive bus bar stacked. The negative bus bar stack also has a first negative bus bar and a second negative bus bar stacked in a stacking direction Z of the positive bus bar stack. The first semiconductor modules of the semiconductor module stack are connected to the first positive bus bar and the first negative bus bar, while the second semiconductor modules of the semiconductor module stack are connected to the second positive bus bar and the second negative bus bar. This results in a decreased variation in mutual inductance among the semiconductor modules, which leads to a decrease in overall inductance of the power converter.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: October 4, 2016
    Assignee: DENSO CORPORATION
    Inventors: Hiroyoshi Sawada, Makoto Okamura
  • Patent number: 9306445
    Abstract: The power conversion apparatus includes a power module constituting a switching circuit, a capacitor electrically connected to the power module, and a pair of DC bus bars for transferring electric power to and from the pair of the DC bus bars. The pair of the DC bus bars includes a bus bar extension section which is located along a surface of the capacitor at least at part of a portion thereof constituting a current path between the power module and the capacitor.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: April 5, 2016
    Assignee: DENSO CORPORATION
    Inventors: Hiroyoshi Sawada, Makoto Okamura
  • Patent number: 9007795
    Abstract: The power conversion device includes a plurality of semiconductor modules, each having a main body section including a switching element therein. In a module unit, a positive module and a negative module are disposed such that main surfaces of the respective main body sections oppose each other. A positive terminal, a first intermediate terminal, a negative terminal, and a second intermediate terminal project in a Z direction perpendicular to X direction in which the positive module and the negative module oppose each other. A first vector V1 from the positive terminal towards the first intermediate terminal and a second vector V2 from the second intermediate terminal towards the negative terminal are configured such that these vector components V12 and V22 in a Y direction perpendicular to both the X and Z directions are opposite to each other.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: April 14, 2015
    Assignee: Denso Corporation
    Inventors: Tetsuya Matsuoka, Hiroyoshi Sawada, Makoto Okamura, Hiroshi Inamura, Yasuaki Aoki
  • Publication number: 20140355221
    Abstract: A power converter is equipped with a semiconductor module stack, a positive bus bar stack, and a negative bus bar stack. The positive bus bar stack has a first positive bus bar and a second positive bus bar stacked. The negative bus bar stack also has a first negative bus bar and a second negative bus bar stacked in a stacking direction Z of the positive bus bar stack. The first semiconductor modules of the semiconductor module stack are connected to the first positive bus bar and the first negative bus bar, while the second semiconductor modules of the semiconductor module stack are connected to the second positive bus bar and the second negative bus bar. This results in a decreased variation in mutual inductance among the semiconductor modules, which leads to a decrease in overall inductance of the power converter.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 4, 2014
    Applicant: DENSO CORPORATION
    Inventors: Hiroyoshi SAWADA, Makoto Okamura
  • Publication number: 20130272046
    Abstract: The power conversion device includes a plurality of semiconductor modules, each having a main body section including a switching element therein. In a module unit, a positive module and a negative module are disposed such that main surfaces of the respective main body sections oppose each other. A positive terminal, a first intermediate terminal, a negative terminal, and a second intermediate terminal project in a Z direction perpendicular to X direction in which the positive module and the negative module oppose each other. A first vector V1 from the positive terminal towards the first intermediate terminal and a second vector V2 from the second intermediate terminal towards the negative terminal are configured such that these vector components V12 and V22 in a Y direction perpendicular are opposite to each other.
    Type: Application
    Filed: March 18, 2013
    Publication date: October 17, 2013
    Applicant: DENSO CORPORATION
    Inventors: Tetsuya MATSUOKA, Hiroyoshi SAWADA, Makoto OKAMURA, Hiroshi INAMURA, Yasuaki AOKI
  • Publication number: 20130264891
    Abstract: The power conversion apparatus includes a power module constituting a switching circuit, a capacitor electrically connected to the power module, and a pair of DC bus bars for transferring electric power to and from the pair of the DC bus bars. The pair of the DC bus bars includes a bus bar extension section which is located along a surface of the capacitor at least at part of a portion thereof constituting a current path between the power module and the capacitor.
    Type: Application
    Filed: March 18, 2013
    Publication date: October 10, 2013
    Applicant: DENSO CORPORATION
    Inventors: Hiroyoshi SAWADA, Makoto OKAMURA
  • Publication number: 20010010806
    Abstract: A deodorizing apparatus for shoes, said deodorizing apparatus for shoes comprises a pair of leg portions which are to be inserted into the shoes, a joining portion which joins upper ends of the pair of leg portions at a predetermined interval, ozone generating ultraviolet lamps which are respectively received in the pair of leg portions, and a power supply which drives the ultraviolet lamps to light up, wherein each of the leg portions is formed with an ozone emitting portion for emitting ozone generated by the corresponding ultraviolet lamp, and/or an ultraviolet radiation emitting portion for emitting ultraviolet radiation of a wavelength having an ozone generating action as has been generated by the corresponding ultraviolet lamp.
    Type: Application
    Filed: January 29, 2001
    Publication date: August 2, 2001
    Inventors: Toshio Kanazawa, Satoshi Watanabe, Hiroyoshi Sawada, Yasuhiro Tomita