Patents by Inventor Kazuki KUMAGAI

Kazuki KUMAGAI 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: 20240087996
    Abstract: A semiconductor device includes a semiconductor element and a first connection member. The semiconductor element includes a substrate and an electrode pad. The substrate includes a transistor formation region, in which a transistor is formed and which is shaped to be non-quadrangular. The electrode pad is located on the transistor formation region. The first connection member is connected to the electrode pad at one location. The electrode pad is arranged to cover a center of gravity of the transistor formation region in a plan view of the electrode pad. In the plan view, a connection region in which the first connection member is connected to the electrode pad includes a center of gravity position of the transistor formation region.
    Type: Application
    Filed: November 15, 2023
    Publication date: March 14, 2024
    Inventors: Kazuki OKUYAMA, Shuntaro TAKAHASHI, Motoharu HAGA, Shingo YOSHIDA, Kazuhisa KUMAGAI, Hajime OKUDA
  • Patent number: 10844996
    Abstract: A display device includes a display unit having a panel-shape, a stand supporting the display unit, an adjusting mechanism being attached to the display unit and enabling the display unit to move up and down relative to the stand and turn around the stand, a first fastening member fastening the adjusting mechanism to the stand, and a regulating mechanism regulating the display unit from descending relative to the stand when the first fastening member is removed. The regulating mechanism includes a projection being formed on one of the stand and the adjusting mechanism, and a recess being formed in the other of the stand and the adjusting mechanism and being fitted onto the projection.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: November 24, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuichi Hasegawa, Shinya Ishida, Kazuki Kumagai
  • Patent number: 10554845
    Abstract: An engine output control unit of a work vehicle is configured to set a target rotation speed of an engine by using an engine output torque curve, to control an output of the engine. The engine output control unit is configured to control the output of the engine so as to set torque to be higher than torque at an actual rotation speed obtained using the engine output torque curve. Typically, when the actual rotation speed of the engine becomes smaller than the target rotation speed, the engine output control unit sets an engine output torque curve that is greater in torque at the actual rotation speed than the engine output torque curve, and switches control of the output of the engine from control performed using the engine output torque curve to control performed using the engine output torque curve.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: February 4, 2020
    Assignee: KOMATSU LTD.
    Inventors: Koji Ohigashi, Kimihiro Mori, Kazuki Kumagai
  • Publication number: 20190309894
    Abstract: A display device includes a display unit having a panel-shape, a stand supporting the display unit, an adjusting mechanism being attached to the display unit and enabling the display unit to move up and down relative to the stand and turn around the stand, a first fastening member fastening the adjusting mechanism to the stand, and a regulating mechanism regulating the display unit from descending relative to the stand when the first fastening member is removed. The regulating mechanism includes a projection being formed on one of the stand and the adjusting mechanism, and a recess being formed in the other of the stand and the adjusting mechanism and being fitted onto the projection.
    Type: Application
    Filed: December 22, 2017
    Publication date: October 10, 2019
    Inventors: YUICHI HASEGAWA, SHINYA ISHIDA, KAZUKI KUMAGAI
  • Patent number: 10358798
    Abstract: A work vehicle detects pressure of hydraulic oil supplied to an arm cylinder. The work vehicle determines operation details for an arm. The work vehicle includes a relief valve capable of setting a relief pressure of hydraulic oil in a hydraulic circuit at one of a first set pressure and a second set pressure that is greater than the first set pressure. The work vehicle sets the relief pressure of the relief valve at the first set pressure, on the conditions that the detected pressure is equal to or greater than a predetermined value, and that it is determined that the operation details indicate an excavation operation. The work vehicle sets the relief pressure of the relief valve at the second set pressure when the conditions are not satisfied.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: July 23, 2019
    Assignee: KOMATSU LTD.
    Inventors: Koji Ohigashi, Kimihiro Mori, Kazuki Kumagai
  • Publication number: 20180338059
    Abstract: An engine output control unit of a work vehicle is configured to set a target rotation speed of an engine by using an engine output torque curve, to control an output of the engine. The engine output control unit is configured to control the output of the engine so as to set torque to be higher than torque at an actual rotation speed obtained using the engine output torque curve. Typically, when the actual rotation speed of the engine becomes smaller than the target rotation speed, the engine output control unit sets an engine output torque curve that is greater in torque at the actual rotation speed than the engine output torque curve, and switches control of the output of the engine from control performed using the engine output torque curve to control performed using the engine output torque curve.
    Type: Application
    Filed: January 20, 2016
    Publication date: November 22, 2018
    Applicant: KOMATSU LTD.
    Inventors: Koji OHIGASHI, Kimihiro MORI, Kazuki KUMAGAI
  • Publication number: 20180030691
    Abstract: A work vehicle detects pressure of hydraulic oil supplied to an arm cylinder. The work vehicle determines operation details for an arm. The work vehicle includes a relief valve capable of setting a relief pressure of hydraulic oil in a hydraulic circuit at one of a first set pressure and a second set pressure that is greater than the first set pressure. The work vehicle sets the relief pressure of the relief valve at the first set pressure, on the conditions that the detected pressure is equal to or greater than a predetermined value, and that it is determined that the operation details indicate an excavation operation. The work vehicle sets the relief pressure of the relief valve at the second set pressure when the conditions are not satisfied.
    Type: Application
    Filed: February 8, 2016
    Publication date: February 1, 2018
    Applicant: KOMATSU LTD.
    Inventors: Koji OHIGASHI, Kimihiro MORI, Kazuki KUMAGAI