Patents by Inventor Kazuyuki Ito

Kazuyuki Ito 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: 11913190
    Abstract: Provided is a wheel loader capable of reducing erroneous determination of rear wheel lifting. The wheel loader 1 includes a controller 5 for determining a rear wheel lifting state where rear wheels 11B are lifted upwardly. The controller 5 is configured to, when a temporal change rate ? of a bucket operation angle becomes a temporal change rate of a bucket operation angle necessary for a tilt operation of a bucket 23 during an excavation operation and a temporal change rate ? of a vehicle body inclination angle estimated by the controller 5 becomes a temporal change rate of an obliquely upward inclination state of a rear vehicle body with respect to a front vehicle body, turn on a correlation flag indicating a correlation between an operation state of the bucket 23 and an inclination state of a vehicle body to determine a rear wheel lifting.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: February 27, 2024
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Kazuyuki Ito, Yoshikazu Urimoto
  • Publication number: 20240018357
    Abstract: An aromatic polysulfone having one or mom functional groups selected from the group consisting of an acidic group having a pKa equal to or smaller than a pKa of a carboxy group and a salt of the acidic group at a main chain terminal, in which the amount of the functional group, calculated from a peak area ratio in 1H-NMR, is 0.35 to 40 per 100 units of repeating units forming the main chain of the aromatic polysulfone.
    Type: Application
    Filed: December 20, 2021
    Publication date: January 18, 2024
    Inventors: Yurika SUMI, Kazuyuki ITO
  • Patent number: 11807723
    Abstract: A poly(biphenyl ether sulfone) resin substantially comprising a repeating structure of the following formula (1), wherein a polystyrene equivalent mass average molecular weight Mw and a melt viscosity ? at a temperature of 350° C. satisfy formulas (6) and (7), wherein n represents an integer of 1 or more, 60,000?Mw?90,000??(6) 0.0906×Mw?4,930???3,500??(7).
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: November 7, 2023
    Assignee: SUMITOMO CHEMICAL COMPNAY, LIMITED
    Inventor: Kazuyuki Ito
  • Patent number: 11784253
    Abstract: A semiconductor device according to an embodiment includes first and second electrodes, a gate electrode, first to third semiconductor regions, and first and second insulating parts. The first semiconductor region is located on the first electrode. The second semiconductor region is located on the first semiconductor region. The third semiconductor region is located on the second semiconductor region. The first insulating part is arranged with the third semiconductor region, the second semiconductor region, and a portion of the first semiconductor region. The gate electrode is located in the first insulating part. The gate electrode faces the second semiconductor region. The second insulating part is located on the third semiconductor region. The second insulating part is not overlapping the gate electrode. The second insulating part has tensile stress. The second electrode is located on the second insulating part and electrically connected with the third semiconductor region.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: October 10, 2023
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Kazuyuki Ito, Takuo Kikuchi
  • Publication number: 20230220171
    Abstract: The present invention relates to a resin composition containing: an epoxy resin; and an aromatic polysulfone resin containing an amino group-containing aromatic polysulfone having an amino group at at least one terminal of a main chain of a polymer chain, in which a number average molecular weight of the aromatic polysulfone resin is 10,000 or less.
    Type: Application
    Filed: June 18, 2021
    Publication date: July 13, 2023
    Inventor: Kazuyuki ITO
  • Publication number: 20230195070
    Abstract: A process control system 100 includes a plurality of controller devices 10 each of which performs process control on a plant, and an input-output device 20 that is connected to a target device of the process control. The input-output device 20 is installed in a different on-premise environment from the plurality of controller devices 10. Each of the controller devices 10 is connected to the input-output device 20 by a different closed network 40, and transmits and receives information on the process control on the plant to and from the input-output device 20.
    Type: Application
    Filed: December 12, 2022
    Publication date: June 22, 2023
    Applicants: Yokogawa Electric Corporation, NTT Communications Corporation
    Inventors: Yuuzou Hasegawa, Kazuyuki Ito, Masanori Shibayama
  • Patent number: 11643792
    Abstract: Provided is a wheel loader capable of exhibiting sufficient excavation performance while suppressing slip during excavation. A control device provided on a wheel loader according to the present invention is configured to determine a reduction value (?f?) of traveling drive force based on first vehicle body acceleration (av1) of a vehicle body calculated from acceleration detected by an acceleration sensor, second vehicle body acceleration (av2) of the vehicle body calculated from rotational speed of wheels detected by a rotational speed sensor, and thrust (ph) of a hydraulic cylinder detected by a thrust sensor, and reduce the traveling drive force based on the reduction value and output the reduced traveling drive force.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: May 9, 2023
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Kazuyuki Ito, Keisuke Naitou
  • Publication number: 20230098211
    Abstract: Provided is a construction machine capable of improving the accuracy of load weight measurement without reducing the operational efficiency of a working device. A wheel loader 1 as a construction machine comprises a hydraulically driven working device 2 and a controller 5,5A for measuring the weight of a load, wherein the wheel loader 1 includes a changeover switch 121 as a changeover device for switching whether to measure the weight of the load, and in a case where an attitude of the working device 2 satisfies a predetermined load measurement condition, the changeover switch 121 is valid, and pistons 222, 242 are positioned in a first area provided on one end side or in a second area provided on the other end side, the controller 5, 5A limits the command current to be output to lift arm solenoid proportional valves 45 and the bucket solenoid proportional valves 46.
    Type: Application
    Filed: September 16, 2021
    Publication date: March 30, 2023
    Inventor: Kazuyuki ITO
  • Publication number: 20230085666
    Abstract: Provided is a work vehicle capable of reducing the fuel consumption while maintaining the working efficiency. A wheel loader 1 comprising a vehicle body controller 5, 5A for controlling an engine 41, wherein the vehicle body controller 5, 5A limits an upper limit rotational speed of the engine 41 based on an accelerator pedal step-on amount ?, a brake pedal step-on amount ?, a torque converter speed ratio e which is a ratio of a rotational speed of a torque converter 42, a discharge pressure P1 of a loading hydraulic pump 44, and a stroke amount S1 of lift arm cylinders 22 or a stroke amount S2 of a bucket cylinder 24.
    Type: Application
    Filed: September 15, 2021
    Publication date: March 23, 2023
    Inventors: Takuya SHIMOMURA, Masaki YOSHIKAWA, Tetsuji TANAKA, Isamu AOKI, Kazuyuki ITO, Kouji SHIMAZAKI, Keisuke NAITOU
  • Publication number: 20230091870
    Abstract: A semiconductor device includes a first electrode, a second electrode, a semiconductor part located between the first electrode and the second electrode, a third electrode located in the semiconductor part, an insulating film located between the third electrode and the semiconductor part, an insulating member located in the semiconductor part at a position separated from the insulating film, a fourth electrode located in the insulating member, and a compressive stress member located in the fourth electrode. The compressive stress member has compressive stress along a first direction. The first direction is from the first electrode toward the second electrode.
    Type: Application
    Filed: June 7, 2022
    Publication date: March 23, 2023
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Satoshi AKUTSU, Takuo KIKUCHI, Kazuyuki ITO, Nobuhide YAMADA
  • Publication number: 20230086597
    Abstract: An insulating device includes a first element, a second element, a first lead, a second lead, and a resin member. The second element is electrically connected to the first element. The first element is mounted on the first lead. The second lead includes a first surface and a second surface, the second surface being at a side opposite to the first surface. The second element is mounted to the first surface. the second lead is arranged to overlap the first element in a direction crossing the second surface of the second lead. The resin member seals the first element, the second element, the first lead, and the second lead.
    Type: Application
    Filed: July 25, 2022
    Publication date: March 23, 2023
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Satoshi AKUTSU, Kazuyuki ITO, Takuo KIKUCHI, Nobuaki MAKINO, Tatsuya OHGURO, Yoshihiko FUJI
  • Patent number: 11597801
    Abstract: A method for producing an aromatic polysulfone by a polycondensation reaction between an aromatic dihalogenosulfone compound and an aromatic dihydroxy compound is described. The polycondensation reaction is performed in the presence of at least one aromatic end-capping agent; and an amount, p mol, of the aromatic dihalogenosulfone compound, an amount, q mol, of the aromatic dihydroxy compound, and an amount, r mol, of the aromatic end-capping agent have a relationship satisfying formula (S1) below and formula (S2) below: r/(p?q)<2 ??(S1), and p>q ??(S2).
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: March 7, 2023
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Kazuyuki Ito
  • Publication number: 20220365011
    Abstract: An insulating device includes a first electrode, a second electrode, and an insulating film. The insulating film is located between the first electrode and the second electrode. The insulating film includes a positive charged region. The positive charged region is located at a portion in a direction from the first electrode toward the second electrode.
    Type: Application
    Filed: May 13, 2022
    Publication date: November 17, 2022
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Takuo KIKUCHI, Kazuyuki ITO, Satoshi AKUTSU, Nobuaki MAKINO, Tatsuya OHGURO, Yoshihiko FUJI
  • Publication number: 20220367108
    Abstract: An insulating element includes a first coil; a second coil; and an inter-layer insulating film located between the first coil and the second coil. The inter-layer insulating film includes a first layer, a second layer, and a third layer located between the first layer and the second layer. The first layer is located between the first coil and the third layer. The second layer is located between the second coil and the third layer. A bandgap of the third layer is narrower than a bandgap of the first layer and a bandgap of the second layer.
    Type: Application
    Filed: May 12, 2022
    Publication date: November 17, 2022
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Satoshi AKUTSU, Kazuyuki ITO, Takuo KIKUCHI, Nobuaki MAKINO, Tatsuya OHGURO, Yoshihiko FUJI
  • Publication number: 20220308563
    Abstract: A controller is a controller forming, with another controller, a redundant controller. The controller includes a communication function unit that performs communication with an external device capable of executing control calculation needed for process control for a plant, and a redundancy management unit that switches states of the controller between an active state where a result of the control calculation obtained from the external device via the communication function unit is reflected in the process control and a standby state where the result of the control calculation is not reflected in the process control. The redundancy management unit switches the states of the controller to bring one of the controller and the another controller into the active state.
    Type: Application
    Filed: March 7, 2022
    Publication date: September 29, 2022
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Yuuzou Hasegawa, Kazuyuki Ito, Hideharu Yajima
  • Publication number: 20220302304
    Abstract: A semiconductor device according to an embodiment includes first to third semiconductor regions, a structure body, a gate electrode, and a high resistance part. The structure body includes an insulating part and a conductive part. The insulating part is arranged with the third semiconductor region, the second semiconductor region, and a portion of the first semiconductor region. The conductive part is located in the insulating part. The conductive part includes a portion facing the first semiconductor region. The high resistance part is located in the first semiconductor region and has a higher electrical resistance than the first semiconductor region. A plurality of the structure bodies includes first to third structure bodies. The second and third structure bodies are next to the first structure body. The high resistance part overlaps a circle center of an imaginary circle passing through centers of the first to third structure bodies.
    Type: Application
    Filed: December 13, 2021
    Publication date: September 22, 2022
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Takuo KIKUCHI, Kazuyuki ITO, Satoshi AKUTSU
  • Publication number: 20220285553
    Abstract: A semiconductor device according to an embodiment includes first and second electrodes, a gate electrode, first to third semiconductor regions, and first and second insulating parts. The first semiconductor region is located on the first electrode. The second semiconductor region is located on the first semiconductor region. The third semiconductor region is located on the second semiconductor region. The first insulating part is arranged with the third semiconductor region, the second semiconductor region, and a portion of the first semiconductor region. The gate electrode is located in the first insulating part. The gate electrode faces the second semiconductor region. The second insulating part is located on the third semiconductor region. The second insulating part is not overlapping the gate electrode. The second insulating part has tensile stress. The second electrode is located on the second insulating part and electrically connected with the third semiconductor region.
    Type: Application
    Filed: November 12, 2021
    Publication date: September 8, 2022
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Kazuyuki ITO, Takuo KIKUCHI
  • Publication number: 20220251301
    Abstract: The present invention is a polybiphenyl ether sulfone resin substantially composed of a repeating structure of the folio wing Formula (1), and when a test piece with a notch is molded by injection molding the polybiphenyl ether sulfone resin, an Izod impact value of the test piece with a notch after being subjected to heat treatment at 180° C. for 48 hours, measured in accordance with ASTM D256, is 300 J/m or more.
    Type: Application
    Filed: April 1, 2020
    Publication date: August 11, 2022
    Inventors: Kazuyuki ITO, Yuta YOKOZAKI
  • Patent number: 11401695
    Abstract: Provided is a work machine capable of notifying that maintenance is necessary due to continuation of clogging in a cooling device or decrease in cooling performance. A wheel loader 1 including a radiator 31 and an oil cooler 32 comprises a controller 5, 5A configured to determine a clogging continuation state of the radiator 31 or the oil cooler 32. The controller 5, 5A determines whether clogging is occurring in the radiator 31 or the oil cooler 32 based on outside air temperature AW and cooling water temperature CW or hydraulic oil temperature HW, determines whether the clogging continues based on a clogging occurrence ratio R1, R2 while an engine 30 is operating, and outputs a notification command signal for providing the alarm buzzer 61 and the user management system 62 with a command to notify that maintenance is necessary when it is determined that the clogging continues.
    Type: Grant
    Filed: December 25, 2019
    Date of Patent: August 2, 2022
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Koji Hyodo, Masaki Yoshikawa, Kazuyuki Ito, Tetsuji Tanaka, Kouji Shimazaki, Isamu Aoki
  • Patent number: 11390745
    Abstract: An aromatic polysulfone includes an amino group-containing aromatic polysulfone containing a repeating unit represented by the following general formula (A) and having an amino group at a polymer chain end. The aromatic polysulfone has a weight average absolute molecular weight (Mw) of 20,000 g/mol or more and a reduced viscosity (unit: dL/g) of 0.30 or more. -Ph1-SO2-Ph2-O—??(A) In formula (A), Ph1 and Ph2 are each independently a phenylene group which may have a substituent.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: July 19, 2022
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Kazuyuki Ito