Patents by Inventor Hiroshi Fujiwara

Hiroshi Fujiwara 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: 20190241063
    Abstract: A working machine body includes a machine body having a front and a rear opposite to the front in a front-rear direction and an engine mounted in the machine body. A selective catalytic reduction catalyst is provided in the machine body and connected to the machine body and connected to the engine. A urea aqueous solution tank is to store a urea aqueous solution. The urea aqueous solution tank is connected to the selective catalytic reduction catalyst and provided in the machine body between the engine and the front of the machine body in the front-rear direction.
    Type: Application
    Filed: April 18, 2019
    Publication date: August 8, 2019
    Applicant: Kubota Corporation
    Inventors: Keigo HONDA, Hiroaki NAKAGAWA, Daisuke SAKURAI, Hiroshi FUJIWARA
  • Publication number: 20190207549
    Abstract: A motor control device is configured to feedback-control state quantity of a motor or a mechanical load, and the device includes a first notch filter disposed inside a feedback control system and configured to change a frequency component to be removed, a first notch controller configured to change a first notch frequency as a center frequency of the first notch filter, a change rate calculator configured to successively calculate a notch frequency change rate indicating a change amount per unit time of the first notch frequency, and a change rate monitor configured to output a signal indicating that the notch frequency change rate has a value outside a first predetermined range when the notch frequency change rate has the value outside the first predetermined range.
    Type: Application
    Filed: July 28, 2017
    Publication date: July 4, 2019
    Inventors: HIROSHI FUJIWARA, TORU TAZAWA, FUMITAKE SAEGUSA
  • Publication number: 20190199267
    Abstract: The invention provides a motor control device configured to feedback-control state quantity of a motor or a load, the device including a first notch filter disposed inside a feedback control system and configured to change a frequency component to be removed, a first notch controller configured to change a first notch frequency as a center frequency of the first notch filter, and a change forecaster configured to calculate to output, in accordance with the first notch frequency at each of a plurality of past times, at least one of a forecast value of the notch frequency at a specific future time, a forecast value of elapsed time from current time until the notch frequency is to become out of a specific frequency range, and a forecast value of time when the notch frequency is to become out of the specific frequency range.
    Type: Application
    Filed: July 26, 2017
    Publication date: June 27, 2019
    Inventors: HIROSHI FUJIWARA, TORU TAZAWA, FUMITAKE SAEGUSA
  • Publication number: 20190184150
    Abstract: An adapter set that is attached to artery-side and vein-side shunt connectors-that are provided on a blood circuit. The adapter set includes: an artery-side adapter that has one end thereof connected to the artery-side shunt connector, has the other end thereof connected to a drainage port that is provided on the outside of the blood circuit, and thereby connects the artery-side shunt connector and the drainage port fluid tight; and a vein-side adapter that has one end thereof connected to the vein-side shunt connector, has the other end thereof connected to a supply port that is provided on the outside of the blood circuit, and thereby connects the vein-side shunt connector and the supply port fluid tight. The structure of the other end of the artery-side adapter and the structure of the other end of the vein-side adapter are different.
    Type: Application
    Filed: August 7, 2017
    Publication date: June 20, 2019
    Applicant: NIKKISO CO., LTD.
    Inventors: Hiroshi NIMURA, Yoshimichi MASUDA, Masato FUJIWARA
  • Patent number: 10325695
    Abstract: A rectangular wire having: a multilayer conductor member constructed by stacking, in a thickness direction, a rectangular metallic conductor that has a layer of a first thermoplastic resin formed on the outer periphery thereof, the first thermoplastic resin being a non-crystalline resin having no melting point or a crystalline resin having an amide bond; and a layer of a second thermoplastic resin having a melting point of 300° C. or more on the outer periphery of the multilayer conductor member.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: June 18, 2019
    Assignees: Furukawa Electric Co., Ltd., Furukawa Magnet Wire Co., Ltd.
    Inventors: Hideo Fukuda, Dai Fujiwara, Tsuneo Aoi, Hiroshi Kaneiwa, Takefumi Kaji
  • Patent number: 10319491
    Abstract: A rectangular wire having: a multilayer conductor member constructed by stacking, in a thickness direction, a rectangular metallic conductor that has a layer of a thermosetting resin formed on the outer periphery thereof, the thermosetting resin having a glass transition temperature of 100° C. or more and 200° C. or less and having a urethane bond; and a layer of a thermoplastic resin having a melting point of 300° C. or more on the outer periphery of the multilayer conductor member.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: June 11, 2019
    Assignees: Furukawa Electric Co., Ltd., Furukawa Magnet Wire Co., Ltd.
    Inventors: Hideo Fukuda, Dai Fujiwara, Tsuneo Aoi, Hiroshi Kaneiwa, Yuki Amano
  • Patent number: 10308108
    Abstract: A machine body has a front-rear direction and a right-left direction perpendicular to the front-rear direction. The machine body has right and left sides in the right-left direction. A cabin is mounted in the machine body between the right and left sides. Right and left traveling devices are arranged respectively on the right and left sides of the machine body. A boom has a front end part in the front-rear direction to be connected to a working tool. A first wall is provided on one side of the boom in the right-left direction. A second wall is provided on another side opposite to the one side with respect to the boom in the right-left direction. A urea aqueous solution tank is provided between the first and second walls to store a urea aqueous solution.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: June 4, 2019
    Assignee: KUBOTA CORPORATION
    Inventors: Keigo Honda, Hiroaki Nakagawa, Daisuke Sakurai, Hiroshi Fujiwara
  • Publication number: 20190146453
    Abstract: A method, according to the present invention, of adjusting control parameters used in a control apparatus of an electric motor includes the steps of: computing a first frequency characteristic (Step 1); computing a present speed-proportional gain range (Step 2); computing a present mechanical-system characteristic constant (Step 3); computing a present proportional gain range (Step 4); computing a secular characteristic (Step 5); computing a secular speed-proportional gain range (Step 6); computing a secular proportional gain range (Step 7); and selecting proportional gain values (Step 8).
    Type: Application
    Filed: December 20, 2018
    Publication date: May 16, 2019
    Inventors: Toru TAZAWA, Hiroshi FUJIWARA, Masaru NISHIZONO
  • Publication number: 20190145019
    Abstract: In an exemplary embodiment, a quartz glass crucible 1 includes: a cylindrical crucible body 10 which has a bottom and is made of quartz glass; and a first crystallization-accelerator-containing coating film 13A which is formed on an inner surface 10a so as to cause an inner crystal layer composed of an aggregate of dome-shaped or columnar crystal grains to be formed on a surface-layer portion of the inner surface 10a of the crucible body 10 by heating during a step of pulling up the silicon single crystal by a Czochralski method. The quartz glass crucible is capable of withstanding a single crystal pull-up step undertaken for a very long period of time.
    Type: Application
    Filed: August 24, 2017
    Publication date: May 16, 2019
    Inventors: Hiroshi KISHI, Kouta HASEBE, Takahiro ABE, Hideki FUJIWARA
  • Publication number: 20190121313
    Abstract: In a motor control system, a plurality of motor control devices for controlling motors and a controller are connected to each other via a communication line. The controller generates a communication signal including an operation command, and transmits the communication signal to the respective motor control devices in a predetermined communication cycle. The plurality of motor control devices includes two motor control devices in a first group and a motor control device in a second group. Each of the motor control devices in the first group includes a data transceiver, a motor controller, a corrector, and a synchronous timing generator. The data transceiver receives an operation command issued to the motor control device, and receives operation information in the motor control device in the second group. Based on the operation command, the motor controller generates a torque command signal for controlling the motor.
    Type: Application
    Filed: April 24, 2017
    Publication date: April 25, 2019
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: MITSUTAKA OKURA, AKINOBU TOMITA, HIROSHI FUJIWARA, YOSHIAKI IKEUCHI
  • Publication number: 20190106036
    Abstract: A foam molding article includes an outer-shell-configuring part, an insert that is at least partially embedded in the outer-shell-configuring part, and a fitting member. The outer-shell-configuring part includes a body side foam member. The body side foam member includes a foam and a missing part where a part of the foam is missing. The missing part is located in an intermediate part of the body side foam member, and the fitting member is mounted in the missing part.
    Type: Application
    Filed: December 5, 2018
    Publication date: April 11, 2019
    Applicant: KANEKA CORPORATION
    Inventor: Hiroshi Fujiwara
  • Patent number: 10236620
    Abstract: A seal ring mounting portion has: an outer circumferential surface portion that is provided so as to come into close contact with an inner circumferential portion of a seal ring, and extends along a circumferential direction of the seal ring in a state of being in close contact with the inner circumferential portion of the seal ring; and a holding portion that has a first wall portion provided on one width-direction side of the outer circumferential surface portion and a second wall portion provided on another width-direction side of the outer circumferential surface portion, the holding portion sandwiching and holding the seal ring from two sides in a width direction of the seal ring by the first wall portion and the second wall portion in the state of the seal ring being in close contact with the outer circumferential surface portion.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: March 19, 2019
    Assignee: J.S.T. MFG. CO., LTD.
    Inventors: Hironori Kono, Ryuji Kawaguchi, Seiji Yabuki, Hiroshi Fujiwara
  • Patent number: 10197986
    Abstract: A method, according to the present invention, of adjusting control parameters used in a control apparatus of an electric motor includes the steps of: computing a first frequency characteristic (Step 1); computing a present speed-proportional gain range (Step 2); computing a present mechanical-system characteristic constant (Step 3); computing a present proportional gain range (Step 4); computing a secular characteristic (Step 5); computing a secular speed-proportional gain range (Step 6); computing a secular proportional gain range (Step 7); and selecting proportional gain values (Step 8).
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: February 5, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Toru Tazawa, Hiroshi Fujiwara, Masaru Nishizono
  • Publication number: 20180275628
    Abstract: A method, according to the present invention, of adjusting control parameters used in a control apparatus of an electric motor includes the steps of: computing a first frequency characteristic (Step 1); computing a present speed-proportional gain range (Step 2); computing a present mechanical-system characteristic constant (Step 3); computing a present proportional gain range (Step 4); computing a secular characteristic (Step 5); computing a secular speed-proportional gain range (Step 6); computing a secular proportional gain range (Step 7); and selecting proportional gain values (Step 8).
    Type: Application
    Filed: May 25, 2018
    Publication date: September 27, 2018
    Inventors: Toru Tazawa, Hiroshi Fujiwara, Masaru Nishizono
  • Patent number: 10007249
    Abstract: A method, according to the present invention, of adjusting control parameters used in a control apparatus of an electric motor includes the steps of: computing a first frequency characteristic (Step 1); computing a present speed-proportional gain range (Step 2); computing a present mechanical-system characteristic constant (Step 3); computing a present proportional gain range (Step 4); computing a secular characteristic (Step 5); computing a secular speed-proportional gain range (Step 6); computing a secular proportional gain range (Step 7); and selecting proportional gain values (Step 8).
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: June 26, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Toru Tazawa, Hiroshi Fujiwara, Masaru Nishizono
  • Patent number: 9975433
    Abstract: An electric vehicle controller includes an inverter that drives a motor by receiving power supplied from an overhead line, a brake chopper circuit that includes a switching device and a braking resistor and is connected in parallel with the inverter, a voltage detector that detects a bus voltage applied to DC buses, and a control unit that performs power consumption control of causing the braking resistor to consume regenerative power supplied from the motor and overvoltage suppression control of suppressing the bus voltage from being excessive. The control unit controls the switching device such that a second duty ratio used at the time of performing the overvoltage suppression control is lower than a first duty ratio used at the time of performing the power consumption control.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: May 22, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hiroshi Fujiwara, Yuri Yamamoto, Yu Hirayama
  • Publication number: 20180062303
    Abstract: A seal ring mounting portion has: an outer circumferential surface portion that is provided so as to come into close contact with an inner circumferential portion of a seal ring, and extends along a circumferential direction of the seal ring in a state of being in close contact with the inner circumferential portion of the seal ring; and a holding portion that has a first wail portion provided on one width-direction side of the outer circumferential surface portion and a second wall portion provided on another width-direction side of the outer circumferential surface portion, the holding portion sandwiching and holding the seal ring from two sides in a width direction of the seal ring by the first wall portion and the second wall portion in the state of the seal ring being in close contact with the outer circumferential surface portion.
    Type: Application
    Filed: August 2, 2017
    Publication date: March 1, 2018
    Applicant: J.S.T. Mfg. Co., Ltd.
    Inventors: Hironori KONO, Ryuji KAWAGUCHI, Seiji YABUKI, Hiroshi FUJIWARA
  • Publication number: 20170232847
    Abstract: An electric vehicle controller includes an inverter that drives a motor by receiving power supplied from an overhead line, a brake chopper circuit that includes a switching device and a braking resistor and is connected in parallel with the inverter, a voltage detector that detects a bus voltage applied to DC buses, and a control unit that performs power consumption control of causing the braking resistor to consume regenerative power supplied from the motor and overvoltage suppression control of suppressing the bus voltage from being excessive. The control unit controls the switching device such that a second duty ratio used at the time of performing the overvoltage suppression control is lower than a first duty ratio used at the time of performing the power consumption control.
    Type: Application
    Filed: August 25, 2014
    Publication date: August 17, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroshi FUJIWARA, Yuri YAMAMOTO, Yu HIRAYAMA
  • Patent number: 9525378
    Abstract: A motor control device of the present invention includes a position detector (107), a feedforward controller, a predistorter, a feedback controller, a vibration suppression controller, a torque controller, a torque estimator, and an adjustment calculator. The vibration suppression controller receives a manipulation-quantity command value derived by addition of a feedforward manipulation quantity and a feedback manipulation quantity, and outputs an actual manipulation-quantity command value corresponding to the received manipulation-quantity command value. The torque controller controls a manipulation quantity generated by the motor so that the manipulation quantity matches the actual manipulation-quantity command value. The adjustment calculator adjusts a transfer characteristic of the predistorter such that the transfer characteristic becomes equal to a transfer characteristic from the manipulation-quantity command value to the manipulation quantity.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: December 20, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Hiroshi Fujiwara
  • Publication number: 20160344326
    Abstract: A motor control device of the present invention includes a position detector (107), a feedforward controller, a predistorter, a feedback controller, a vibration suppression controller, a torque controller, a torque estimator, and an adjustment calculator. The vibration suppression controller receives a manipulation-quantity command value derived by addition of a feedforward manipulation quantity and a feedback manipulation quantity, and outputs an actual manipulation-quantity command value corresponding to the received manipulation-quantity command value. The torque controller controls a manipulation quantity generated by the motor so that the manipulation quantity matches the actual manipulation-quantity command value. The adjustment calculator adjusts a transfer characteristic of the predistorter such that the transfer characteristic becomes equal to a transfer characteristic from the manipulation-quantity command value to the manipulation quantity.
    Type: Application
    Filed: July 3, 2014
    Publication date: November 24, 2016
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: HIROSHI FUJIWARA