Patents by Inventor Hiroyoshi Kobayashi

Hiroyoshi Kobayashi 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: 11275105
    Abstract: A test device according to an embodiment of the present invention includes: a first measurement terminal connected to one end of a first coil to be tested; a second measurement terminal connected to another end of the first coil; a direct-current power source connected to the first measurement terminal; a first semiconductor switch connected between the second measurement terminal and a ground; and a drive unit for turning on and off the first semiconductor switch.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: March 15, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Yasunori Tanahashi, Hiroyoshi Kobayashi
  • Patent number: 11141190
    Abstract: A medical overtube device has a main body formed by articulating a plurality of nested units into a first group of nested units and a second group of nested units and is bendable in a longitudinal direction thereof; a first shape-fixation mechanism configured to fix a shape of the first group which has a first wire, both end of the first wire coupled to the first group of nested units and a first pulley configured to be wound by the first wire; and a second shape-fixation mechanism configured to fix a shape of the second group which has a second wire, both end of the second wire coupled to the second group of nested units; and a second pulley configured to be wound by the second wire, wherein the first shape-fixation mechanism is configured to release the fixed shape of the first group independently from the second shape-fixation mechanism.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: October 12, 2021
    Assignee: OLYMPUS CORPORATION
    Inventors: Takeshi Murata, Hiroyoshi Kobayashi
  • Publication number: 20210022723
    Abstract: A surgical system includes: an overtube including a channel into which an endoscope is inserted; and an expansion device configured to ensure a surgical space by expanding an interior of a body at a distal side relative to a tip of the overtube. The expansion device includes a sheath and a wire configured to be protrudable from the sheath. The wire is configured to be switchable between a first configuration in which the wire protrudes from the sheath and a second configuration in which the wire protrudes from the sheath in a state where the wire is tilted, around a longitudinal axis, at an angle different from the first configuration.
    Type: Application
    Filed: October 13, 2020
    Publication date: January 28, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Jun WAKASONE, Hiroyoshi KOBAYASHI, Takeshi MURATA, Shotaro TAKEMOTO
  • Patent number: 10820870
    Abstract: According to one embodiment, an X-ray diagnostic apparatus includes an X-ray tube, a driver, a supporter, and processing circuitry. The X-ray tube including a rotating anode. The driver rotates the rotating anode. The supporter supports the X-ray tube in an inclinable manner. The processing circuitry acquires information indicating an attitude of the supporter and controls the driver based on information indicating the acquired attitude.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: November 3, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Daisuke Sato, Katsuo Takahashi, Kansei Takahashi, Hiroyoshi Kobayashi, Akio Tetsuka, Akira Mochizuki, Katsunori Kojima, Yuki Totsuka, Masaharu Soya, Ikuo Hayashida
  • Patent number: 10762257
    Abstract: An equivalent circuit is capable of, while having a simple configuration, accurately expressing a superposition characteristic and having excellent practicality and workability. A current sensor and a voltage source are connected in series between external terminals of an equivalent circuit. A reference state element having an impedance forms a closed loop with a current source. A current flowing through the equivalent circuit and detected by the current sensor is reproduced by the current source and then applied to the reference state element, so that a potential difference is generated across the reference state element. A voltage obtained by multiplying the potential difference by a correction coefficient is outputted by the voltage source. By setting the correction coefficient to be dependent on the current or an inter-terminal voltage, the impedance represented by the equivalent circuit can be reproduced as a characteristic dependent on the current I or the inter-terminal voltage.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: September 1, 2020
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Hiroyoshi Kobayashi, Shin Itakura, Azusa Tomita
  • Patent number: 10638998
    Abstract: An X-ray diagnostic apparatus comprises an X-ray tube and processing circuitry. The X-ray tube includes a rotary anode. The processing circuitry is configured to derive an acquiring condition from a fluoroscopic image, and start to increase, in accordance with the acquiring condition derived, a rotating speed of the anode from a low rotating speed to a high rotating speed before the X-ray tube finishes emitting an X-ray to acquire the fluoroscopic image.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: May 5, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Yuki Totsuka, Masaharu Soya, Katsuo Takahashi, Kansei Takahashi, Akira Mochiduki, Katsunori Kojima, Daisuke Sato, Hisayuki Uehara, Hiroyoshi Kobayashi, Akio Tetsuka
  • Publication number: 20200124657
    Abstract: A test device according to an embodiment of the present invention includes: a first measurement terminal connected to one end of a first coil to be tested; a second measurement terminal connected to another end of the first coil; a direct-current power source connected to the first measurement terminal; a first semiconductor switch connected between the second measurement terminal and a ground; and a drive unit for turning on and off the first semiconductor switch.
    Type: Application
    Filed: October 4, 2019
    Publication date: April 23, 2020
    Inventors: Yasunori TANAHASHI, Hiroyoshi KOBAYASHI
  • Publication number: 20200100813
    Abstract: A medical overtube device has a main body formed by articulating a plurality of nested units into a first group of nested units and a second group of nested units and is bendable in a longitudinal direction thereof; a first shape-fixation mechanism configured to fix a shape of the first group which has a first wire, both end of the first wire coupled to the first group of nested units and a first pulley configured to be wound by the first wire; and a second shape-fixation mechanism configured to fix a shape of the second group which has a second wire, both end of the second wire coupled to the second group of nested units; and a second pulley configured to be wound by the second wire, wherein the first shape-fixation mechanism is configured to release the fixed shape of the first group independently from the second shape-fixation mechanism.
    Type: Application
    Filed: December 2, 2019
    Publication date: April 2, 2020
    Applicant: OLYMPUS CORPORATION
    Inventors: Takeshi MURATA, Hiroyoshi KOBAYASHI
  • Patent number: 10607978
    Abstract: A semiconductor device, including a first semiconductor chip including a first substrate having a semiconductor larger in bandgap than silicon, the first semiconductor chip being formed with a first FET including a first gate electrode, a first source, and a first drain, a second semiconductor chip including a second substrate having a semiconductor larger in bandgap than silicon, the second semiconductor chip being formed with a second FET having a second gate electrode, a second source, and a second drain, and a third semiconductor chip including a third substrate having silicon, the third semiconductor chip being formed with a MOSFET including a third gate electrode, a third source, and a third drain. The first semiconductor chip and the second semiconductor chip are mounted over a first chip mounting section, and the third semiconductor chip is mounted over a second chip mounting section.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: March 31, 2020
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Satoru Akiyama, Hiroyoshi Kobayashi, Hisao Inomata, Sei Saitou
  • Patent number: 10597110
    Abstract: A vehicle body includes a vehicle body frame and a steering rotation unit that is supported on the vehicle body frame and that rotates about a steering axis. The vehicle includes a variable trail length mechanism. The variable trail length mechanism varies a trail length of a front wheel and includes an oscillation unit and a torsion reduction portion. The oscillation unit is connected with the steering rotation unit so as to be oscillatable in a fore-aft direction and supports the front wheel. The torsion reduction portion reduces torsion of the oscillation unit in a vehicle width direction through the oscillation unit combined with the steering rotation unit under a condition in which the trail length is changed such that the front wheel is disposed at a rearmost position.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: March 24, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Makoto Araki, Hiroyoshi Kobayashi, Tsubasa Nose
  • Publication number: 20190099142
    Abstract: According to one embodiment, an X-ray diagnostic apparatus includes an X-ray tube, a driver, a supporter, and processing circuitry. The X-ray tube including a rotating anode. The driver rotates the rotating anode. The supporter supports the X-ray tube in an inclinable manner. The processing circuitry acquires information indicating an attitude of the supporter and controls the driver based on information indicating the acquired attitude.
    Type: Application
    Filed: September 27, 2018
    Publication date: April 4, 2019
    Applicant: Canon Medical Systems Corporation
    Inventors: Daisuke SATO, Katsuo Takahashi, Kansei Takahashi, Hiroyoshi Kobayashi, Akio Tetsuka, Akira Mochizuki, Katsunori Kojima, Yuki Totsuka, Masaharu Soya, Ikuo Hayashida
  • Publication number: 20180276328
    Abstract: An equivalent circuit is capable of, while having a simple configuration, accurately expressing a superposition characteristic and having excellent practicality and workability. A current sensor and a voltage source are connected in series between external terminals of an equivalent circuit. A reference state element having an impedance forms a closed loop with a current source. A current flowing through the equivalent circuit and detected by the current sensor is reproduced by the current source and then applied to the reference state element, so that a potential difference is generated across the reference state element. A voltage obtained by multiplying the potential difference by a correction coefficient is outputted by the voltage source. By setting the correction coefficient to be dependent on the current or an inter-terminal voltage, the impedance represented by the equivalent circuit can be reproduced as a characteristic dependent on the current I or the inter-terminal voltage.
    Type: Application
    Filed: March 6, 2018
    Publication date: September 27, 2018
    Inventors: Hiroyoshi KOBAYASHI, Shin ITAKURA, Azusa TOMITA
  • Patent number: 10016213
    Abstract: A mantle tube including a bendable member, which is formed in such a way as to be received in an elongate, annular, cylindrical member, includes two fixed sites that are fixed to the cylindrical member and a bendable site that is interposed between these fixed sites and bendable in a direction intersecting a longitudinal direction thereof, an angle adjustment member that is capable of adjusting a bending angle of the bendable site, and an angle holding mechanism that is capable of holding, at any desired bending angle, the bendable site bent by the angle adjustment member.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: July 10, 2018
    Assignee: OLYMPUS CORPORATION
    Inventors: Hiroyoshi Kobayashi, Takami Shibazaki
  • Publication number: 20180178875
    Abstract: A vehicle body includes a vehicle body frame and a steering rotation unit that is supported on the vehicle body frame and that rotates about a steering axis. The vehicle includes a variable trail length mechanism. The variable trail length mechanism varies a trail length of a front wheel and includes an oscillation unit and a torsion reduction portion. The oscillation unit is connected with the steering rotation unit so as to be oscillatable in a fore-aft direction and supports the front wheel. The torsion reduction portion reduces torsion of the oscillation unit in a vehicle width direction through the oscillation unit combined with the steering rotation unit under a condition in which the trail length is changed such that the front wheel is disposed at a rearmost position.
    Type: Application
    Filed: December 19, 2017
    Publication date: June 28, 2018
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Makoto ARAKI, Hiroyoshi KOBAYASHI, Tsubasa NOSE
  • Publication number: 20180166430
    Abstract: A semiconductor device, including a first semiconductor chip including a first substrate having a semiconductor larger in bandgap than silicon, the first semiconductor chip being formed with a first FET including a first gate electrode, a first source, and a first drain, a second semiconductor chip including a second substrate having a semiconductor larger in bandgap than silicon, the second semiconductor chip being formed with a second FET having a second gate electrode, a second source, and a second drain, and a third semiconductor chip including a third substrate having silicon, the third semiconductor chip being formed with a MOSFET including a third gate electrode, a third source, and a third drain. The first semiconductor chip and the second semiconductor chip are mounted over a first chip mounting section, and the third semiconductor chip is mounted over a second chip mounting section.
    Type: Application
    Filed: February 12, 2018
    Publication date: June 14, 2018
    Inventors: Satoru AKIYAMA, Hiroyoshi KOBAYASHI, Hisao INOMATA, Sei SAITOU
  • Patent number: 9962186
    Abstract: A trocar including a distal-end tube portion that is disposed inside the body and has a first inner hole through which a medical device can be inserted; a proximal-end tube portion that is disposed outside the body and is connected to the distal-end tube portion, the proximal-end tube portion having a second inner hole that communicates with the first inner hole and has an axis which can be disposed in a direction not parallel to an axis of the first inner hole; and a movement facilitating portion that is disposed on at least one of the inner surface of the first inner hole and the inner surface of the second inner hole to facilitate the movement of the medical device inside the inner hole.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: May 8, 2018
    Assignee: OLYMPUS CORPORATION
    Inventors: Satoru Kikuchi, Hiromu Ikeda, Yasuhiro Miyazaki, Hiroyoshi Kobayashi, Masafumi Haraguchi
  • Patent number: 9960153
    Abstract: The manufacturing yield of a semiconductor device is improved. There is provided a semiconductor device of a cascode coupling system, which is equipped with a plurality of normally-on junction FETs using as a material, a substance larger in bandgap than silicon, and a normally-off MOSFET using silicon as a material. At this time, the semiconductor chip has a plurality of junction FET semiconductor chips (semiconductor chip CHP0 and semiconductor chip CHP1) formed with the junction FETs in a divided fashion, and a MOSFET semiconductor chip (semiconductor chip CHP2) formed with the MOSFET.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: May 1, 2018
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Satoru Akiyama, Hiroyoshi Kobayashi, Hisao Inomata, Sei Saitou
  • Publication number: 20180096088
    Abstract: In a capacitor equivalent circuit model for when a DC voltage is superimposed on a signal, using an equivalent circuit for when the DC voltage is not applied as a baseline, a voltage-controlled current source or voltage source that adjusts the signal in accordance with the superimposed DC voltage is substituted with a portion that represents the capacitance of the equivalent circuit. The voltage-controlled current source or voltage source is then modeled using a current or voltage approximation formula that describes the change in the signal resulting from the changes in the characteristics of the capacitor due to superimposition of the DC voltage, and a device that represents the capacitance of the equivalent circuit behaves similar to a variable device due to superimposition of the DC voltage. This approximation formula reduces computational load on a simulator and prevents issues such as divergence.
    Type: Application
    Filed: September 28, 2017
    Publication date: April 5, 2018
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Shin ITAKURA, Hiroyoshi KOBAYASHI, Masayuki SHIMIZU
  • Patent number: 9917078
    Abstract: The manufacturing yield of a semiconductor device is improved. There is provided a semiconductor device of a cascode coupling system, which is equipped with a plurality of normally-on junction FETs using as a material, a substance larger in bandgap than silicon, and a normally-off MOSFET using silicon as a material. At this time, the semiconductor chip has a plurality of junction FET semiconductor chips (semiconductor chip CHP0 and semiconductor chip CHP1) formed with the junction FETs in a divided fashion, and a MOSFET semiconductor chip (semiconductor chip CHP2) formed with the MOSFET.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: March 13, 2018
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Satoru Akiyama, Hiroyoshi Kobayashi, Hisao Inomata, Sei Saitou
  • Publication number: 20170352518
    Abstract: An X-ray diagnostic apparatus comprises an X-ray tube and processing circuitry. The X-ray tube includes a rotary anode. The processing circuitry is configured to derive an acquiring condition from a fluoroscopic image, and start to increase, in accordance with the acquiring condition derived, a rotating speed of the anode from a low rotating speed to a high rotating speed before the X-ray tube finishes emitting an X-ray to acquire the fluoroscopic image.
    Type: Application
    Filed: June 7, 2017
    Publication date: December 7, 2017
    Applicant: Toshiba Medical Systems Corporation
    Inventors: Yuki TOTSUKA, Masaharu SOYA, Katsuo TAKAHASHI, Kansei TAKAHASHI, Akira MOCHIDUKl, Katsunori KOJIMA, Daisuke SATO, Hisayuki UEHARA, Hiroyoshi KOBAYASHI, Akio TETSUKA