Patents by Inventor Hitoshi Takayama

Hitoshi Takayama 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: 20240146025
    Abstract: A method of manufacturing a vertical-cavity surface-emitting laser element includes: providing a nitride semiconductor layer including an n-side semiconductor layer, an active layer, and a p-side semiconductor layer in this order; covering at least a first portion of a surface of the p-side semiconductor layer with a mask member while a second portion of the surface of the p-side semiconductor layer is not covered with the mask member; forming an oxide film on the second portion of the surface of the p-side semiconductor layer and the mask member; heat-treating the nitride semiconductor layer and the oxide film; removing the oxide film and the mask member after the heat-treating of the nitride semiconductor layer and the oxide film; and forming an electrode extending over the first portion and the second portion of the surface of the p-side semiconductor layer.
    Type: Application
    Filed: October 30, 2023
    Publication date: May 2, 2024
    Inventors: Kenichi TERAO, Hitoshi TAKAYAMA
  • Publication number: 20240131582
    Abstract: A green compact conveying mechanism includes: a conveyance path for a green compact obtained by compressively forming powder in a sheet shape; an extrusion part that sends the green compact to the downstream side of the conveyance path by extruding the green compact; and a buckling inducing part that is arranged in the conveyance path, causes the green compact to be easily bent locally, and induces buckling at that site.
    Type: Application
    Filed: January 18, 2022
    Publication date: April 25, 2024
    Inventors: Rikiya OKIMOTO, Yosuke TAKAYAMA, Hitoshi TANI
  • Patent number: 11840310
    Abstract: A human-powered vehicle control device for a human-powered vehicle includes an electronic controller that controls an electric brake device and a component of the human-powered vehicle that differs from the electric brake device. The electric brake device and the component are supplied with electric power from a common battery. The electronic controller gives actuation priority to the electric brake device over the component.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: December 12, 2023
    Assignee: Shimano Inc.
    Inventor: Hitoshi Takayama
  • Patent number: 11787500
    Abstract: A control device for a human-powered vehicle including a motor that applies a propulsion force to the human-powered vehicle, a crank axle, a driving wheel, and a transmission that automatically changes a transmission ratio of a rotational speed of the driving wheel to a rotational speed of the crank axle in accordance with a travel state of the human-powered vehicle. The control device includes an electronic controller that controls the motor in accordance with a human driving force input to the crank axle. The controller changes an assist state related to at least one of an assist ratio of an assist force by the motor to a predetermined human driving force and the assist force by the motor in accordance with the human driving force and controls the transmission to maintain the transmission ratio upon determining a parameter related to the human driving force satisfies a predetermined condition.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: October 17, 2023
    Assignee: Shimano Inc.
    Inventors: Satoshi Shahana, Hitoshi Takayama
  • Publication number: 20230294790
    Abstract: A brake device is provided to a human-powered vehicle. The brake device includes an input body, a brake, and a power converter. A driving force is input to the input body. The brake is configured to contact a rotational body of the human-powered vehicle. The power converter is configured to convert a rotational force of the input body to a force that moves the brake toward the rotational body. The power converter includes a transmission configured to change a ratio of a movement amount of the brake to an output rotational speed of the input body.
    Type: Application
    Filed: February 24, 2023
    Publication date: September 21, 2023
    Inventors: Yasuhiro NAKASHIMA, Kiichiro NAGATA, Hitoshi TAKAYAMA
  • Publication number: 20230278660
    Abstract: A human-powered vehicle control device includes a controller configured to control a motor that assists propulsion of a human-powered vehicle including a movable member that is extensible and retractable. The controller controls the motor in accordance with actuation of the movable member during an extending or retracting action of the movable member.
    Type: Application
    Filed: May 15, 2023
    Publication date: September 7, 2023
    Inventor: Hitoshi Takayama
  • Publication number: 20230249776
    Abstract: A human-powered vehicle control device controls the transmission that changes the transmission ratio of a human-powered vehicle. The control device includes an electronic controller that switches between a first control state for controlling the transmission to change the transmission ratio in accordance with a first prescribed set of conditions, and a second control state for controlling the transmission to suppress the change of the transmission ratio as compared with if the electronic controller is in the first control state, in accordance with at least one of a steering state of the human-powered vehicle, a surface condition of a travel path on which the human-powered vehicle travels, and a pedaling preparation state related to the pedals of the human-powered vehicle.
    Type: Application
    Filed: April 13, 2023
    Publication date: August 10, 2023
    Inventors: Satoshi SHAHANA, Nobukatsu HARA, Hitoshi TAKAYAMA
  • Patent number: 11702167
    Abstract: A human-powered vehicle control device controls the transmission to initiate a shifting operation based on a set of prescribed conditions that changes the transmission ratio of a human-powered vehicle. The control device includes an electronic controller that switches between a first control state for controlling the transmission to change the transmission ratio in accordance with a first prescribed set of conditions, and a second control state for controlling the transmission to prevent the change of the transmission ratio as compared with if the electronic controller is in the first control state. The electronic controller switches between the first control state and the second control state in accordance with a detection of at least one of a steering state of the human-powered vehicle, a surface condition of a travel path on which the human-powered vehicle travels, and a pedaling preparation state related to the pedals of the human-powered vehicle.
    Type: Grant
    Filed: April 8, 2021
    Date of Patent: July 18, 2023
    Assignee: Shimano Inc.
    Inventors: Satoshi Shahana, Nobukatsu Hara, Hitoshi Takayama
  • Publication number: 20230202606
    Abstract: A control device is provided to a human-powered vehicle. The control device includes an electronic controller. The electronic controller is configured to control an air pressure of a tire provided to the human-powered vehicle, based on at least one of a roughness of a road surface on which the human-powered vehicle is traveling or will travel, a slope state related to an advancing direction of the human-powered vehicle, a wet state of a road surface, a traveling state of the human-powered vehicle, and a state of a component mounted on the human-powered vehicle.
    Type: Application
    Filed: December 21, 2022
    Publication date: June 29, 2023
    Inventors: Satoshi SHAHANA, Akinobu SUGIMOTO, Akira INOUE, Hitoshi TAKAYAMA
  • Patent number: 11685466
    Abstract: A human-powered vehicle control device includes a controller configured to control a motor that assists propulsion of a human-powered vehicle including a movable member that is extensible and retractable. The controller controls the motor in accordance with actuation of the movable member during an extending or retracting action of the movable member.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: June 27, 2023
    Assignee: Shimano Inc.
    Inventor: Hitoshi Takayama
  • Publication number: 20230192230
    Abstract: An electronic device is provided to a human-powered vehicle. The electronic device basically includes an electronic controller. The electronic controller is configured to selectively operate in an operational state that includes a first operational state and a second operational state. The second operational state consumes more electric power than the first operational state. The electronic controller is configured to switch the operational state between the first operational state and the second operational state in accordance with a rotational amount of a rotational body included in a transmission path of a human driving force in the human-powered vehicle.
    Type: Application
    Filed: December 6, 2022
    Publication date: June 22, 2023
    Inventors: Ryota YAMAGUCHI, Hitoshi TAKAYAMA
  • Publication number: 20230159135
    Abstract: A motorized component of a human-powered vehicle includes an electric actuator and controller circuitry configured to control the electric actuator. At least one of the electric actuator and the controller circuitry is configured to be electrically connected via an electric cable to a remotely located power source configured to supply electricity to an assist drive unit configured to assist pedaling. The motorized component is other than a rear derailleur.
    Type: Application
    Filed: November 24, 2022
    Publication date: May 25, 2023
    Applicant: SHIMANO INC.
    Inventors: Yuki SAKAGAWA, Toyoto SHIRAI, Satoshi SHAHANA, Hitoshi TAKAYAMA, Noor Ashyikkin BINTI MOHD NOOR
  • Publication number: 20230089903
    Abstract: An electrical device for a system of a human-powered vehicle comprises a controller. The controller is configured to selectively act, based on reference information relating to the system, as each of a master controller and a slave controller. The master controller is configured to transmit a first control signal to a different slave controller of a different electrical device of the system. The different slave controller is configured to be operated in response to the first control signal. The slave controller is configured to be operated in response to a second control signal transmitted from a different master controller of a different electrical device of the system.
    Type: Application
    Filed: September 21, 2021
    Publication date: March 23, 2023
    Applicant: SHIMANO INC.
    Inventors: Yuki SAKAGAWA, Toyoto SHIRAI, Noor Ashyikkin BINTI MOHD NOOR, Akihiro NOZAKI, Satoshi SHAHANA, Hitoshi TAKAYAMA
  • Patent number: 11521117
    Abstract: A control data creation device is provided that has an acquisition part, a creation part and an evaluation part. The acquisition part acquires input information concerning traveling of a human-powered vehicle. The creation part creates by a learning algorithm a learning model that outputs output information concerning control of a component of the human-powered vehicle based on input information acquired by the acquisition part. The evaluation part evaluates output information output from the learning model. The creation part updates the learning model based on training data including an evaluation by the evaluation part, input information corresponding to an output of the output information and the output information.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: December 6, 2022
    Assignee: Shimano Inc.
    Inventors: Hayato Shimazu, Hitoshi Takayama, Satoshi Shahana, Takehiko Nakajima
  • Patent number: 11407472
    Abstract: A human-powered vehicle control device includes an electronic controller configured to control an electric component of a human-powered vehicle including a crank and a drive wheel. The electronic controller is configured to control the electric component so as to change at least one of a first ratio of a rotational speed of the drive wheel to a rotational speed of the crank and a second ratio of a drive force assisting propulsion of the human-powered vehicle to the human drive force upon determining a human drive force input to the crank shifts from a first range to outside the first range. The electronic controller is configured to change the first range in accordance with at least one of a state of a rider and a running state of the human-powered vehicle.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: August 9, 2022
    Assignee: Shimano Inc.
    Inventors: Satoshi Shahana, Hitoshi Takayama, Yasuho Hommoto
  • Publication number: 20220204127
    Abstract: A control device is provided for a human-powered vehicle. The control device includes an electronic controller that is configured to control a motor that assists in propulsion of the human-powered vehicle. The electronic controller is configured to control the motor in accordance with a pitch angle of the human-powered vehicle and information related to a user load applied by a user to the human-powered vehicle in a negative direction with respect to a propulsion direction of the human-powered vehicle.
    Type: Application
    Filed: September 21, 2021
    Publication date: June 30, 2022
    Inventors: Satoshi SHAHANA, Akira INOUE, Akinobu SUGIMOTO, Atsuhiro EMURA, Nobukatsu HARA, Hitoshi TAKAYAMA, Shingo SAKURAI
  • Publication number: 20220204129
    Abstract: A control device for a human-powered vehicle has an electronic controller that controls a motor that applies a propulsion force to the human-powered vehicle to assist a human driving force. The human-powered vehicle includes a transmission device. The electronic controller is configured to assist in propulsion of the human-powered vehicle with the motor in a state in which the human-powered vehicle is propelled by the human driving force. In a case where a transmission ratio of the transmission device is changed, the electronic controller decreases an assist level of the motor in accordance with the human driving force input to the human-powered vehicle, and controls the motor so that the assist level is greater for a case where the human driving force is a first human driving force than the assist level for a case where the human driving force is less than the first human driving force.
    Type: Application
    Filed: December 10, 2021
    Publication date: June 30, 2022
    Inventors: Satoshi SHAHANA, Hitoshi TAKAYAMA
  • Patent number: 11345433
    Abstract: A brake control device includes an electronic controller that is configured to control a braking unit that is configured to brake at least one of a plurality of rotating bodies of a human-powered vehicle. The electronic controller is configured to control the braking unit upon determining an ABS control is performed to decrease a braking force of a first rotating body included in the plurality of rotating bodies so that a braking force of a second rotating body, which is different from the first rotating body and included in the plurality of rotating bodies, is increased by a force that is different from hydraulic pressure.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: May 31, 2022
    Assignee: Shimano Inc.
    Inventors: Hitoshi Takayama, Masahiko Fukuda, Toshihiko Takahashi, Daisuke Nago, Masahiro Nakakura, Takafumi Nishino, Takehiko Nakajima
  • Publication number: 20220135176
    Abstract: A human-powered vehicle control device for a human-powered vehicle comprises an electronic controller. The electronic controller is configured to control a motor, which applies a propulsion force to the human-powered vehicle, in accordance with a human driving force input to the human-powered vehicle. The electronic controller is configured to control the motor to change at least one of a maximum value of an output of the motor, a first changing ratio of an increase rate of the output of the motor to an increase rate of the human driving force, and a second changing ratio of a decrease rate of the output of the motor to a decrease rate of the human driving force in accordance with transmission information related to a transmission ratio in a power transmission path between an input rotational shaft of the human-powered vehicle and a wheel of the human-powered vehicle.
    Type: Application
    Filed: October 20, 2021
    Publication date: May 5, 2022
    Inventors: Satoshi SHAHANA, Hitoshi TAKAYAMA
  • Patent number: 11319022
    Abstract: A transmission control system is configured to be used with a human-powered vehicle that includes a crank, a first rotation body rotated independently from the crank, a drive wheel, a second rotation body rotated independently from the drive wheel, a transfer body that transfers rotation force between the first and second rotation bodies, and a transmission that controls the transfer body and shifts a transmission ratio. The transmission control system includes a motor that drives the transfer body, a first detector that detects at least one of acceleration and vibration of the human-powered vehicle, and an electronic controller configured to control the motor in accordance with a detection result of the first detector upon generation of a shift request for the transmission in a state in which the drive wheel is rotated and a rotational angle of the crank is maintained in a predetermined range.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: May 3, 2022
    Assignee: Shimano Inc.
    Inventors: Satoshi Shahana, Nobukatsu Hara, Hitoshi Takayama