Patents by Inventor Tetsuya Yoshikawa

Tetsuya Yoshikawa 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: 12024180
    Abstract: An abnormality determination device is applied to a vehicle provided with a transmission configured to transmit power by rotation of a shaft. The abnormality determination device includes a processor and a memory. The memory configured to store mapping data that is data that defines mapping learned by machine learning. The processor is configured to execute an acquisition process and a determination process. The acquisition process is a process of acquiring a variable indicating a time-series data of a rotation speed of the shaft and using the variable as a value of an input variable of the mapping. The determination process is a process of determining whether an abnormality has occurred in the transmission based on a value of the output variable acquired using the value of the input variable and the mapping.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: July 2, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki Bunazawa, Tetsuya Yoshikawa, Kei Yuasa, Kenichi Yamaguchi
  • Patent number: 11915536
    Abstract: An anomaly determination apparatus for a vehicle that includes a transmission includes an execution device and a memory device. The memory device is configured to store map data that defines pre-trained map, which has been trained through machine learning. When a variable representing time-series data of a rotation speed of a gear is fed to the map as an input variable, the map outputs a state variable representing a state of the gear as an output variable. The execution device is configured to execute: an obtaining process that obtains the variable representing the time-series data as a value of the input variable; and a determination process that determines whether there is an anomaly in the transmission based on a value of the output variable that is output by the map when the value of the input variable is fed to the map.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: February 27, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki Bunazawa, Tetsuya Yoshikawa, Kei Yuasa, Kenichi Yamaguchi
  • Patent number: 11796054
    Abstract: A storage device stores a mapping data entry that specifies a mapping and includes data learned through machine learning. A detection value of an oil temperature sensor is an oil temperature detection value. When oil temperature relation data, which is data corresponding to time series data of the oil temperature detection value, is input to the mapping as an input variable, the mapping outputs an output variable that determines whether a frictional engagement element has an anomaly. Processing circuitry executes an obtainment process that obtains the input variable and an anomaly determination process that determines whether the frictional engagement element has an anomaly based on the output variable that is output from the mapping as a result of inputting the input variable obtained in the obtainment process into the mapping.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: October 24, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki Bunazawa, Tetsuya Yoshikawa, Kei Yuasa, Kenichi Yamaguchi
  • Publication number: 20230229156
    Abstract: The technology disclosed in the present specification is embodied as a support device for supporting maintenance on an apparatus including an expendable component. The support device includes at least one computer. The at least one computer executes: a process of acquiring an index indicative of a consumption level of the expendable component; a process of, at a time point when the index indicative the consumption level reaches a predetermined threshold, specifying a necessary period of time required for replacement of the expendable component at the time point; and a process of restricting an operation of the apparatus when a remaining period of time of the expendable component, the remaining period of time being associated with the threshold, is shorter than the necessary period of time required for the replacement.
    Type: Application
    Filed: October 18, 2022
    Publication date: July 20, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masanori SHIMIZU, Hideto WATANABE, Tetsuo HORI, Hiroyuki TSUKAMOTO, Tetsuya YOSHIKAWA
  • Publication number: 20220044502
    Abstract: An anomaly determination apparatus for a vehicle that includes a transmission includes an execution device and a memory device. The memory device is configured to store map data that defines pre-trained map, which has been trained through machine learning. When a variable representing time-series data of a rotation speed of a gear is fed to the map as an input variable, the map outputs a state variable representing a state of the gear as an output variable. The execution device is configured to execute: an obtaining process that obtains the variable representing the time-series data as a value of the input variable; and a determination process that determines whether there is an anomaly in the transmission based on a value of the output variable that is output by the map when the value of the input variable is fed to the map.
    Type: Application
    Filed: July 12, 2021
    Publication date: February 10, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki BUNAZAWA, Tetsuya YOSHIKAWA, Kei YUASA, Kenichi YAMAGUCHI
  • Publication number: 20220042596
    Abstract: A storage device stores a mapping data entry that specifies a mapping and includes data learned through machine learning. A detection value of an oil temperature sensor is an oil temperature detection value. When oil temperature relation data, which is data corresponding to time series data of the oil temperature detection value, is input to the mapping as an input variable, the mapping outputs an output variable that determines whether a frictional engagement element has an anomaly. Processing circuitry executes an obtainment process that obtains the input variable and an anomaly determination process that determines whether the frictional engagement element has an anomaly based on the output variable that is output from the mapping as a result of inputting the input variable obtained in the obtainment process into the mapping.
    Type: Application
    Filed: June 25, 2021
    Publication date: February 10, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki BUNAZAWA, Tetsuya YOSHIKAWA, Kei YUASA, Kenichi YAMAGUCHI
  • Publication number: 20220041174
    Abstract: An abnormality determination device is applied to a vehicle provided with a transmission configured to transmit power by rotation of a shaft. The abnormality determination device includes a processor and a memory. The memory configured to store mapping data that is data that defines mapping learned by machine learning. The processor is configured to execute an acquisition process and a determination process. The acquisition process is a process of acquiring a variable indicating a time-series data of a rotation speed of the shaft and using the variable as a value of an input variable of the mapping. The determination process is a process of determining whether an abnormality has occurred in the transmission based on a value of the output variable acquired using the value of the input variable and the mapping.
    Type: Application
    Filed: July 21, 2021
    Publication date: February 10, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki BUNAZAWA, Tetsuya YOSHIKAWA, Kei YUASA, Kenichi YAMAGUCHI
  • Publication number: 20220042842
    Abstract: A device for a vehicle including a power transfer device, the power transfer device having an input pulley, an output pulley, and an endless rotary member, the device including: a memory configured to store mapping data that include data that prescribe mapping that represents correspondence between an input variable and an output variable, the data being learned through machine learning, the input variable being at least one of input rotational speed-related data, and output rotational speed-related data, the output variable specifying whether an abnormality is caused in the endless rotary member; and a processor configured to acquire the input variable, acquire the output variable corresponding to the input variable using the mapping data, and determine, based on the output variable, whether an abnormality is caused in the endless rotary member.
    Type: Application
    Filed: July 14, 2021
    Publication date: February 10, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki BUNAZAWA, Tetsuya YOSHIKAWA, Kei YUASA, Kenichi YAMAGUCHI
  • Patent number: 9046444
    Abstract: To effectively suppress a shift of a rotating axis of an upper chuck with respect to a rotating axis of a lower chuck due to a separating force. A tire testing device (1) includes: vertical frames (30a, 30b) which are supported by a lower frame (20); a beam (40) which bridges between the vertical frames (30a, 30b) and is movable in the vertical direction; an upper chuck (45) which is attached to the center of the beam (40), the center corresponding to the center of the beam in the longitudinal direction; and a lower chuck (25) which is attached to the lower frame. When viewed from the vertical direction, a rotating axis of an upper rotating member (47) is positioned at the center of a straight line formed by connecting supporting points where each of the vertical frames (30a, 30b) support the beam (40).
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: June 2, 2015
    Assignee: Kobe Steel, Ltd.
    Inventors: Takehiko Wakazono, Tetsuya Yoshikawa, Glen Thompson, Yasuhiko Fujieda, Shogo Sarumaru
  • Publication number: 20130233066
    Abstract: To effectively suppress a shift of a rotating axis of an upper chuck with respect to a rotating axis of a lower chuck due to a separating force. A tire testing device (1) includes: vertical frames (30a, 30b) which are supported by a lower frame (20); a beam (40) which bridges between the vertical frames (30a, 30b) and is movable in the vertical direction; an upper chuck (45) which is attached to the center of the beam (40), the center corresponding to the center of the beam in the longitudinal direction; and a lower chuck (25) which is attached to the lower frame. When viewed from the vertical direction, a rotating axis of an upper rotating member (47) is positioned at the center of a straight line formed by connecting supporting points where each of the vertical frames (30a, 30b) support the beam (40).
    Type: Application
    Filed: December 13, 2011
    Publication date: September 12, 2013
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Takehiko Wakazono, Tetsuya Yoshikawa, Glen Thompson, Yasuhiko Fujieda, Shogo Sarumaru
  • Patent number: 8342020
    Abstract: A tire testing machine according to the present invention, which can measure both uniformity and dynamic balance of a tire T, comprises a spindle for driving the tire T to rotate about a vertical axis, a spindle housing which supports the spindle rotatably, and a rotating drum rotatable about an axis parallel to an axis of the spindle and movable toward and away from the tire T. The spindle housing is fixed to a base through a piezoelectric sensor so that it can bear a pressing force provided from the rotating drum. The piezoelectric sensor is disposed within a plane including the axis of the spindle and perpendicular to the pressing force. With this structure, dynamic balance of the tire can be measured accurately and easily.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: January 1, 2013
    Assignee: Kobe Steel, Ltd.
    Inventors: Yu Sumimoto, Koichi Honke, Masao Murakami, Tetsuya Yoshikawa, Toshikatsu Nonaka
  • Patent number: 8136393
    Abstract: Provided is a tire testing machine capable of measuring a force generated in a tire with high precision. The tire testing machine includes a spindle shaft (20) for holding a tire (T), a housing (22) for rotatably supporting the spindle shaft (20) through a rolling bearing (25), a running device (10) having a surface rotated by rotational driving and imparting a rotational force to a tire contacting the surface, and a measurement device (4) which is provided in the housing (22) and measures a force and moment generated in the spindle shaft (20) when the tire (T) is running. Furthermore, the tire testing machine includes a torque canceller (5) for preventing the spindle shaft (20) from such an impact that rotational friction torque (My1) generated by rotational friction, which is received by the spindle shaft (20) in the housing when the spindle shaft (20) rotates, is imparted onto the shaft (20).
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: March 20, 2012
    Assignee: Kobe Steel, Ltd.
    Inventors: Tetsuya Yoshikawa, Yasuhiko Fujieda
  • Publication number: 20110000292
    Abstract: Provided is a tire testing machine capable of measuring a force generated in a tire with high precision. The tire testing machine includes a spindle shaft (20) for holding a tire (T), a housing (22) for rotatably supporting the spindle shaft (20) through a rolling bearing (25), a running device (10) having a surface rotated by rotational driving and imparting a rotational force to a tire contacting the surface, and a measurement device (4) which is provided in the housing (22) and measures a force and moment generated in the spindle shaft (20) when the tire (T) is running. Furthermore, the tire testing machine includes a torque canceller (5) for preventing the spindle shaft (20) from such an impact that rotational friction torque (My1) generated by rotational friction, which is received by the spindle shaft (20) in the housing when the spindle shaft (20) rotates, is imparted onto the shaft (20).
    Type: Application
    Filed: February 24, 2009
    Publication date: January 6, 2011
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Tetsuya Yoshikawa, Yasuhiko Fujieda
  • Publication number: 20090308156
    Abstract: A tire testing machine according to the present invention, which can measure both uniformity and dynamic balance of a tire T, comprises a spindle for driving the tire T to rotate about a vertical axis, a spindle housing which supports the spindle rotatably, and a rotating drum rotatable about an axis parallel to an axis of the spindle and movable toward and away from the tire T. The spindle housing is fixed to a base through a piezoelectric sensor so that it can bear a pressing force provided from the rotating drum. The piezoelectric sensor is disposed within a plane including the axis of the spindle and perpendicular to the pressing force. With this structure, dynamic balance of the tire can be measured accurately and easily.
    Type: Application
    Filed: April 30, 2009
    Publication date: December 17, 2009
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Yu Sumimoto, Koichi Honke, Masao Murakami, Tetsuya Yoshikawa, Toshikatsu Nonaka
  • Patent number: 7520938
    Abstract: An object is subjected to high-pressure processing by bringing at least a high-pressure fluid into contact with the object under pressure in a high-pressure processing chamber, and then the high-pressure processing chamber is depressurized while the temperature in the chamber is controlled to be maintained above a temperature achieved by an adiabatic expansion, the adiabatic expansion starting from the pressure and temperature at the end of the high-pressure processing step. To control in such a way, the temperature in the high-pressure processing chamber is controlled so as to suppress or recover a temperature descent caused by an adiabatic expansion during the depressurizing step. This solves a problem in which the temperature is decreased to the vapor-liquid phase coexistence region or a region in which a solid is deposited.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: April 21, 2009
    Assignee: Kobe Steel, Ltd.
    Inventors: Yoshihiko Sakashita, Takahiko Ishii, Masahiro Yamagata, Tetsuya Yoshikawa
  • Patent number: 7513265
    Abstract: Disclosed is a high pressure processing method for subjecting a processing object to a high pressure processing using a high pressure fluid. In this method, the high pressure fluid is brought into collision with the surface of the processing object placed in a high pressure processing chamber, and then distributed along the surface of the processing object in an outward direction beyond the processing object.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: April 7, 2009
    Assignees: Kabushiki Kaisha Kobe Seiko Sho, Dainippon Screen Mfg. Co., Ltd.
    Inventors: Tetsuya Yoshikawa, Yoichi Inoue, Katsumi Watanabe, Kaoru Masuda, Katsuyuki Iijima, Tomomi Iwata, Yusuke Muraoka, Kimitsugu Saito, Ikuo Mizobata
  • Patent number: 7335596
    Abstract: Cu-based interconnections are fabricated in a semiconductor device by depositing a thin film of Cu or Cu alloy on a dielectric film by sputtering, the dielectric film having trenches and/or via holes at least one groove and being arranged on or above a substrate, and carrying out high temperature and high pressure treatment to thereby embed the Cu or Cu alloy into the trenches and/or via holes, in which the sputtering is carried out at a substrate temperature of ?20° C. to 0° C. using, as a sputtering gas, a gaseous mixture containing hydrogen gas and an inert gas in a ratio in percentage of 5:95 to 20:80.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: February 26, 2008
    Assignee: Kobe Steel, Ltd.
    Inventors: Takashi Onishi, Tatsuya Yasunaga, Hideo Fujii, Tetsuya Yoshikawa, Jun Munemasa
  • Patent number: 7220714
    Abstract: A process for removing residues from the microstructure of an object is provided, which comprises steps of preparing a remover including carbon dioxide, an additive for removing the residues and a co-solvent dissolving the additive in said carbon dioxide at a pressurized fluid condition; and bringing the object into contact with the remover so as to remove the residues from the object. A composition for removing residues from the microstructure of an object is also provided.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: May 22, 2007
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Kaoru Masuda, Katsuyuki Iijima, Tetsuya Yoshikawa, Darry W. Peters
  • Publication number: 20060019496
    Abstract: Cu-based interconnections are fabricated in a semiconductor device by depositing a thin film of Cu or Cu alloy on a dielectric film by sputtering, the dielectric film having trenches and/or via holes at least one groove and being arranged on or above a substrate, and carrying out high temperature and high pressure treatment to thereby embed the Cu or Cu alloy into the trenches and/or via holes, in which the sputtering is carried out at a substrate temperature of ?20° C. to 0° C. using, as a sputtering gas, a gaseous mixture containing hydrogen gas and an inert gas in a ratio in percentage of 5:95 to 20:80.
    Type: Application
    Filed: June 22, 2005
    Publication date: January 26, 2006
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel,Ltd.)
    Inventors: Takashi Onishi, Tatsuya Yasunaga, Hideo Fujii, Tetsuya Yoshikawa, Jun Munemasa
  • Patent number: 6916735
    Abstract: A temporary support layer 2 is formed on a semiconductor substrate 1, and the temporary support layer 2 is provided with a hole 4 that reaches the semiconductor substrate 1. The hole 4 is filled in with a conductor material 5, and by pressurizing the conductor material 5, the conductor material 5 and the semiconductor substrate 1 are pressure-bonded. Thereby, an aerial wiring structure whose bonding strength is improved and that has excellent self-sustainability can be obtained.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: July 12, 2005
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Takao Fujikawa, Tetsuya Yoshikawa