Patents by Inventor Koichiro Hashimoto

Koichiro Hashimoto 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: 20210370222
    Abstract: To provide a hydrogen gas supply device with which pressure resistance of a filter that catches sulfur components contained in a hydrogen gas is improved. A hydrogen gas supply device for a hydrogen station includes a compression portion that compresses a hydrogen gas by reciprocating motion of a piston, in which a piston ring containing sulfur components is mounted on the piston, a filter arranged on the downstream side of the compression portion, the filter that catches sulfur components contained in the hydrogen gas, and a first pipe connecting the compression portion and the filter. The filter includes an element portion having activated carbon onto which the sulfur components contained in the hydrogen gas are absorbable, and a steel housing portion that houses the element portion, in which a gas introduction passage that communicates with the first pipe and guides the hydrogen gas to the element portion is formed.
    Type: Application
    Filed: March 12, 2021
    Publication date: December 2, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Naofumi KANEI, Daisuke WADA, Koichiro HASHIMOTO
  • Patent number: 11085429
    Abstract: A compression device (1) includes compression portions, a suction line, connection lines, a discharge line, and display portions (d) configured to display pressure values, pressure gauges (PG1 to PG6) provided for at least one of the suction line, the connection lines, and the discharge line and a housing (40). The housing (40) includes a peripheral wall (42) and a door (44). The pressure gauges (PG1 to PG6) are situated at positions to face the door (44).
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: August 10, 2021
    Assignee: Kobe Steel, Ltd.
    Inventors: Koichiro Hashimoto, Naofumi Kanei, Takuya Washio, Daisuke Wada, Ryosuke Mori
  • Patent number: 11035520
    Abstract: A method for controlling a compression system that includes a compressor for compressing gas, a first on-off valve provided on a suction flow passage connected to a suction side of the compressor, a pressure reducing valve provided on a portion of the suction flow passage upstream of the first on-off valve, a second on-off valve provided on a discharge flow passage connected to a discharge side of the compressor, a bypass flow passage connecting the suction flow passage and the discharge flow passage to detour the compressor, and a bypass valve provided on the bypass flow passage, includes closing the first on-off valve while driving the compressor, opening the bypass valve simultaneously with or after the closing of the first on-off valve, closing the second on-off valve after the opening of the bypass valve, and continuing to drive the compressor after the closing of the second on-off valve.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: June 15, 2021
    Assignee: Kobe Steel, Ltd.
    Inventors: Koichiro Hashimoto, Masashi Takano, Takuro Uba, Takayuki Fukuda, Kenji Nagura
  • Patent number: 11028839
    Abstract: The present application includes a compressor having a cylinder forming a compression chamber in which gas is compressed, a housing having a peripheral wall forming an internal space in which the compressor is stored, and a supporting member situated above the compressor in the internal space. The peripheral wall includes an opening wall in which a carry-out port is formed through which the cylinder is carried out. The supporting member extends to guide movement of a first lifting device between a position above the compressor and a position above the carry-out port. The cylinder is hung from the first lifting device.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: June 8, 2021
    Assignee: Kobe Steel, Ltd.
    Inventors: Koichiro Hashimoto, Kenji Nagura, Takuya Washio, Ryosuke Mori, Daisuke Wada
  • Publication number: 20210164618
    Abstract: A method for controlling a compression system that includes a compressor for compressing gas, a first on-off valve provided on a suction flow passage connected to a suction side of the compressor, a pressure reducing valve provided on a portion of the suction flow passage upstream of the first on-off valve, a second on-off valve provided on a discharge flow passage connected to a discharge side of the compressor, a bypass flow passage connecting the suction flow passage and the discharge flow passage to detour the compressor, and a bypass valve provided on the bypass flow passage, includes closing the first on-off valve while driving the compressor, opening the bypass valve simultaneously with or after the closing of the first on-off valve, closing the second on-off valve after the opening of the bypass valve, and continuing to drive the compressor after the closing of the second on-off valve.
    Type: Application
    Filed: October 14, 2020
    Publication date: June 3, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Koichiro HASHIMOTO, Masashi TAKANO, Takuro UBA, Takayuki FUKUDA, Kenji NAGURA
  • Patent number: 11015589
    Abstract: A gas supplying apparatus includes a compressor, a housing having an exhaust port, and an exhaust duct. The housing has a circumferential wall and a top wall. The circumferential wall has an access section. The exhaust port is provided on at least one of the circumferential wall and the top wall at a location higher than the access section. The exhaust duct includes a discharge port for discharging the air, exhausted from the exhaust port, to the outside. The discharge port is opened upward or opened downward in an area overlapping the top wall in an up-and-down direction.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: May 25, 2021
    Assignee: Kobe Steel, Ltd.
    Inventors: Takuya Washio, Koichiro Hashimoto, Daisuke Wada, Kenji Nagura, Akitoshi Fujisawa
  • Patent number: 10879692
    Abstract: There is a need to provide a semiconductor device and an electronic control system including the same while the semiconductor device is capable of continuing normal operation even when a negative surge voltage is applied. According to an embodiment, a driver IC includes an output transistor, a driver control circuit, a negative potential clamp circuit, and an ESD protection circuit. The output transistor is provided between a battery voltage terminal and an output terminal coupled to a load. The driver control circuit switches on-off state of the output transistor by controlling a gate voltage of the output transistor with reference to a voltage of the output terminal. The negative potential clamp circuit turns on the output transistor regardless of control from the control circuit when a negative voltage lower than a predetermined voltage is applied to the output terminal.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: December 29, 2020
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Kazuaki Kubo, Koichiro Hashimoto
  • Patent number: 10711946
    Abstract: A combustible gas supply unit includes a high pressure gas facility for handling combustible gas which is compressed and a housing provided with a high pressure gas handling area containing the high pressure gas facility. The housing has a portion that is disposed in a side close to a boundary between premises of a hydrogen station and an outer region of the premises and constitutes the high pressure gas handling area, the portion being substantially composed of a partitioning wall member that resists an impact of an explosion of combustible gas.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: July 14, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Takayuki Fukuda, Kenji Nagura, Koichiro Hashimoto, Daisuke Wada, Takuya Washio
  • Patent number: 10626754
    Abstract: A compression device is equipped with a compressor (102) and a heat energy recovery unit (200) that recovers heat energy from a compressed gas. The heat energy recovery unit (200) is equipped with: a heat exchanger (202) that has an inflow port (202a), and that heats an operating medium by means of the heat from the compressed gas; an expansion device (210); a power recovery unit (212); a condenser (214); and a pump (222). The heat exchanger (202) is arranged closer to the compressor (102) than the expansion device (210), and is oriented such that the inflow port (202a) faces the compressor (102).
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: April 21, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Koichiro Hashimoto, Kazumasa Nishimura, Shigeto Adachi, Yutaka Narukawa, Haruyuki Matsuda, Tetsuya Kakiuchi, Noboru Tsuboi, Kazunori Fukuhara
  • Publication number: 20190376862
    Abstract: A compression device (1) includes compression portions, a suction line, connection lines, a discharge line, and display portions (d) configured to display pressure values, pressure gauges (PG1 to PG6) provided for at least one of the suction line, the connection lines, and the discharge line and a housing (40). The housing (40) includes a peripheral wall (42) and a door (44). The pressure gauges (PG1 to PG6) are situated at positions to face the door (44).
    Type: Application
    Filed: May 31, 2019
    Publication date: December 12, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Koichiro HASHIMOTO, Naofumi KANEI, Takuya WASHIO, Daisuke WADA, Ryosuke MORI
  • Publication number: 20190353306
    Abstract: The present application includes a compressor having a cylinder forming a compression chamber in which gas is compressed, a housing having a peripheral wall forming an internal space in which the compressor is stored, and a supporting member situated above the compressor in the internal space. The peripheral wall includes an opening wall in which a carry-out port is formed through which the cylinder is carried out. The supporting member extends to guide movement of a first lifting device between a position above the compressor and a position above the carry-out port. The cylinder is hung from the first lifting device.
    Type: Application
    Filed: May 6, 2019
    Publication date: November 21, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Koichiro HASHIMOTO, Kenji NAGURA, Takuya WASHIO, Ryosuke MORI, Daisuke WADA
  • Patent number: 10473268
    Abstract: A gas supply apparatus includes; a compressor unit including a compression section compressing hydrogen gas and storing pressure accumulators with the compressed hydrogen gas and a drive portion including an electric motor as drive source and driving the compression section; and a control unit controlling the electric motor. The electric motor has output characteristics where rated torque can be maintained against rotational speed changes in a standard rotation region, rotation region at or below standard speed, and output torque decreases from the rated torque as electric motor rotational speed increases in an overspeed region, rotation region above the standard speed. The control unit performs, in at least part of a storage process where the compression section stores the pressure accumulators with the hydrogen gas until set pressure is reached, overspeed operation control for allowing driving of the electric motor in the overspeed region.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: November 12, 2019
    Assignee: Kobe Steel, Ltd.
    Inventors: Takashi Okuno, Koichiro Hashimoto, Kenji Nagura
  • Publication number: 20190128265
    Abstract: A gas supplying apparatus includes a compressor, a housing having an exhaust port, and an exhaust duct. The housing has a circumferential wall and a top wall. The circumferential wall has an access section. The exhaust port is provided on at least one of the circumferential wall and the top wall at a location higher than the access section. The exhaust duct includes a discharge port for discharging the air, exhausted from the exhaust port, to the outside. The discharge port is opened upward or opened downward in an area overlapping the top wall in an up-and-down direction.
    Type: Application
    Filed: October 16, 2018
    Publication date: May 2, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Takuya WASHIO, Koichiro HASHIMOTO, Daisuke WADA, Kenji NAGURA, Akitoshi FUJISAWA
  • Patent number: 10234183
    Abstract: A compressing device of the present invention comprises a compressor, a heat exchanger, an expander, a power recovery unit, a condenser, a pump, a bypass flow passage for bypassing the expander, and a bypass valve. When a bypass condition for allowing a working medium to circulate through the bypass flow passage is satisfied, the bypass valve is caused to be opened, thereby allowing the working medium to circulate between the heat exchanger and the condenser through the bypass flow passage. As a result, a compressed gas discharged from the compressor is cooled by the working medium in the heat exchanger. This configuration makes it possible to cool the compressed gas by the working medium in the heat exchanger regardless of operation conditions of the expander.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: March 19, 2019
    Assignee: Kobe Steel, Ltd.
    Inventors: Koichiro Hashimoto, Kazumasa Nishimura, Shigeto Adachi, Yutaka Narukawa, Haruyuki Matsuda, Tetsuya Kakiuchi, Noboru Tsuboi, Kazunori Fukuhara
  • Publication number: 20190041003
    Abstract: A gas supply device includes a compressor for compressing gas, an in-flow side flow passage having a buffer tank for storing the gas and linked to the compressor, an in-flow side on-off valve for opening and closing the in-flow side flow passage on an portion of the in-flow side flow passage upstream of the buffer tank, an out-flow side flow passage linked to a discharge side of the compressor, and a control unit for executing a control to close the in-flow side on-off valve upon receipt of a stop signal for the compressor.
    Type: Application
    Filed: January 27, 2017
    Publication date: February 7, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Koichiro HASHIMOTO, Akitoshi FUJISAWA, Takayuki FUKUDA, Daisuke WADA, Takuro UBA, Kenji NAGURA
  • Publication number: 20190032850
    Abstract: A combustible gas supply unit includes a high pressure gas facility for handling combustible gas which is compressed and a housing provided with a high pressure gas handling area containing the high pressure gas facility. The housing has a portion that is disposed in a side close to a boundary between premises of a hydrogen station and an outer region of the premises and constitutes the high pressure gas handling area, the portion being substantially composed of a partitioning wall member that resists an impact of an explosion of combustible gas.
    Type: Application
    Filed: July 26, 2018
    Publication date: January 31, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Takayuki FUKUDA, Kenji NAGURA, Koichiro HASHIMOTO, Daisuke WADA, Takuya WASHIO
  • Publication number: 20190035070
    Abstract: Present application discloses portable recording apparatus to be used for recording inspection result for hydrogen station. Recording apparatus includes image generator configured to generate input image, which is configured to receive input of inspection result, and circuit configuration image which represents part of circuit configuration in hydrogen station; display portion configured to display input image and circuit configuration image; and storage in which inspection result is stored, inspection result having been input by using input image which is displayed on display portion. Input image shows icons representing predetermined inspection points in hydrogen station, respectively, and input windows displayed in correspondence to inspection points, respectively.
    Type: Application
    Filed: July 26, 2018
    Publication date: January 31, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Takayuki FUKUDA, Kenji NAGURA, Koichiro HASHIMOTO
  • Publication number: 20180248365
    Abstract: There is a need to provide a semiconductor device and an electronic control system including the same while the semiconductor device is capable of continuing normal operation even when a negative surge voltage is applied. According to an embodiment, a driver IC includes an output transistor, a driver control circuit, a negative potential clamp circuit, and an ESD protection circuit. The output transistor is provided between a battery voltage terminal and an output terminal coupled to a load. The driver control circuit switches on-off state of the output transistor by controlling a gate voltage of the output transistor with reference to a voltage of the output terminal. The negative potential clamp circuit turns on the output transistor regardless of control from the control circuit when a negative voltage lower than a predetermined voltage is applied to the output terminal.
    Type: Application
    Filed: December 29, 2017
    Publication date: August 30, 2018
    Inventors: Kazuaki KUBO, Koichiro HASHIMOTO
  • Patent number: 9797272
    Abstract: A thermal energy recovery device includes: a circulating flow path connected to a heater, an expander, a condenser and a circulating pump for circulating a working medium; a bypass valve in a bypass path connecting the upstream side region and the downstream side region of the expander in the circulating flow path; a power recovery machine connected to the expander; a circulating pump sending the working medium condensed in the condenser to the heater; a cooling medium pump sending a cooling medium to the condenser; an upstream side sensor detecting the pressure/temperature of the working medium on the expander upstream side in the circulating flow path; and a controller controlling the bypass valve and the cooling medium pump. The controller opens the bypass valve after stopping the circulating pump, and drives the cooling medium pump if the pressure/temperature of the working medium on the expander upstream side exceeds a threshold.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: October 24, 2017
    Assignee: Kobe Steel, Ltd.
    Inventors: Shigeto Adachi, Takayuki Fukuda, Koichiro Hashimoto
  • Patent number: 9771835
    Abstract: A heat energy recovery device 1, which recovers heat energy of a heat medium by utilizing a Rankine cycle of a working medium, comprises a first heater 2, a second heater 3, an expander 4, an oil separation unit 12, a condenser 6, a working medium pump 7, and an oil-leading passage 10. When the height of a liquid level in the oil separation unit 12 is less than a lower limit value, a control unit 16 first performs a speed reduction control of the working medium pump 7 to reduce an inflow rate of a working medium into the second heater 3, and after a fixed period of time, performs an opening control for opening an on-off unit 11. By the opening of the on-off valve 11, oil L1 in the second heater 3 is led out to the oil separation unit 12 through the oil-leading passage 10.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: September 26, 2017
    Assignee: Kobe Steel, Ltd.
    Inventors: Shigeto Adachi, Yutaka Narukawa, Noboru Tsuboi, Koichiro Hashimoto, Haruyuki Matsuda, Kazumasa Nishimura, Tetsuya Kakiuchi, Kazunori Fukuhara