Patents by Inventor Yoshiki Kato
Yoshiki Kato 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: 20240141073Abstract: A method for manufacturing a cellulose derivative includes a step of preparing a low crystalline cellulose having a degree of crystallinity of 70% or less and a step of derivatizing the low crystalline cellulose described above.Type: ApplicationFiled: October 25, 2023Publication date: May 2, 2024Inventors: Yoshiki NAKASHIMA, Hideki TANAKA, Sotaro OANA, Makoto KATO
-
Publication number: 20240084893Abstract: A power generation system includes: a prime mover; a magnetic gear generator configured to be driven by an input from the prime mover to generate power; a power converter connected to the magnetic gear generator; an operation mode switch unit configured to switch an operation mode of the magnetic gear generator to a step-out avoidance mode in response to that a step-out parameter indicating a risk of step-out of the magnetic gear generator exceeds a prescribed allowable range; and a reduction command unit configured to give the prime mover an input reduction command to reduce the input from the prime mover and configured to give the power converter a torque reduction command to reduce a generator torque of the magnetic gear generator, in the step-out avoidance mode.Type: ApplicationFiled: February 22, 2022Publication date: March 14, 2024Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Tsuyoshi Wakasa, Mikito Sasaki, Yuichiro Yazaki, Takatoshi Matsushita, Yoshiki Kato
-
Patent number: 11897316Abstract: A refrigeration cycle device includes a high-temperature heating medium regulator and a controller. The high-temperature heating medium regulator regulates a high-temperature heating medium flow ratio between the flow rate of high-temperature heating medium flowing in an air heater and the flow rate of high-temperature heating medium flowing in a radiator. The controller controls the high-temperature heating medium regulator to regulate the high-temperature heating medium flow ratio such that excess heat is radiated to air outside the cabin by the radiator, of the heat radiated from the refrigerant to the high-temperature heating medium by a high-pressure-side heat exchanger, with respect to heat required for heating air blown into a cabin by the air heater to have a target outlet temperature.Type: GrantFiled: June 9, 2021Date of Patent: February 13, 2024Assignee: DENSO CORPORATIONInventors: Naoya Makimoto, Yoshiki Kato
-
Patent number: 11833887Abstract: A vehicular air conditioner includes a refrigeration cycle system, a high-temperature heat medium circuit, and a low-temperature heat medium circuit. The high-temperature heat medium circuit includes an air-heat medium heat exchanger, a heater core, a branching portion, a common passage, a flow rate adjuster, and an auxiliary heat source. The air-heat medium heat exchanger exchanges heat between the heat medium and an outside air. The heater core is arranged parallel to the air-heat medium heat exchanger and causes the heat medium to transfer heat to a ventilation air. The branching portion divides a flow of the heat medium into a flow toward the air-heat medium heat exchanger and a flow toward the heater core. The auxiliary heat source is arranged in the common passage at a position upstream of the branching portion.Type: GrantFiled: June 22, 2021Date of Patent: December 5, 2023Assignee: DENSO CORPORATIONInventors: Hiroaki Kawano, Yoshiki Kato, Masamichi Makihara, Takahiro Maeda, Kuniyoshi Tanioka, Toru Okamura, Naoya Makimoto
-
Patent number: 11787258Abstract: In a refrigeration cycle device, in an operation mode in which a refrigerant does not flows into a cooling evaporator, a throttle opening degree characteristic of a heat absorption valve disposed upstream of a heat absorption evaporator is set to cause the refrigerant on the outlet side of the heat absorption evaporator to be in a gas-liquid two-phase state.Type: GrantFiled: February 24, 2020Date of Patent: October 17, 2023Assignee: DENSO CORPORATIONInventors: Naoya Makimoto, Yoshiki Kato
-
Publication number: 20230253582Abstract: A heat insulation structure for a high-temperature reaction room includes a heat insulating body surrounding the reaction room. The heat insulating body contains a binder component including a metal element and is arranged so as to face an insulating film disposed on a cell stack. Transfer of metal ions originating in the metal element from the heat insulating body toward the insulating film is suppressed by a metal ion transfer suppression means.Type: ApplicationFiled: December 25, 2020Publication date: August 10, 2023Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yoshiki Kato, Shigenori Suemori, Koji Miyamoto, Kenta Araki, Keijo Hara
-
Publication number: 20230227000Abstract: Provided in a vehicle are: an external communications unit provided outside the compartment of the vehicle; and an internal communications unit provided inside the vehicle compartment. A position determination system includes a data acquisition unit that obtains reception signal strength data for radio waves that have been communicated and measured, between the external communications unit and a terminal and between the internal communications unit and the terminal. The position determination system also includes a position determination unit that determines whether the terminal is positioned outside or inside the vehicle, from the results of comparison between the size of data obtained from communication between the external communications unit and the terminal and between the internal communications unit and the terminal. In addition, the external communications unit is disposed inside a body component located around a rear wheel of the vehicle.Type: ApplicationFiled: June 21, 2021Publication date: July 20, 2023Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Yoshiki KATO, Masanori KOSUGI, Tadashi FUKAGAI, Nobuaki TSUTSUMI
-
Publication number: 20230130879Abstract: A fuel cell power generation system includes: a fuel cell; at least one compressor disposed on an oxidant supply line for supplying an oxidizing gas to the fuel cell; a first motor configured to drive a first compressor among the at least one compressor; and at least one power converter disposed between the first motor and a power grid, and capable of adjusting a torque of the first motor.Type: ApplicationFiled: February 18, 2021Publication date: April 27, 2023Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yasushi Iwai, Norihisa Matake, Hiroyuki Ozawa, Yoshiki Kato, Nagao Hisatome
-
Publication number: 20230048425Abstract: A fuel cell power generation system is provided with: at least one fuel cell module each of which includes a fuel cell having a fuel-side electrode, an electrolyte, and an oxygen-side electrode; at least one fuel supply line for supplying a fuel gas to the fuel-side electrode included in the at least one fuel cell module; at least one oxidizing gas supply line for supplying an oxidizing gas to the oxygen-side electrode included in the at least one fuel cell module; and a most downstream exhaust fuel gas line through which an exhaust fuel gas discharged from a most downstream module that is disposed most downstream in a flow of the fuel gas among the at least one fuel cell module flows. The most downstream exhaust fuel gas line is configured to supply the exhaust fuel gas to the oxygen-side electrode included in any of the fuel cell modules.Type: ApplicationFiled: January 27, 2021Publication date: February 16, 2023Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Norihisa Matake, Yasushi Iwai, Hiroyuki Ozawa, Yoshiki Kato, Nagao Hisatome
-
Publication number: 20230006221Abstract: A pressurized air supply system supplies, to a pressurization object device, flowing air that includes at least one of compressed air, which is generated by compressing air supplied from an air supply source, or discharged air from a turbocharger compressor forming a turbocharger. The compressor is controlled such that a saturated steam temperature of the flowing air supplied from the air supply source to the pressurization object device is lower than a temperature in the pressurization object device, at startup.Type: ApplicationFiled: December 18, 2020Publication date: January 5, 2023Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yasushi Iwai, Ryutaro Mori, Hiroyuki Ozawa, Yoshiki Kato
-
Patent number: 11498391Abstract: An air conditioner is configured to be switchable between a heating mode and a cooling mode. In the cooling mode, a high-temperature heat medium circulates between a high-pressure side refrigerant-heat medium heat exchanger and a high-temperature heat medium-outside air heat exchanger in a state where a refrigerant circulates in an air-cooling heat exchanger. In the heating mode, the high-temperature heat medium circulates between the high-pressure side refrigerant-heat medium heat exchanger and an air-heating heat exchanger, while a low-temperature heat medium circulates between a low-pressure side refrigerant-heat medium heat exchanger and a low-temperature heat medium-outside air heat exchanger, in a state where the refrigerant circulates in the low-pressure side refrigerant-heat medium heat exchanger.Type: GrantFiled: January 28, 2020Date of Patent: November 15, 2022Assignee: DENSO CORPORATIONInventors: Kosuke Shiratori, Yoshiki Kato
-
Patent number: 11448428Abstract: A refrigeration cycle device includes a compressor, a heater device, a high-stage side decompressor, a gas-liquid separator, a refrigerant branch portion, a first decompressor, a first evaporator, a second decompressor, and a second evaporator. The compressor has an intermediate pressure port through which an intermediate-pressure refrigerant flows into the compressor. The gas-liquid separator is configured to separate the intermediate-pressure refrigerant into a gas refrigerant and a liquid refrigerant. The refrigerant branch portion is configured to divide a flow of the liquid refrigerant separated by the gas-liquid separator. In a cooling mode for cooling a heat exchange target fluid, a refrigerant circuit is switched such that a low-pressure refrigerant flows from the branch portion to the first evaporator. In a heating mode for heating the heat exchange target fluid, the refrigerant circuit is switched such that the low-pressure refrigerant flows from the branch portion to the second evaporator.Type: GrantFiled: January 22, 2020Date of Patent: September 20, 2022Assignee: DENSO CORPORATIONInventor: Yoshiki Kato
-
Patent number: 11421564Abstract: When an EDU determines that a motor is in a control unstable state where the motor cannot be controlled to a target rotation speed due to a drive voltage output duty value being smaller than a threshold value, the EDU performs a control point shifting operation to shift a control point between a first control point, which is in the control unstable state, and a second control point, which is a control stable state outside the control unstable state. Thus, even when the motor is in a stepping rotation state, it is possible to control the target rotation speed regardless of influence of a cogging torque, and appropriately control the cam phase of the intake camshaft to a target phase when the engine is stopped.Type: GrantFiled: April 22, 2020Date of Patent: August 23, 2022Assignee: DENSO CORPORATIONInventor: Yoshiki Kato
-
Patent number: 11408615Abstract: A refrigeration cycle device includes a compressor, a heating radiator, a heat medium radiator, a decompressor, an evaporator, and a radiation amount adjuster. The heating radiator is configured to allow a high-pressure refrigerant to release heat to a heat exchange target fluid. The heat medium radiator is configured to allow the high-pressure refrigerant to release heat to a high-temperature side heat medium. The radiation amount adjuster is configured to adjust heat radiation amount radiated from the high-pressure refrigerant to the heat exchange target fluid at the heating radiator. In a heating mode, the radiation amount adjuster is configured to adjust the heat radiation amount at the heating radiator to be larger than a heat radiation amount at the heat medium radiator. In a cooling mode, the radiation amount adjuster is configured to adjust the heat radiation amount at the heating radiator to be lower than that in the heating mode.Type: GrantFiled: January 22, 2020Date of Patent: August 9, 2022Assignee: DENSO CORPORATIONInventor: Yoshiki Kato
-
Publication number: 20220223887Abstract: A pressurized air supply system includes a turbocharger including a turbine and a compressor, a recuperator for heat exchange between discharged air from the compressor and flue gas exhausted from the turbine, a start-up heater for heating the air, that includes at least either of start-up air or pressurized air from the compressor, which is supplied to discharged air line between the compressor outlet and the recuperator, and a catalytic combustor for supplying, to the turbine, combustion gas which is generated by combustion of fuel with the flowing air heated by the start-up heater.Type: ApplicationFiled: October 25, 2019Publication date: July 14, 2022Inventors: Yasushi IWAI, Norihisa MATAKE, Yoshiki KATO, Hiroyuki OOZAWA
-
Patent number: 11299014Abstract: A refrigeration cycle device includes a high-temperature side heat exchanger, an expansion valve for decompressing the refrigerant flowing out of the high-temperature side heat exchanger, a low-temperature side heat exchanger that exchanges heat between the refrigerant decompressed by the expansion valve and coolant, a high-temperature coolant circuit in which the coolant circulates to the high-temperature side heat exchanger, a low-temperature coolant circuit in which the coolant circulates to the low-temperature side heat exchanger, a battery and a low-temperature side radiator configured to exchange heat with the coolant in the low-temperature coolant circuit; and a heat transfer portion configured to transfer heat from the high-temperature coolant circuit to the low-temperature coolant circuit such that the coolant dissipates heat in the battery and the low-temperature side radiator.Type: GrantFiled: March 3, 2020Date of Patent: April 12, 2022Assignee: DENSO CORPORATIONInventors: Yoshiki Kato, Naoya Makimoto, Takuya Fuse
-
Publication number: 20220011006Abstract: An air conditioner includes a heat pump cycle, a heating unit, a low-temperature side heat medium circuit, and a heat dissipation amount adjustment control unit. The heat pump cycle has a compressor, a condenser, a decompression unit, and an evaporator. The heating unit has a heating heat exchanger, an outside air radiator, and a heat dissipation amount adjustment unit. The low-temperature side heat medium circuit has a heat generation device. The heat dissipation amount adjustment control unit controls the heat dissipation amount adjustment unit to adjust a heat dissipation amount in the outside air radiator such that a blown air temperature of the blown air heated by the heating heat exchanger approaches a predetermined target temperature.Type: ApplicationFiled: September 24, 2021Publication date: January 13, 2022Inventors: Koji MIURA, Hiroaki KAWANO, Motohiro YAMAGUCHI, Kazuya TANIGUCHI, Yoshiki KATO, Masamichi MAKIHARA, Takahiro MAEDA, Kuniyoshi TANIOKA, Toru OKAMURA, Naoya MAKIMOTO, Atsushi YAMADA, Kenta KAYANO
-
Publication number: 20220009309Abstract: A refrigeration cycle device includes a heat pump cycle, a high-temperature heat medium circuit, and a low-temperature heat medium circuit. The low-temperature heat medium circuit includes a plurality of heat absorption devices configured to have a heat absorption amount to be absorbed by the low-temperature heat medium flowing out of a low-temperature heat medium-refrigerant heat exchanger, and a heat absorption adjusting unit configured to change the heat absorption amount of the low-temperature heat medium in the respective heat absorption devices.Type: ApplicationFiled: September 24, 2021Publication date: January 13, 2022Inventors: Koji MIURA, Hiroaki KAWANO, Motohiro YAMAGUCHI, Kazuya TANIGUCHI, Yoshiki KATO, Masamichi MAKIHARA, Takahiro MAEDA, Kuniyoshi TANIOKA, Toru OKAMURA, Naoya MAKIMOTO
-
Publication number: 20210316594Abstract: A vehicular air conditioner includes a refrigeration cycle system, a high-temperature heat medium circuit, and a low-temperature heat medium circuit. The high-temperature heat medium circuit includes an air-heat medium heat exchanger, a heater core, a branching portion, a common passage, a flow rate adjuster, and an auxiliary heat source. The air-heat medium heat exchanger exchanges heat between the heat medium and an outside air. The heater core is arranged parallel to the air-heat medium heat exchanger and causes the heat medium to transfer heat to a ventilation air. The branching portion divides a flow of the heat medium into a flow toward the air-heat medium heat exchanger and a flow toward the heater core. The auxiliary heat source is arranged in the common passage at a position upstream of the branching portion.Type: ApplicationFiled: June 22, 2021Publication date: October 14, 2021Inventors: Hiroaki KAWANO, Yoshiki KATO, Masamichi MAKIHARA, Takahiro MAEDA, Kuniyoshi TANIOKA, Toru OKAMURA, Naoya MAKIMOTO
-
Publication number: 20210291626Abstract: A refrigeration cycle device includes a high-temperature heating medium regulator and a controller. The high-temperature heating medium regulator regulates a high-temperature heating medium flow ratio between the flow rate of high-temperature heating medium flowing in an air heater and the flow rate of high-temperature heating medium flowing in a radiator. The controller controls the high-temperature heating medium regulator to regulate the high-temperature heating medium flow ratio such that excess heat is radiated to air outside the cabin by the radiator, of the heat radiated from the refrigerant to the high-temperature heating medium by a high-pressure-side heat exchanger, with respect to heat required for heating air blown into a cabin by the air heater to have a target outlet temperature.Type: ApplicationFiled: June 9, 2021Publication date: September 23, 2021Inventors: Naoya MAKIMOTO, Yoshiki KATO