Patents by Inventor Ryo Miyakoshi
Ryo Miyakoshi 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).
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Patent number: 12172497Abstract: An air conditioner for a vehicle is provided which can realize suitable temperature control when having a plurality of evaporators even if the load in each evaporator fluctuates. An air conditioner 1 for a vehicle includes at least a compressor 2, a heat absorber 9 to evaporate a refrigerant, a refrigerant-heat medium heat exchanger 64, and a control device 11, and conditions air of a vehicle interior. The control device 11 calculates target numbers of revolutions TGNCc and TGNCcb of the compressor 2 required to control the temperature of the heat absorber 9 and the temperature of a heat medium cooled by the refrigerant-heat medium heat exchanger 64, respectively, and selects the maximum value of them to control the operation of the compressor 2.Type: GrantFiled: February 19, 2021Date of Patent: December 24, 2024Assignee: SANDEN CORPORATIONInventors: Kouhei Yamashita, Ryo Miyakoshi
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Publication number: 20240399825Abstract: A vehicle heat management system includes a refrigerant circuit including a refrigerant-heat medium heat exchanger, and a heat medium circuit. Two or more of at least three heat exchangers are selected, and one of them functions as a condenser, and the other functions as an evaporator. The refrigerant-heat medium heat exchanger includes a first and a second refrigerant-heat medium heat exchanger. The heat medium circuit includes a switch device configured to be able to switch between a circuit state in which the heat medium having passed through the second refrigerant-heat medium heat exchanger flows to the first refrigerant-heat medium heat exchanger and a circuit state in which a flow path of the heat medium having passed through the first refrigerant-heat medium heat exchanger and a flow path of the heat medium having passed through the second refrigerant-heat medium heat exchanger form individual circuits, respectively.Type: ApplicationFiled: May 23, 2022Publication date: December 5, 2024Inventors: Nobutaka SHIMIZU, Osamu TAKAZAWA, Ryo MIYAKOSHI, Wataru IWAZAKI, Masaaki SATO
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Patent number: 12110405Abstract: An aqueous dispersion contains emulsion resin particles that contains pigment enclosing emulsion resin particles enclosing an inorganic pigment, wherein the pigment enclosing emulsion resin particles have a 50 percent cumulative volume particle diameter (D50) of from 40 to 300 nm as measured by laser diffraction scattering method, wherein the pigment enclosing emulsion resin particles have an average aspect ratio of from 1.0 to 1.5.Type: GrantFiled: September 16, 2021Date of Patent: October 8, 2024Assignee: Ricoh Company, Ltd.Inventors: Ryo Miyakoshi, Takuya Yamazaki, Chikako Hatta
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Publication number: 20240270050Abstract: A heat medium temperature adjustment system includes a heat medium circuit configured to circulate heat medium having a temperature controlled by a heat exchange with a heat source. The heat medium circuit includes a pump configured to pump the heat medium, and a plurality of heat exchangers for temperature-adjustment subjects configured to perform heat exchanges with temperature-adjustment subjects. The heat medium circuit is configured to form a series flow path to connect the pump to the plurality of heat exchangers for temperature-adjustment subjects when a system malfunction occurs.Type: ApplicationFiled: June 23, 2022Publication date: August 15, 2024Inventors: Nobutaka SHIMIZU, Osamu TAKAZAWA, Ryo MIYAKOSHI, Wataru IWAZAKI, Masaaki SATO
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Patent number: 12043717Abstract: Provided is a foam sheet includes a composition including polylactic acid. The polylactic acid includes, as monomer units. D-lactic acid and L-lactic acid, and an amount of the D-lactic acid or the L-lactic acid in the polylactic acid is 98 mol % or greater. An amount of the polylactic acid is 98% by mass or greater relative to a total amount of organic matter in the foam sheet. Bulk density of the foam sheet is 0.063 g/cm3 or greater but 0.125 g/cm3 or less.Type: GrantFiled: November 19, 2021Date of Patent: July 23, 2024Assignee: Ricoh Company, Ltd.Inventors: Yoshimitsu Kumai, Taichi Nemoto, Shizuka Hashida, Ryo Miyakoshi
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Publication number: 20240157757Abstract: A vehicle air conditioning apparatus includes: a refrigerant circuit including a compressor configured to compress refrigerant, an outdoor heat exchanger configured to perform a heat exchange between the refrigerant and outdoor air, and a heat absorption heat exchanger configured to absorb heat from a heat-absorbed subject; and a controller configured to control the refrigerant circuit. The controller can selectively perform a plurality of defrosting modes including: a hot gas defrosting mode to defrost the outdoor heat exchanger by the refrigerant compressed by the compressor; and a heat absorption defrosting mode to defrost the outdoor heat exchanger by the refrigerant absorbing the heat from the heat-absorbed subject and compressed by the compressor. The controller sets a hot gas defrosting priority condition to preferentially select the hot gas defrosting mode.Type: ApplicationFiled: March 22, 2022Publication date: May 16, 2024Inventors: Megumi SHIGETA, Ryo MIYAKOSHI, Yoshiyuki OKAMOTO
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Publication number: 20240157756Abstract: A vehicle air conditioning apparatus includes: a refrigerant circuit including a compressor configured to compress refrigerant, an outdoor heat exchanger configured to perform a heat exchange between the refrigerant and outdoor air, and a heat absorption heat exchanger configured to absorb heat from a heat-absorbed subject into the refrigerant; and a controller configured to control the refrigerant circuit. The controller can selectively perform defrosting modes including: a hot gas defrosting mode to defrost the outdoor heat exchanger by the refrigerant compressed by the compressor; and a heat absorption defrosting mode to defrost the outdoor heat exchanger by the refrigerant absorbing the heat from the heat-absorbed subject and compressed by the compressor. The controller sets a selecting condition to preferentially select the heat absorption defrosting mode, and a switching condition to switch the heat absorption defrosting mode to the hot gas defrosting mode and performs the hot gas defrosting mode.Type: ApplicationFiled: March 22, 2022Publication date: May 16, 2024Inventors: Ryo MIYAKOSHI, Megumi SHIGETA, Yoshiyuki OKAMOTO
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Patent number: 11951662Abstract: A foamed sheet including: a polylactic acid; and a filler, wherein the foamed sheet has a compressive stress of 0.2 Mpa or less when the cushioning coefficient of the foamed sheet is 10 or less; and wherein the foamed sheet has a puncture strength of 2 N or more when the sheet thickness of the foamed sheet is 2 mm.Type: GrantFiled: November 23, 2021Date of Patent: April 9, 2024Assignee: RICOH COMPANY, LTD.Inventors: Taichi Nemoto, Shizuka Hashida, Yoshimitsu Kumai, Ryo Miyakoshi, Tomoharu Miki
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Publication number: 20240059125Abstract: A vehicle air-conditioning apparatus according to the present invention includes an air-conditioning refrigerant circuit that circulates a refrigerant to cool an inside of a vehicle, a branching refrigerant circuit that branches from the air-conditioning refrigerant circuit and cools a heat generating device, a branching control valve that is provided in the branching refrigerant circuit and controls a flow of the refrigerant flowing into the branching refrigerant circuit from the air-conditioning refrigerant circuit, and a control unit that controls an operation of the air-conditioning refrigerant circuit and the branching control valve. After transition to an operation of cooling the inside of the vehicle by the air-conditioning refrigerant circuit and cooling the heat generating device by the branching refrigerant circuit in parallel, the control unit opens and closes the branching control valve in accordance with a cooling capacity state of the air-conditioning refrigerant circuit.Type: ApplicationFiled: August 26, 2021Publication date: February 22, 2024Inventors: Ryo MIYAKOSHI, Yoshiki SHIBAOKA
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Publication number: 20240034851Abstract: Provided is a method of manufacturing a molded body. The method includes: producing a foam sheet having a crystallinity degree A of 7.5% or less by using a composition containing polylactic acid comprising 98 mol % or more of any one among a D-isomer of lactic acid and an L-isomer of lactic acid as a constituent monomer unit; and molding the foam sheet with heat to produce a molded body, and a difference (B?A) between the crystallinity degree A of the foam sheet and the crystallinity degree B of the molded body is 20.0% or more and 40.0% or less.Type: ApplicationFiled: July 21, 2023Publication date: February 1, 2024Applicant: Ricoh Company, Ltd.Inventors: Yuya Hirokawa, Ryo Miyakoshi, Satoshi Ogawa, Yoshimitsu Kumai, Risa Tamura
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Publication number: 20240025231Abstract: A vehicle air conditioning apparatus including: a refrigerant circuit includes: a compressor to compress refrigerant; a heat absorbing device to absorb heat from air to be supplied to a vehicle compartment; and a temperature-adjusted subject heat exchanger; a device temperature adjustment circuit connected to the refrigerant circuit via the temperature-adjusted subject heat exchanger, and configured to adjust a temperature of a temperature-adjusted subject mounted in a vehicle by the temperature-adjusted subject heat exchanger; and a controller configured to control the refrigerant circuit and the device temperature adjustment circuit.Type: ApplicationFiled: November 19, 2021Publication date: January 25, 2024Applicant: SANDEN CORPORATIONInventors: Kouhei YAMASHITA, Ryo MIYAKOSHI
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Patent number: 11745565Abstract: It is an object to improve the reliability of a temperature adjusting device which cools an in-vehicle device such as a battery by using a refrigerant. A device temperature adjusting device 61 that is an in-vehicle device temperature adjusting device adjusts the temperature of a battery 55 mounted on a vehicle and includes a refrigerant circuit R having a compressor 2 which compresses a refrigerant, an outdoor heat exchanger 7 for letting the refrigerant radiate heat, and a refrigerant-heat medium heat exchanger 64 for cooling the battery 55 by letting the refrigerant absorb heat, and a control device 11. The control device 11 stops the compressor 2 on the basis of the fact that the refrigerant circuit R is blocked.Type: GrantFiled: April 15, 2020Date of Patent: September 5, 2023Assignee: SANDEN CORPORATIONInventors: Ryo Miyakoshi, Takashi Toyama
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Patent number: 11707964Abstract: A vehicle air conditioning device is provided which is capable of accurately judging the need for temperature regulation of an object of temperature regulation mounted in a vehicle and efficiently performing temperature regulation. A compressor 2 to compress a refrigerant, an indoor heat exchanger (radiator 4 and heat absorber 9) for exchanging heat between air supplied to a vehicle interior and the refrigerant, an outdoor heat exchanger 7 disposed outside the vehicle interior, and a control device 11 are provided to perform air conditioning of the vehicle interior. An equipment temperature adjusting device 61 for adjusting the temperature of the object of temperature regulation mounted in the vehicle is provided. The control device controls the equipment temperature adjusting device 61 on the basis of a gradient (?Tw) of a change in an index indicating the temperature of the object of temperature regulation.Type: GrantFiled: September 13, 2019Date of Patent: July 25, 2023Assignee: SANDEN CORPORATIONInventor: Ryo Miyakoshi
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Publication number: 20230137140Abstract: An air conditioner for a vehicle is provided which can realize suitable temperature control when having a plurality of evaporators even if the load in each evaporator fluctuates. An air conditioner 1 for a vehicle includes at least a compressor 2, a heat absorber 9 to evaporate a refrigerant, a refrigerant-heat medium heat exchanger 64, and a control device 11, and conditions air of a vehicle interior. The control device 11 calculates target numbers of revolutions TGNCc and TGNCcb of the compressor 2 required to control the temperature of the heat absorber 9 and the temperature of a heat medium cooled by the refrigerant-heat medium heat exchanger 64, respectively, and selects the maximum value of them to control the operation of the compressor 2.Type: ApplicationFiled: February 19, 2021Publication date: May 4, 2023Applicant: SANDEN CORPORATIONInventors: Kouhei YAMASHITA, Ryo MIYAKOSHI
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Publication number: 20230040052Abstract: Provided is an image forming method including: applying an ink to a print medium and heating the print medium to which the ink is applied at a heating temperature of 60 degrees C. or higher. The ink contains pigment-encapsulating resin particles comprising a pigment and a resin encapsulating the pigment. A proportion of the pigment alone exposed without being encapsulated with the resin is 10% by mass or less relative to solid components contained in the ink. Amass ratio of the pigment to the resin in the pigment-encapsulating resin particles is 0.25 or greater but 1.0 or less. A contact angle ?m (°) of the ink when the ink is dropped by 5 microliters onto a print medium at 73 degrees C. is 25° or less.Type: ApplicationFiled: July 15, 2022Publication date: February 9, 2023Applicant: Ricoh Company, Ltd.Inventors: Chikako HATTA, Ryo Miyakoshi, Takuya Yamazaki
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Patent number: 11506423Abstract: A vehicle air-conditioning apparatus is provided which is capable of expanding an effective range of a dehumidifying and heating mode to achieve comfortable vehicle interior air conditioning. A control device (controller) executes a dehumidifying and heating mode to let a refrigerant discharged from a compressor 2 radiate heat in a radiator 4, let a part of the refrigerant flow from a bypass circuit (refrigerant pipe 13F) to an indoor expansion valve 8, and let the residual refrigerant flow through an outdoor expansion valve 6. In the dehumidifying and heating mode, the control device has a state of controlling the operation of the compressor 2, based on a heat absorber temperature Te and executes a radiator temperature priority mode which enlarges a capability of the compressor when heat radiation in the radiator is insufficient.Type: GrantFiled: January 12, 2018Date of Patent: November 22, 2022Assignee: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATIONInventors: Ryo Miyakoshi, Kouhei Yamashita, Tetsuya Ishizeki
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Publication number: 20220314742Abstract: It is an object to improve the reliability of a temperature adjusting device which cools an in-vehicle device such as a battery by using a refrigerant. A device temperature adjusting device 61 that is an in-vehicle device temperature adjusting device adjusts the temperature of a battery 55 mounted on a vehicle and includes a refrigerant circuit R having a compressor 2 which compresses a refrigerant, an outdoor heat exchanger 7 for letting the refrigerant radiate heat, and a refrigerant-heat medium heat exchanger 64 for cooling the battery 55 by letting the refrigerant absorb heat, and a control device 11. The control device 11 stops the compressor 2 on the basis of the fact that the refrigerant circuit R is blocked.Type: ApplicationFiled: April 15, 2020Publication date: October 6, 2022Applicant: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATIONInventors: Ryo MIYAKOSHI, Takashi TOYAMA
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Publication number: 20220169872Abstract: An aqueous dispersion contains water and resin particles containing a resin, wherein the resin particles contains pigment-enclosed resin particles containing an inorganic pigment enclosed in the resin, wherein the pigment-enclosed resin particles have a 50 percent cumulative volume particle diameter (D50) of from 40 to 200 nm and a 90 percent cumulative volume particle diameter (D90) of from 70 to 500 nm as measured by laser diffraction scattering, wherein the pigment-enclosed resin particles have an average aspect ratio of from 1.0 to 1.5.Type: ApplicationFiled: November 24, 2021Publication date: June 2, 2022Applicant: Ricoh Company, Ltd.Inventors: Ryo MIYAKOSHI, Takuya Yamazaki, Chikako Hatta
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Publication number: 20220162415Abstract: Provided is a foam sheet includes a composition including polylactic acid. The polylactic acid includes, as monomer units. D-lactic acid and L-lactic acid, and an amount of the D-lactic acid or the L-lactic acid in the polylactic acid is 98 mol % or greater. An amount of the polylactic acid is 98% by mass or greater relative to a total amount of organic matter in the foam sheet. Bulk density of the foam sheet is 0.063 g/cm3 or greater but 0.125 g/cm3 or less.Type: ApplicationFiled: November 19, 2021Publication date: May 26, 2022Applicant: Ricoh Company, Ltd.Inventors: Yoshimitsu Kumai, Taichi Nemoto, Shizuka Hashida, Ryo Miyakoshi
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Publication number: 20220161467Abstract: A foamed sheet including: a polylactic acid; and a filler, wherein the foamed sheet has a compressive stress of 0.2 Mpa or less when the cushioning coefficient of the foamed sheet is 10 or less; and wherein the foamed sheet has a puncture strength of 2 N or more when the sheet thickness of the foamed sheet is 2 mm.Type: ApplicationFiled: November 23, 2021Publication date: May 26, 2022Inventors: Taichi NEMOTO, Shizuka HASHIDA, Yoshimitsu KUMAI, Ryo MIYAKOSHI, Tomoharu MIKI