Patents by Inventor Koji Miura

Koji Miura 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: 20220009309
    Abstract: 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: Application
    Filed: September 24, 2021
    Publication date: January 13, 2022
    Inventors: Koji MIURA, Hiroaki KAWANO, Motohiro YAMAGUCHI, Kazuya TANIGUCHI, Yoshiki KATO, Masamichi MAKIHARA, Takahiro MAEDA, Kuniyoshi TANIOKA, Toru OKAMURA, Naoya MAKIMOTO
  • Publication number: 20220011006
    Abstract: 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: Application
    Filed: September 24, 2021
    Publication date: January 13, 2022
    Inventors: 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: 20210407714
    Abstract: To provide an R-T-B based permanent magnet having a high residual magnetic flux density Br at room temperature and a high coercivity HcJ at high temperature. In the R-T-B based permanent magnet, R is a rare earth element, T is an iron group element, and B is boron, and the R-T-B based permanent magnet includes a light rare earth element and a heavy rare earth element as R. The R-T-B based permanent magnet further includes Al, Ga, and Zr. With respect to 100 mass % of the R-T-B based permanent magnet, a total content of R is 28.50 mass % to 30.25 mass % (not including 28.50 mass %), B content is 0.93 mass % to 0.98 mass %, Al content is 0.03 mass % to 0.19 mass %, Ga content is 0.03 mass % to 0.15 mass %, and Zr content is 0.30 mass % to 0.50 mass %.
    Type: Application
    Filed: June 23, 2021
    Publication date: December 30, 2021
    Applicant: TDK CORPORATION
    Inventors: Koji MIURA, Masashi MIWA
  • Publication number: 20210313099
    Abstract: Provided is a permanent magnet including a rare-earth element R (such as Nd), a transition metal element T (such as Fe), B, Zr, and Cu. The permanent magnet contains a plurality of main phase grains including Nd, T, and B, and grain boundary multiple junctions, the one grain boundary multiple junction is a grain boundary surrounded by three or more of the main phase grains, one of the grain boundary multiple junctions contains a ZrB2 crystal and an R—Cu-rich phase including R and Cu, a concentration of B in the one grain boundary multiple junction containing both the ZrB2 crystal and the R—Cu-rich phase is from 5 to 20 atomic %, a concentration of Cu in the one grain boundary multiple junction containing both the ZrB2 crystal and the R—Cu-rich phase is from 5 to 25 atomic %, and a surface layer part of the main phase grain includes at least one kind of heavy rare-earth element among Tb and Dy.
    Type: Application
    Filed: March 16, 2021
    Publication date: October 7, 2021
    Applicant: TDK Corporation
    Inventors: Masashi MIWA, Koji MIURA, Taeko TSUBOKURA
  • Publication number: 20210304929
    Abstract: Provided is a permanent magnet including a rare-earth element R (such as Nd), a transition metal element T (such as Fe), B, Zr, and Cu. The permanent magnet contains a plurality of main phase grains including Nd, T, and B, and grain boundary multiple junctions, the one grain boundary multiple junction is a grain boundary surrounded by three or more of the main phase grains, one of the grain boundary multiple junctions contains a ZrB2 crystal and an R—Cu-rich phase including R and Cu, Fe is contained in the ZrB2 crystal, a total concentration of Nd and Pr in the one grain boundary multiple junction containing both the ZrB2 crystal and the R—Cu-rich phase is higher than a total concentration of Nd and Pr in the main phase grain, a concentration of Cu in the one grain boundary multiple junction containing both the ZrB2 crystal and the R—Cu-rich phase is higher than a concentration of Cu in the main phase grain, and a unit of the concentration of each of Nd, Pr, and Cu is atomic %.
    Type: Application
    Filed: March 16, 2021
    Publication date: September 30, 2021
    Applicant: TDK Corporation
    Inventors: Masashi MIWA, Yoshitomo TANAKA, Koji MIURA, Taeko TSUBOKURA
  • Publication number: 20210280925
    Abstract: In a device temperature regulator, an evaporator cools a target device by a latent heat of evaporation of a working fluid that absorbs heat from the target device and is evaporated. A first condenser includes a first heat exchange passage that condenses the working fluid evaporated in the evaporator by a heat exchange with an outside first medium. A second condenser includes a second heat exchange passage that condenses the working fluid evaporated in the evaporator by a heat exchange with an outside second medium. A gas-phase passage causes the working fluid evaporated in the evaporator to flow to the first condenser and the second condenser. Furthermore, a first liquid-phase passage causes the working fluid condensed in the first condenser to flow to the evaporator, and a second liquid-phase passage causes the working fluid condensed in the second condenser to flow to the evaporator.
    Type: Application
    Filed: August 2, 2017
    Publication date: September 9, 2021
    Inventors: Takeshi YOSHINORI, Takashi YAMANAKA, Yoshiki KATO, Masayuki TAKEUCHI, Koji MIURA, Yasumitsu OMI
  • Patent number: 11029098
    Abstract: A device temperature regulator includes a forward passage in which a forward flow passage is formed to cause a working fluid to flow to a heat absorber from a heat radiator, and a backward passage in which a backward flow passage is formed to cause the working fluid to flow to the heat radiator from the heat absorber. In addition, the device temperature regulator includes a bubble generator, which generates a bubble in the working fluid collecting in the heat absorber and having a liquid phase, and a controller that causes the bubble generator to generate the bubble in a precondition is satisfied.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: June 8, 2021
    Assignee: DENSO CORPORATION
    Inventors: Masayuki Takeuchi, Yasumitsu Omi, Takashi Yamanaka, Yoshiki Kato, Takeshi Yoshinori, Koji Miura
  • Patent number: 11014430
    Abstract: A refrigeration cycle device has a compressor, a radiator, a decompressor, an evaporator, a heat medium cooling evaporator, a cooling target device, a detector, and a controller. The heat medium cooling evaporator cools a cooling heat medium by performing a heat exchange between the refrigerant decompressed in the decompressor and the cooling heat medium. The cooling heat medium cools the cooling target device. The detector detects a subcooling state of the cooling target device having a temperature lower than or equal to a reference temperature. Upon the detection of the subcooling state in the cooling target device by the detector, the controller increases the degree of superheat of the refrigerant flowing out of the heat medium cooling heat exchanger as compared to the degree of superheat of the refrigerant flowing out of the heat medium cooling heat exchanger when the detector does not detect the subcooling state.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: May 25, 2021
    Assignee: DENSO CORPORATION
    Inventors: Koji Miura, Yoshiki Kato, Masayuki Takeuchi, Nobuyuki Hashimura, Keigo Sato, Norihiko Enomoto, Kengo Sugimura, Ariel Marasigan
  • Patent number: 11003066
    Abstract: A projection display unit includes: an illumination optical system including one or more light sources; a reflective liquid crystal device that generates image light by modulating light from the illumination optical system, based on an input image signal; a polarizing beam splitter disposed on an optical path between the illumination optical system and the reflective liquid crystal device; a polarization compensation device disposed on an optical path between the polarizing beam splitter and the reflective liquid crystal device, and the polarization compensation device that provides a phase difference to light incident thereon to change a polarization state of the light; and a projection optical system that projects image light generated by the reflective liquid crystal device and then being incident thereon through an optical path, the optical path passing through the polarization compensation device and the polarizing beam splitter.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: May 11, 2021
    Assignee: Sony Corporation
    Inventor: Koji Miura
  • Patent number: 10996002
    Abstract: An evaporator evaporates a working fluid by heat from a battery. The evaporator includes at least one evaporation channel connected to the battery in a thermally conductive manner. The evaporator includes a supply channel connected to an upstream end of the evaporation channel, and supplies the working fluid in liquid phase from the supply channel to the evaporation channel. The evaporator includes an outflow channel connected with a downstream end of the evaporation channel, and discharges the working fluid. The outflow channel is disposed above the supply channel, and the supply channel is disposed at a position more insulated from the heat of the battery than the evaporation channel is.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: May 4, 2021
    Assignee: DENSO CORPORATION
    Inventors: Yasumitsu Omi, Takeshi Yoshinori, Masayuki Takeuchi, Koji Miura
  • Patent number: 10989447
    Abstract: A refrigeration cycle device includes a compressor, a condenser, a first decompressor, an outside heat exchanger, and an evaporator. A predetermined part of a refrigerant passage from the condenser to the first decompressor through which the refrigerant flows is a condenser outlet portion. A predetermined part of a refrigerant passage from the first decompressor to the outside heat exchanger through which the refrigerant flows is an outside heat exchanger inlet portion. A predetermined part of a refrigerant passage from the outside heat exchanger to the second decompressor through which the refrigerant flows is an outside heat exchanger outlet portion. A volume capacity of the condenser outlet portion is larger than a volume capacity of the outside heat exchanger inlet portion. According to the refrigeration cycle device, preferable coefficient of performance of cycle can be achieved in different operation modes.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: April 27, 2021
    Assignee: DENSO CORPORATION
    Inventors: Koji Miura, Yoshiki Kato, Masayuki Takeuchi, Nobuyuki Hashimura, Keigo Sato, Norihiko Enomoto, Kengo Sugimura, Ariel Marasigan
  • Publication number: 20210110162
    Abstract: The operation sequence identification device identifies an operation sequence including a series of individual operations. The operation sequence identification device includes an communication circuit that acquires first sensing information indicating the position of a moving object in an operation area in chronological order and plural pieces of second sensing information indicating surrounding environment states at different positions in the operation area in chronological order, and a control circuit that specifies the order of the series of individual operations based on the first sensing information and that identifies the operation content of each of the series of individual operations based on the second sensing information.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Inventors: Koji MIURA, Hidehiko SHIN
  • Patent number: 10950909
    Abstract: A device temperature regulator is provided with a gas passage part that guides a gaseous working fluid evaporated in a device heat exchanger to a condenser, and a liquid passage part that guides a liquid working fluid condensed in the condenser to the device heat exchanger. The device temperature regulator is provided with a supply amount regulator that increases or decreases a supply amount of the liquid working fluid supplied to the device heat exchanger. The supply amount regulator decreases the supply amount of the liquid working fluid to the device heat exchanger such that a liquid surface is formed in a state where the gaseous working fluid is positioned at a lower side lower than a heat exchanging portion exchanging heat with a temperature regulation target device in the device heat exchanger, when a condition for keeping the temperature regulation target device at a temperature is satisfied.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: March 16, 2021
    Assignee: DENSO CORPORATION
    Inventors: Koji Miura, Takashi Yamanaka, Yasumitsu Omi, Yoshiki Kato, Masayuki Takeuchi, Takeshi Yoshinori
  • Patent number: 10940740
    Abstract: In a heat pump system, when a heat-shock determination portion determines that a difference between a coolant temperature in a coolant flow path and a coolant temperature in a heat source flow path is equal to or higher than a predetermined temperature, a flow-path switching portion mixes the respective coolants flowing through at least a bypass flow path and the heat source flow path together to flow into the coolant flow path.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: March 9, 2021
    Assignee: DENSO CORPORATION
    Inventors: Kengo Sugimura, Yoshiki Katoh, Masayuki Takeuchi, Koji Miura, Norihiko Enomoto, Keigo Satou, Ariel Marasigan, Nobuyuki Hashimura
  • Patent number: 10939079
    Abstract: A display apparatus of the present disclosure includes: a light source section that outputs a light beam of a plurality of predetermined colors; an image data processing section that generates a sub-frame image of a single color by dividing a unit frame into a plurality of sub-frames, on the basis of an input image signal, and generates a sub-frame image of a mixed color based on the image signals of at least two colors; a display device that modulates the light beam based on the sub-frame images generated by the image data processing section; and a light source control section that causes the light source section to output the light beam of the color corresponding to the sub-frame image of the single color, in a selected period, and causes the light source section to output the light beams of the at least two colors sequentially.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: March 2, 2021
    Assignee: Sony Corporation
    Inventors: Koji Miura, Takeshi Tanimoto, Keita Mori
  • Patent number: 10919364
    Abstract: The present disclosure provides a vehicle air-conditioning device in which cooperative work with a power source is appropriate, which is easy to follow when the power source is restarted, and which reduces a driving force of a compressor at the time of restarting the power source. The vehicle air-conditioning device is provided with a refrigeration cycle. The refrigeration cycle has a compressor that is driven by a power source which may stop temporarily. The refrigeration cycle provides a low temperature and/or a high temperature. A high-temperature system and/or a low-temperature system is provided as a thermal buffer. The refrigeration cycle is provided with electric expansion valves which can be fully closed. The vehicle air-conditioning device is also provided with a control device, which fully closes the electric expansion valves when the compressor is temporarily stopped and which controls the electric expansion valves to the previous opening position when the compressor is restarted.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: February 16, 2021
    Assignee: DENSO CORPORATION
    Inventors: Ariel Marasigan, Koji Miura, Yoshiki Kato
  • Patent number: 10910684
    Abstract: A first thermosiphon circuit includes a first evaporator configured to cool a first target device by a latent heat of evaporation of a working fluid that absorbs a heat from the first target device, and a first passage communicating with the first evaporator. A second thermosiphon circuit includes a second evaporator configured to cool a second target device by a latent heat of evaporation of a working fluid that absorbs a heat from the second target device, and a second passage communicating with the second evaporator. A main condenser includes a first heat exchanger provided in the first passage and a second heat exchanger provided in the second passage, and is configured to allow the working fluid flowing through the first heat exchanger, the working fluid flowing through the second heat exchanger, and a predetermined cold energy supply medium to exchange heat with each other.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: February 2, 2021
    Assignee: DENSO CORPORATION
    Inventors: Yasumitsu Omi, Takeshi Yoshinori, Masayuki Takeuchi, Koji Miura
  • Patent number: 10906141
    Abstract: A method for manufacturing a device temperature controller includes filling an inside of a circuit with working fluid by connecting a filling port of the circuit to a container that stores gas phase working fluid. The circuit constitutes a thermosiphon heat pipe and allows the working fluid to circulate in the circuit. In the filling, the working fluid inside the circuit is cooled by a cooling source. An inside temperature of the circuit is decreased to be lower than an inside temperature of the container, and thereby an inside pressure of the circuit is decreased to be lower than an inside pressure of the container.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: February 2, 2021
    Assignee: DENSO CORPORATION
    Inventors: Yasumitsu Omi, Takashi Yamanaka, Yoshiki Kato, Takeshi Yoshinori, Masayuki Takeuchi, Koji Miura
  • Patent number: 10899195
    Abstract: A refrigeration cycle device includes a high-pressure side heat exchanger, a low-pressure side heat exchanger, a temperature-adjustment target device to be temperature-adjusted with a high-pressure side refrigerant, an exterior heat exchanger exchanging heat between the high-pressure side refrigerant or a low-pressure side refrigerant and outside air, a switching portion configured to switch between a heat dissipation mode in which the high-pressure side refrigerant dissipates heat into the outside air in the exterior heat exchanger and a heat absorption mode in which the low-pressure side refrigerant absorbs heat from the outside air in the exterior heat exchanger, a cooling request operation portion, and a controller configured to control an operation of the switching portion to perform the heat absorption mode when the cooling request operation portion operates to request cooling of the air and the temperature-adjustment target device needs to be warmed up.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: January 26, 2021
    Assignee: DENSO CORPORATION
    Inventors: Koji Miura, Yoshiki Kato, Nobuyuki Hashimura, Ariel Marasigan
  • Patent number: 10895803
    Abstract: A first illumination device includes a light source that emits light having directivity, and a uniform illumination optical system including a first fly-eye lens that includes a plurality of lenses two-dimensionally arranged and allows light based on emitted light from the light source to pass through the first fly-eye lens. An illumination target region has a planar shape having a side extending along a direction substantially parallel to a long-axis direction or a short-axis direction of an intensity distribution shape of emitted light from the light source, and a periodic direction of an array of the lenses in the first fly-eye lens is inclined with respect to the long-axis direction or the short-axis direction.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: January 19, 2021
    Assignee: Sony Corporation
    Inventor: Koji Miura