Patents by Inventor Takashi Toyooka

Takashi Toyooka 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: 11448453
    Abstract: This refrigeration device, which cools by means of a refrigeration cycle using a refrigerant, is provided with: a door; a box which has a peripheral edge that is opposite of the outer peripheral portion of the door when the door is in a closed state, and which is internally cooled by the refrigerant; and multiple pipes which are arranged along the surface of the peripheral edge and which circulate a refrigerant warmed by the compression action of a compressor.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: September 20, 2022
    Assignee: PHC HOLDINGS CORPORATION
    Inventors: Takashi Toyooka, Tadashi Okada, Jun Yoshioka
  • Patent number: 11333429
    Abstract: This refrigeration device is provided with: an evaporator configuring a refrigeration circuit; a cascade condenser configuring the refrigeration circuit; and a thermal insulation board arranged between the evaporator and the cascade condenser.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: May 17, 2022
    Assignee: PHC HOLDINGS CORPORATION
    Inventors: Takashi Toyooka, Eiichi Mori, Jun Yoshioka
  • Publication number: 20220146185
    Abstract: This refrigeration apparatus comprises: an inner box having a top surface and side surfaces; and an evaporator constituted by bent pipes comprising a top surface portion in contact with the top surface, an upper side-surface portion in contact with the side surfaces, and a lower side-surface portion in contact with the side surfaces below the upper-side surface portion. The pipes constituting the upper side-surface portion are more densely arranged than the pipes constituting the lower side-surface portion. The total length of the pipes constituting the top surface portion and the upper side-surface portion is 62.5% or more of the lengths of the pipes in contact with the inner box.
    Type: Application
    Filed: January 20, 2022
    Publication date: May 12, 2022
    Inventors: Takashi TOYOOKA, Minoru SUTO, Fumihiro ASAYAMA
  • Publication number: 20220136752
    Abstract: This refrigeration device comprises: a high temperature side refrigerant circuit in which a high temperature side refrigerant circulates; a low temperature side refrigerant circuit in which a low temperature side refrigerant circulates; and a cascade heat exchanger that cools the low temperature side refrigerant with the high temperature side refrigerant. In the low temperature side refrigerant circuit, a low temperature side decompressor is disposed downstream of the cascade heat exchanger and a temperature sensor is installed in a piping portion between the cascade heat exchanger and the low temperature side decompressor.
    Type: Application
    Filed: January 14, 2022
    Publication date: May 5, 2022
    Inventors: Takashi TOYOOKA, Minoru SUTO
  • Publication number: 20200377775
    Abstract: This cold storage device comprises a compressor, a condenser, a throttling device, and an evaporator, which form a cooling medium circuit through which a mixture of a cooling medium, a lubricating oil, and an oil carrier circulates. The oil carrier molecular structure includes a carbon double bond and a chlorine atom bonded to one carbon atom forming the carbon double bond.
    Type: Application
    Filed: August 17, 2020
    Publication date: December 3, 2020
    Inventor: Takashi TOYOOKA
  • Patent number: 10770029
    Abstract: A display device includes a solid-state light source driven by a PWM signal, a light modulation device that modulates light emitted by the solid-state light source in response to an image signal, and a signal output unit that determines a duty ratio and a current value of the PWM signal in response to brightness of an image represented by the image signal. The signal output unit outputs a PWM signal having a predetermined first current value to the solid-state light source if the duty ratio is equal to or more than a predetermined first threshold value and outputs a PWM signal having a current value less than the first current value to the solid-state light source if the duty ratio is less than the first threshold value.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: September 8, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takashi Toyooka
  • Patent number: 10731898
    Abstract: A binary refrigerating apparatus employs a refrigerant composition that has a small global-warming potential (GWP) and can be used as a refrigerant capable of achieving a low temperature of ?80° C. A refrigerant composition used as a low-temperature-side refrigerant is a refrigerant mixture including a non-azeotropic mixture in which 20% by mass or less of carbon dioxide (R744) is mixed to difluoroethylene (R1132a). A refrigerant composition used as a high-temperature-side refrigerant is a combination of: a non-azeotropic mixture comprising the refrigerant group of difluoromethane (R32), pentafluoroethane (R125), 1,1,1,2-tetrafluoroethane (R134a) and 1,1,3-trifluoro ethane (R143a); and 1,1,1,2,3-pentafluoropentene (HFO-1234ze), having a global-warming potential (GWP) of 1500 or less.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: August 4, 2020
    Assignee: PHC HOLDINGS CORPORATION
    Inventors: Jiro Yuzawa, Takashi Toyooka
  • Patent number: 10681319
    Abstract: Projectors include a first projector that projects a first image and a second projector that projects a second image. The first projector includes a first control section that corrects the first image based on a first captured image produced by capturing an image of the range containing at least part of the first image and part of the second image and with reference to a target area contained in the range over which the first captured image is captured, and the second projector includes a second control section that corrects the second image based on a second captured image produced by capturing an image of the range containing part of the first image and at least part of the second image and with reference to the target area contained in the range over which the second captured image is captured.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: June 9, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takumi Oike, Takashi Toyooka
  • Patent number: 10627962
    Abstract: A projector includes an image forming unit, a projection unit, an image capturing unit, and a detection unit. The image forming unit generates projection image data based on a video signal. The projection unit projects a projection image based on the projection image data, on a projection surface. The image capturing unit generates captured image data by capturing an image of the projection surface for each line or for each block. The detection unit detects an object other than the projection image, which included in the captured image data, based on the captured image data and the projection image data. The projection unit switches projection image for each line or for each block, by scanning. The image capturing unit starts sequential image capturing from a region of the projection surface, in which switching is completed, during a period when at least switching of the projection image is performed.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: April 21, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takashi Toyooka, Shingo Wakimoto, Akio Murakami
  • Patent number: 10598415
    Abstract: A refrigeration apparatus includes: a refrigerant circuit that condenses a refrigerant discharged from a compressor, decompresses the refrigerant with a capillary tube, and causes the refrigerant to evaporate in an evaporator to exhibit a refrigeration effect, wherein, as the refrigerant in the refrigerant circuit, a mixed refrigerant containing a first refrigerant having a boiling point in an ultralow temperature range of not less than ?89.0° C. and not more than ?78.1° C. and carbon dioxide (R744) is enclosed, and a heater that heats at least a portion of a suction pipe through which the refrigerant that returns from the evaporator to the compressor passes is provided.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: March 24, 2020
    Assignee: PHC HOLDINGS CORPORATION
    Inventor: Takashi Toyooka
  • Publication number: 20200088455
    Abstract: This refrigeration device, which cools by means of a refrigeration cycle using a refrigerant, is provided with: a door; a box which has a peripheral edge that is opposite of the outer peripheral portion of the door when the door is in a closed state, and which is internally cooled by the refrigerant; and multiple pipes which are arranged along the surface of the peripheral edge and which circulate a refrigerant warmed by the compression action of a compressor.
    Type: Application
    Filed: November 22, 2019
    Publication date: March 19, 2020
    Inventors: Takashi TOYOOKA, Tadashi OKADA, Jun YOSHIOKA
  • Publication number: 20190376737
    Abstract: This refrigeration device is provided with: an evaporator configuring a refrigeration circuit; a cascade condenser configuring the refrigeration circuit; and a thermal insulation board arranged between the evaporator and the cascade condenser.
    Type: Application
    Filed: August 21, 2019
    Publication date: December 12, 2019
    Inventors: Takashi TOYOOKA, Eiichi Mori, Jun Yoshioka
  • Patent number: 10412351
    Abstract: A projector includes a light-emitting element that outputs light of a first wavelength band which is in a first polarization state; a retardation plate that converts a portion of the light into a second polarization state; a polarization separation element that separates the light into a first flux of light in the first polarization state and a second flux of light in a second polarization state; a phosphor, which outputs a third flux of light of a second wavelength band; an optical modulator that modulates the light in accordance with a video signal; a light-emitting element control unit that controls brightness of the light-emitting element in accordance with brightness information; and a retardation plate control unit that controls a rotation angle of the retardation plate in accordance with the brightness information.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: September 10, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takashi Toyooka, Tatsuya Iguchi
  • Publication number: 20190268579
    Abstract: A target color is set on the basis of a first captured image obtained by capturing, with an imaging section, at least apart of a first image projected by a projection optical system of a projector. First correction data for correcting a color of a projected image of another projector to the target color is calculated on the basis of a second captured image obtained by capturing, with the imaging section, at least a part of a second image projected by the projection optical system of the other projector.
    Type: Application
    Filed: May 9, 2019
    Publication date: August 29, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takumi OIKE, Takashi TOYOOKA, Shiki FURUI
  • Patent number: 10341626
    Abstract: A target color is set on the basis of a first captured image obtained by capturing, with an imaging section, at least a part of a first image projected by a projection optical system of a projector. First correction data for correcting a color of a projected image of another projector to the target color is calculated on the basis of a second captured image obtained by capturing, with the imaging section, at least a part of a second image projected by the projection optical system of the other projector.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: July 2, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takumi Oike, Takashi Toyooka, Shiki Furui
  • Patent number: 10321108
    Abstract: A projector which modulates light emitted from a solid light source by an optical modulator and projects an image includes, a division unit which divides first light beams forming the image, a diffusion plate which diffuses one of the first light beams divided by the division unit, a first sensor which receives the light beams diffused by the diffusion plate, a second sensor which receives second light beams having a full width at the half maximum of a spectrum different from the first light beams and forming the image, an adjustment unit which adjusts a ratio of the first light beams to the second light beams according to a detection result of the first sensor and a detection result of the second sensor.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: June 11, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tatsuya Iguchi, Takashi Toyooka
  • Publication number: 20180295332
    Abstract: A projector includes a light-emitting element that outputs light of a first wavelength band which is in a first polarization state; a retardation plate that converts a portion of the light into a second polarization state; a polarization separation element that separates the light into a first flux of light in the first polarization state and a second flux of light in a second polarization state; a phosphor, which outputs a third flux of light of a second wavelength band; an optical modulator that modulates the light in accordance with a video signal; a light-emitting element control unit that controls brightness of the light-emitting element in accordance with brightness information; and a retardation plate control unit that controls a rotation angle of the retardation plate in accordance with the brightness information.
    Type: Application
    Filed: June 15, 2018
    Publication date: October 11, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi TOYOOKA, Tatsuya IGUCHI
  • Publication number: 20180275832
    Abstract: A projector includes an image forming unit, a projection unit, an image capturing unit, and a detection unit. The image forming unit generates projection image data based on a video signal. The projection unit projects a projection image based on the projection image data, on a projection surface. The image capturing unit generates captured image data by capturing an image of the projection surface for each line or for each block. The detection unit detects an object other than the projection image, which included in the captured image data, based on the captured image data and the projection image data. The projection unit switches projection image for each line or for each block, by scanning. The image capturing unit starts sequential image capturing from a region of the projection surface, in which switching is completed, during a period when at least switching of the projection image is performed.
    Type: Application
    Filed: March 8, 2018
    Publication date: September 27, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi TOYOOKA, Shingo WAKIMOTO, Akio MURAKAMI
  • Publication number: 20180278901
    Abstract: A display device includes a solid-state light source driven by a PWM signal, a light modulation device that modulates light emitted by the solid-state light source in response to an image signal, and a signal output unit that determines a duty ratio and a current value of the PWM signal in response to brightness of an image represented by the image signal. The signal output unit outputs a PWM signal having a predetermined first current value to the solid-state light source if the duty ratio is equal to or more than a predetermined first threshold value and outputs a PWM signal having a current value less than the first current value to the solid-state light source if the duty ratio is less than the first threshold value.
    Type: Application
    Filed: May 29, 2018
    Publication date: September 27, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Takashi TOYOOKA
  • Publication number: 20180224166
    Abstract: A binary refrigerating apparatus employs a refrigerant composition that has a small global-warming potential (GWP) and can be used as a refrigerant capable of achieving a low temperature of ?80° C. A refrigerant composition used as a low-temperature-side refrigerant is a refrigerant mixture including a non-azeotropic mixture in which 20% by mass or less of carbon dioxide (R744) is mixed to difluoroethylene (R1132a). A refrigerant composition used as a high-temperature-side refrigerant is a combination of: a non-azeotropic mixture comprising the refrigerant group of difluoromethane (R32), pentafluoroethane (R125), 1,1,1,2-tetrafluoroethane (R134a) and 1,1,3-trifluoro ethane (R143a); and 1,1,1,2,3-pentafluoropentene (HFO-1234ze), having a global-warming potential (GWP) of 1500 or less.
    Type: Application
    Filed: March 30, 2018
    Publication date: August 9, 2018
    Inventors: Jiro YUZAWA, Takashi TOYOOKA