Patents by Inventor Keita Inoue

Keita Inoue 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: 20210372317
    Abstract: An engine control apparatus includes an ignition control section and an injection control section. When the partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of a expansion stroke to initiate the SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes the injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. The energy of the preceding ignition is set to be higher when the in-cylinder pressure specified by the in-cylinder pressure specification section is high than when the in-cylinder pressure is low.
    Type: Application
    Filed: April 23, 2019
    Publication date: December 2, 2021
    Inventors: Kota MATSUMOTO, Tomonori URUSHIHARA, Keiji MARUYAMA, Masanari SUEOKA, Ryohei ONO, Yuji HARADA, Toru MIYAMOTO, Atsushi INOUE, Tatsuhiro TOKUNAGA, Takuya OHURA, Yusuke KAWAI, Tomohiro NISHIDA, Keita ARAI, Yodai YAMAGUCHI
  • Patent number: 11187179
    Abstract: A control apparatus for a compression-ignition type engine is applied to an engine capable of carrying out partial compression ignition combustion. When the partial compression ignition combustion is carried out, an ignition control section of the control apparatus causes an ignition plug to carry out: main ignition in which a spark is generated to initiate the SI combustion; and preceding ignition in which the spark is generated at an earlier time point than the main ignition. An injection control section causes the ignition plug to inject fuel in an intake stroke. The ignition control section sets energy of the preceding ignition to be lower than energy of the main ignition and causes the ignition plug to carry out the preceding ignition after the fuel injection in the intake stroke or an early period or a middle period of a compression stroke.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: November 30, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Kota Matsumoto, Tomonori Urushihara, Keiji Maruyama, Masanari Sueoka, Ryohei Ono, Yuji Harada, Toru Miyamoto, Atsushi Inoue, Tatsuhiro Tokunaga, Takuya Ohura, Yusuke Kawai, Tomohiro Nishida, Keita Arai, Yodai Yamaguchi
  • Publication number: 20210363935
    Abstract: The invention is provided with an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes an injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Timing of the preceding ignition is more advanced when a swirl flow is gentle than when the swirl flow is strong.
    Type: Application
    Filed: April 17, 2019
    Publication date: November 25, 2021
    Inventors: Kota MATSUMOTO, Tomonori URUSHIHARA, Keiji MARUYAMA, Masanari SUEOKA, Ryohei ONO, Yuji HARADA, Toru MIYAMOTO, Atsushi INOUE, Tatsuhiro TOKUNAGA, Takuya OHURA, Yusuke KAWAI, Tomohiro NISHIDA, Keita ARAI, Yodai YAMAGUCHI
  • Patent number: 11181078
    Abstract: A high-pressure pump includes a pressurizing chamber forming portion, a suction passage forming portion, a seat member, a valve member, a cylindrical member, a needle, a movable core, a biasing member, a fixed core, and a coil including a winding portion. The coil generates an attractive force between the fixed core and the movable core when the winding portion is energized. The coil includes an outer cylindrical surface and multiple inner cylindrical surfaces that have different diameters. The multiple inner cylindrical surfaces are arranged in order of increasing diameter in a direction toward a pressurizing chamber. The movable core has an end surface that faces the fixed core, and the end surface of the movable core is located between a center, in an axial direction, of a smallest diameter one of the plurality of inner cylindrical surfaces and a center, in an axial direction, of the outer cylindrical surface.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: November 23, 2021
    Assignee: DENSO CORPORATION
    Inventors: Keita Kurigami, Shinichiro Koshimoto, Yoshihito Suzuki, Hiroshi Inoue, Tatsumi Oguri, Keigo Ohata, Takayuki Makihara, Taiki Kukita
  • Publication number: 20210354954
    Abstract: An elevator car position detection device is provided capable of preventing erroneous detection of a metal object other than an object to be detected. The elevator car position detection device includes: an object to be detected provided in one of a hoistway and a car of an elevator, the object to be detected being formed of a magnetic body and having a slit-like opening; and a magnetic detection device provided in the other of the hoistway and the car of the elevator, the magnetic detection device being configured to detect a change in magnetic flux density according to the slit-like opening when facing the object to be detected.
    Type: Application
    Filed: May 10, 2017
    Publication date: November 18, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Keita MOCHIZUKI, Jin INOUE, Masahiro ISHIKAWA, Akihide SHIRATSUKI
  • Publication number: 20210356887
    Abstract: An image forming apparatus includes a fixing device and a cooling device provided on a side downstream of the fixing device with respect to a sheet feeding direction. The cooling device includes a first unit including a first belt and a first roller, a second unit including a second belt for forming a nip in cooperation with the first belt, a heat sink and a second roller, and a driving motor for rotating the first roller and the second roller. The second unit is movable between a contact position where the first belt and the second belt are in contact with each other so as to form the nip and a separated position where the first belt and the second belt are in separation from each other so as to release the nip.
    Type: Application
    Filed: April 13, 2021
    Publication date: November 18, 2021
    Inventors: Kenichi Tanaka, Keita Kondo, Yuki Inoue, Shingo Katano
  • Patent number: 11168639
    Abstract: A control apparatus for a compression-ignition type engine is applied to an engine capable of carrying out partial compression ignition combustion in which an air-fuel mixture is subjected to CI combustion by self-ignition. The control apparatus creates a lean A/F environment where an air-fuel ratio as a ratio between air and fuel in a cylinder exceeds 20 and is lower than 35, or a lean G/F environment where a gas air-fuel ratio as a ratio between entire gas and the fuel in the cylinder exceeds 18 and is lower than 50 and the air-fuel ratio substantially matches a stoichiometric air-fuel ratio. Prior to planned timing of the CI combustion, in the lean A/F environment or the lean G/F environment, the control apparatus causes an ignition plug to generate a spark and to generate a high-temperature portion.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: November 9, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Kota Matsumoto, Tomonori Urushihara, Keiji Maruyama, Masanari Sueoka, Ryohei Ono, Yuji Harada, Toru Miyamoto, Atsushi Inoue, Tatsuhiro Tokunaga, Takuya Ohura, Yusuke Kawai, Tomohiro Nishida, Keita Arai, Yodai Yamaguchi
  • Publication number: 20210286313
    Abstract: A drum cartridge including a photosensitive drum, a drum frame configured to retain the photosensitive drum and to accept a developing cartridge including a toner memory, which stores information concerning the developing cartridge, a first connector electrically connectable with the toner memory in the developing cartridge under a condition where the developing cartridge is attached to the drum frame, a relay board electrically connectable with the first connector, a second connector electrically connectable with a connector in an image forming apparatus and with the toner memory through the relay board, and a thermistor electrically connectable with the relay board, is provided.
    Type: Application
    Filed: June 2, 2021
    Publication date: September 16, 2021
    Applicant: Brother Kogyo Kabushiki Kaisha
    Inventors: Koji ABE, Keita Inoue
  • Patent number: 11111871
    Abstract: Provided is an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes an injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Ignition timing of the preceding ignition is set to be more advanced when an in-cylinder temperature specified by an in-cylinder temperature specification section is high than when the in-cylinder temperature is low.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: September 7, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Kota Matsumoto, Tomonori Urushihara, Keiji Maruyama, Masanari Sueoka, Ryohei Ono, Yuji Harada, Toru Miyamoto, Atsushi Inoue, Tatsuhiro Tokunaga, Takuya Ohura, Yusuke Kawai, Tomohiro Nishida, Keita Arai, Yodai Yamaguchi
  • Publication number: 20210271182
    Abstract: A high-voltage electrical circuit board is located in a first region that is a region at one side of photosensitive drums in a first direction and outside of the photosensitive drums in the first direction. A first motor drives a conveyance mechanism. A second motor is located in a second region and drives each photosensitive drum. A third motor is located in the second region and drives each developing roller to rotate and to drive a separation mechanism configured to individually move the developing rollers between a contact position and a separation position. A control board is located in the second region. The control board includes a controller configured to control a first applying circuit, the first motor, the second motor, and the third motor. The first motor, the second motor, the third motor, and the control board are located at different positions from one another in the second region.
    Type: Application
    Filed: February 22, 2021
    Publication date: September 2, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Osamu TAKAHASHI, Masaaki WAKIZAKA, Kentaro AOYAMA, Shunsuke HACHIYA, Toshinori ARAKI, Keita INOUE, Shinta SUGIURA
  • Patent number: 11105255
    Abstract: The invention is provided with an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes an injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Ignition timing of the preceding ignition is set to be more retarded when fuel concentration specified by a fuel concentration specification section is low than when the fuel concentration is high.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: August 31, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Kota Matsumoto, Tomonori Urushihara, Keiji Maruyama, Masanari Sueoka, Ryohei Ono, Yuji Harada, Toru Miyamoto, Atsushi Inoue, Tatsuhiro Tokunaga, Takuya Ohura, Yusuke Kawai, Tomohiro Nishida, Keita Arai, Yodai Yamaguchi
  • Patent number: 11061359
    Abstract: A drum cartridge including a photosensitive drum, a drum frame configured to retain the photosensitive drum and to accept a developing cartridge including a toner memory, which stores information concerning the developing cartridge, a first connector electrically connectable with the toner memory in the developing cartridge under a condition where the developing cartridge is attached to the drum frame, a relay board electrically connectable with the first connector, a second connector electrically connectable with a connector in an image forming apparatus and with the toner memory through the relay board, and a thermistor electrically connectable with the relay board, is provided.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: July 13, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Koji Abe, Keita Inoue
  • Publication number: 20210096498
    Abstract: An image forming apparatus includes a controller, a main body frame, a cartridge and a display. The cartridge includes a memory, a cartridge data terminal and a cartridge detection terminal. The controller includes a main body data terminal and a main body detection terminal. The main body data terminal is electrically connected to the cartridge data terminal. The main body detection terminal is electrically connected to the cartridge detection terminal in the case where the cartridge is attached to the main body frame. The controller is configured to perform determining whether the main body detection terminal and the cartridge detection terminal are electrically connected with each other. The controller is configured to perform displaying a determination result of the determining whether the main body detection terminal and the cartridge detection terminal are electrically connected with each other on the display.
    Type: Application
    Filed: September 28, 2020
    Publication date: April 1, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shinta SUGIURA, Keita INOUE, Tatsuro YOKOI, Seiya SATO, Osamu TAKAHASHI, Toshinori ARAKI, Masaaki W AKIZAKA, Koji AKAGI
  • Publication number: 20210072696
    Abstract: A drum cartridge including a photosensitive drum, a drum frame configured to retain the photosensitive drum and to accept a developing cartridge including a toner memory, which stores information concerning the developing cartridge, a first connector electrically connectable with the toner memory in the developing cartridge under a condition where the developing cartridge is attached to the drum frame, a relay board electrically connectable with the first connector, a second connector electrically connectable with a connector in an image forming apparatus and with the toner memory through the relay board, and a thermistor electrically connectable with the relay board, is provided.
    Type: Application
    Filed: September 8, 2020
    Publication date: March 11, 2021
    Applicant: Brother Kogyo Kabushiki Kaisha
    Inventors: Koji ABE, Keita INOUE
  • Publication number: 20210041831
    Abstract: An image forming apparatus includes a main body, a drum cartridge removably attached to the main body, and a belt unit removably attached to the main body. The main body includes a drum power supply, a belt power supply, and a controller configured to start supplying power from the drum power supply to a drum memory of the drum cartridge, start supplying power from the belt power supply to a belt memory of the belt unit, stop supplying the power from the drum power supply to the drum memory after starting supplying the power from the drum power supply to the drum memory, and stop supplying the power from the belt power supply to the belt memory after starting supplying the power from the belt power supply to the belt memory.
    Type: Application
    Filed: August 6, 2020
    Publication date: February 11, 2021
    Applicant: Brother Kogyo Kabushiki Kaisha
    Inventors: Toshinori ARAKI, Tatsuro YOKOI, Seiya SATO, Shinta SUGIURA, Koji AKAGI, Masaaki WAKIZAKA, Keita INOUE, Osamu TAKAHASHI
  • Publication number: 20200119511
    Abstract: In various embodiments, laser devices feature means, such as fasteners, for attaching a laser package to a cooling plate, which allow motion of the laser package in response to thermal cycles resulting from operation of a beam emitter therewithin. Embodiments of the invention additionally or instead include laser devices featuring segmented barrier layers for electrically isolating the laser package from the cooling plate.
    Type: Application
    Filed: October 10, 2019
    Publication date: April 16, 2020
    Inventors: Bryan Lochman, Matthew Sauter, Michael Denninger, Bien Chann, Keita Inoue, John Roethle
  • Publication number: 20200083665
    Abstract: A laser oscillation device (1) includes a plurality of laser modules (10,11) configured to emit light beams; a beam multiplexer configured to combine the light beams emitted from the laser modules (10,11); and a power supply configured to supply power to the laser modules (10,11). The laser modules each include a plurality of laser diodes (40); a cooling plate (41) configured to cool the laser diodes (40); a pipe configured to carry a coolant to the cooling plate; a pressure sensor (27) and a flow sensor (28) configured to detect the pressure and the flow, respectively, of the coolant flowing through the pipe; and an adjustment mechanism (25) configured to adjust the pressure and the flow of the coolant based on the value of the pressure sensor (27) and the value of the flow sensor (28).
    Type: Application
    Filed: November 14, 2019
    Publication date: March 12, 2020
    Inventors: TOMOHIRO MOCHIYAMA, MAKOTO RYUDO, KEITA INOUE
  • Patent number: 10544820
    Abstract: A washer-equipped screw is provided with a screw body, a flat washer, and a rubber washer. The screw body includes a cylindrical portion between a shaft portion on which a screw groove is formed and a head portion. A hole in the flat washer is inserted through the cylindrical portion so as to be adjacent to the head portion. A hole in the rubber washer is inserted through the cylindrical portion and positioned on a shaft portion side of the flat washer. The cylindrical portion is provided with a projection for engagingly locking the flat washer. An inner edge of the flat washer is caught by the projection, whereby the flat washer is prevented from detaching.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: January 28, 2020
    Assignee: DENSO CORPORATION
    Inventors: Takeshi Fujihara, Satoshi Iguchi, Yuya Okuda, Shuichi Iwata, Jun Asada, Keita Inoue, Yoshihiro Ohta
  • Publication number: 20200017274
    Abstract: A substrate housing structure includes a container, a cover, a bag, and a band. The container holds substrates therein. The over covers an opening of the container. The bag is disposed in a space between. the cover and a storing object including at least the substrates that are stacked. The bag is filled with flowable matter. The band is wrapped around the container and the cover.
    Type: Application
    Filed: June 21, 2019
    Publication date: January 16, 2020
    Inventor: Keita Inoue
  • Patent number: 10475844
    Abstract: A photoelectric conversion device includes a generation circuit and a controller. The generation circuit generates an image signal according to an intensity of light being input. The controller controls the generation circuit to generate a dark-time image signal equivalent to an image signal generated by the generation circuit without exposure to external light.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: November 12, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Keita Inoue, Masamoto Nakazawa, Hiroki Shirado