Patents by Inventor Keita Imai

Keita Imai 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: 20240123654
    Abstract: Provided is a separation and recovery apparatus for continuously separating and recovering, from a resin mixture containing a resin containing a hydrolyzable polymer and a resin containing a nonhydrolyzable polymer, a hydrolytic component a of the hydrolyzable polymer A and the nonhydrolyzable polymer B, the apparatus including: a crushing unit that crushes the resin mixture a melting/discharging unit that melts a crushed product obtained by the crushing unit to form a fluid and discharges the fluid at a high pressure; and a hydrothermal reaction treatment unit that continuously subjects the fluid discharged from the melting/discharging unit to a hydrothermal reaction treatment, wherein, in the melting/discharging unit, the hydrolyzable polymer A is hydrolyzed, and the hydrolytic component a thereof is dissolved and transferred into water permeating a sintered alloy diaphragm, thereby separating the nonhydrolyzable polymer B.
    Type: Application
    Filed: December 15, 2023
    Publication date: April 18, 2024
    Applicant: TOPPAN INC.
    Inventors: Masaru WATANABE, Aritomo YAMAGUCHI, Osamu SATO, Yuuma IRISA, Akira TAKAMA, Kousuke NISHIMURA, Hiroki KUJIRAOKA, Hideki MIYAZAKI, Keita AKIMOTO, Takuya TAKAHATA, Daisuke KUGIMOTO, Shingo KOUDA, Satoshi HAMURA, Takahiro IMAI, Yumiko OMORI, Manabu KAWA
  • Publication number: 20230301602
    Abstract: An information processing device includes an acquisition unit configured to acquire subject information including at least one of information about a patient and information bout a medical practitioner, measurement information about a physiological parameter of the patient, and prediction information about the physiological parameter of the patient predicted by the medical practitioner, an analyzing unit configured to analyze a relationship between the subject information and a degree of divergence between the prediction information and the measurement information, and an output that configured to output analysis information representing the relationship between the subject information and the degree of divergence.
    Type: Application
    Filed: March 10, 2023
    Publication date: September 28, 2023
    Inventors: Minori KOSUGE, Kiyoshi TAKEDA, Nanami YAMAMOTO, Keita IMAI
  • Publication number: 20230016650
    Abstract: An upper housing is provided between a fixed core and a housing opposite to a nozzle hole with respect to a coil. The upper housing is configured to form a magnetic circuit with the fixed core and the housing. The upper housing has a first tapered surface formed on an outer peripheral wall and a first cylindrical surface formed on an inner peripheral wall. The housing has a second tapered surface that radially faces the first tapered surface. The fixed core has a second cylindrical surface that radially faces the first cylindrical surface.
    Type: Application
    Filed: September 28, 2022
    Publication date: January 19, 2023
    Inventors: Yuunosuke HARADA, Kouichi MOCHIZUKI, Keita IMAI, Masaru MOTOKI, Jun YAMASHITA, Kouta MAEKAWA
  • Publication number: 20220356860
    Abstract: A fuel injection valve includes a nozzle, a housing, a needle, and a throttle portion. The nozzle includes an injection hole through which fuel is injected and a valve seat formed around the injection hole. The nozzle includes an injection hole through which fuel is injected and a valve seat formed around the injection hole. The housing has a fuel flow path through which the fuel to the injection hole flows. One end of the needle is configured to open and close the injection hole by being separated from the valve seat or abutted on the valve seat. The throttle portion is provided upstream with respect to the valve seat in a fuel flow direction.
    Type: Application
    Filed: July 21, 2022
    Publication date: November 10, 2022
    Inventors: Keita IMAI, Atsushi HONDA
  • Patent number: 11493009
    Abstract: An injection hole body has injection holes to inject fuel. A valve body forms a fuel passage with an inner surface of the injection hole body to communicate with inflow ports of the injection holes. The valve body opens and closes the fuel passage by being seated on and unseated from a seating surface of the injection hole body. An inflow port gap distance is a gap between the valve body and the inflow ports along a center axis of the valve body. An inter-injection hole distance is a distance between inflow ports, which are adjacent to each other, among the inflow ports placed around the center axis. The inter-injection hole distance is smaller than the inflow port gap distance in a state where the valve body is unseated from the seating surface and is at a farthest position in its movable range.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: November 8, 2022
    Assignee: DENSO CORPORATION
    Inventor: Keita Imai
  • Patent number: 11319911
    Abstract: A fuel injection valve includes: a coil; a stationary core to generate a magnetic force; a movable structure including a moving core and a valve body and internally having a movable flow passage; and a body that internally accommodates the movable structure and internally has a part of the flow passage. The movable structure includes a throttle portion at which a passage area of the movable flow passage is partially throttled. The flow passage includes a throttle flow passage defined by the throttle portion and a separate flow passage between the movable structure and the body. A passage area of the separate flow passage is smaller than a passage area of the throttle flow passage. A position of the separate flow passage in a direction perpendicular to a moving direction of the movable structure is different from an outermost peripheral position of the moving core.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: May 3, 2022
    Assignee: DENSO CORPORATION
    Inventors: Makoto Saizen, Shuichi Matsumoto, Keita Imai, Moriyasu Goto
  • Patent number: 11248571
    Abstract: A fuel injection valve includes: a movable arrangement that is coupled to a movable core and a needle while a movable flow passage, which forms a part of a flow passage of the fuel injection valve, is formed at an inside of the movable arrangement; and a valve main body that receives the movable arrangement. The movable arrangement has: a first flow-restricting portion that reduces a cross-sectional area of a portion of the movable flow passage; and a second flow-restricting portion that is spaced away from the first flow-restricting portion and reduces a cross-sectional area of another portion of the movable flow passage to a cross-sectional area that is equal to or larger than a cross-sectional area of the first flow-restricting portion. A distance between the first flow-restricting portion and the second flow-restricting portion is larger than an equivalent diameter of the cross-sectional area of the second flow-restricting portion.
    Type: Grant
    Filed: April 2, 2021
    Date of Patent: February 15, 2022
    Assignee: DENSO CORPORATION
    Inventors: Keita Imai, Takanori Kito
  • Publication number: 20210222656
    Abstract: A fuel injection valve includes: a movable arrangement that is coupled to a movable core and a needle while a movable flow passage, which forms a part of a flow passage of the fuel injection valve, is formed at an inside of the movable arrangement; and a valve main body that receives the movable arrangement. The movable arrangement has: a first flow-restricting portion that reduces a cross-sectional area of a portion of the movable flow passage; and a second flow-restricting portion that is spaced away from the first flow-restricting portion and reduces a cross-sectional area of another portion of the movable flow passage to a cross-sectional area that is equal to or larger than a cross-sectional area of the first flow-restricting portion. A distance between the first flow-restricting portion and the second flow-restricting portion is larger than an equivalent diameter of the cross-sectional area of the second flow-restricting portion.
    Type: Application
    Filed: April 2, 2021
    Publication date: July 22, 2021
    Inventors: Keita Imai, Takanori Kito
  • Publication number: 20210071726
    Abstract: A friction plate (11) includes a plate (1A) with a disc shape and a friction material (F1, F2) that is fixed to aside face (1a) of the plate (1A). The friction material (F1, F2) is disposed so that one or both of an inner peripheral side and an outer peripheral side is nonuniform in an inner and outer peripheral direction with respect to a circumferential direction around a center (CT1) of the plate (1A). Thus, there is an increase in the amount of lubrication oil that is fed to a surface of friction material segments (F1, F2) and there is an increase in a separation force in an axial direction between a friction plate (11) and a separator plate or an end plate.
    Type: Application
    Filed: May 23, 2018
    Publication date: March 11, 2021
    Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaki YOSHIDA, Tomoo ATARASHI, Junji MATSUSHITA, Takuya KOMATSU, Yusuke TAKATSUKA, Kuniyoshi TAKEDA, Kenichi KIZAWA, Yusuke KOJIMA, Keita IMAI, Koichi OKUDA, Atsushi TABATA, Koji HAYASHI, Kazuyuki SHIIBA, Hiromichi KIMURA
  • Patent number: 10724487
    Abstract: An injection hole body has multiple injection holes for injecting fuel. A valve body is unseated from and seated on a seating surface of the injection hole body. The injection hole body and the valve body form a specific space therebetween to communicate with inflow ports of the injection holes. A virtual region is surrounded by multiple straight lines. The straight lines connect portions of peripheral edges of the inflow ports, which are closest to a center axis of the valve body in the radial direction. A center volume is formed by extending the virtual region from the injection hole body toward the valve body along the center axis. A total injection hole volume is a total volume of the injection holes. The total injection hole volume is larger than the center volume in a state where the valve body is seated on the seating surface.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: July 28, 2020
    Assignee: DENSO CORPORATION
    Inventor: Keita Imai
  • Patent number: 10668800
    Abstract: A vehicle drive unit to prevent a single phase lock of a motor as a prime mover to limit damage is provided. The drive unit includes: a first transmission route to deliver drive force of an engine to drive wheels; and a second transmission route to deliver drive force of a motor to the drive wheels. The second transmission route comprises an intermediate shaft that transmits the drive force of the motor to the first transmission route. A fluid coupling is disposed between the motor and the intermediate shaft. A lockup clutch is arranged parallel to the fluid coupling between the motor and the intermediate shaft.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: June 2, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tatsuya Imamura, Atsushi Tabata, Koichi Okuda, Keita Imai
  • Patent number: 10634103
    Abstract: In a fuel injection valve, a movable structure includes: a movable core that includes a first attractive surface and a second attractive surface, which are configured to be attracted toward at least one stationary core when a coil is energized; and an elongated shaft member that has a length, which is measured in a moving direction of the movable structure and is larger than a length of the movable core, which is measured in the moving direction. A modulus of longitudinal elasticity of the elongated shaft member is larger than a modulus of longitudinal elasticity of the movable core.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: April 28, 2020
    Assignee: DENSO CORPORATION
    Inventor: Keita Imai
  • Patent number: 10634084
    Abstract: A fuel injection controller is applied to a fuel injector injecting fuel to be combusted in an internal combustion engine by an open-valve operation of the valve body according to an electromagnetic suction force generated by an energization of a coil. The fuel injection controller controls an injection state of the fuel injector by controlling a coil current flowing through the coil. The fuel injection controller includes an increasing control portion which increases the coil current to a first target value, a holding control portion which holds the coil current increased by the increasing control portion to the first target value, and a changing portion which changes the first target value according to the operation state of the internal combustion engine.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: April 28, 2020
    Assignee: DENSO CORPORATION
    Inventors: Keita Imai, Eiji Ito
  • Patent number: 10625592
    Abstract: A control apparatus for a vehicular power transmitting system includes a drive mode setting portion configured to select a first reverse drive mode of the vehicle to be established with an engaging action of the first coupling element, and a required vehicle drive force determining portion configured to determine whether a degree of operation of an accelerator pedal of the vehicle during reverse driving of the vehicle is higher than a predetermined threshold value. The drive mode setting portion selects the first reverse drive mode when the required vehicle drive force determining portion has determined that the degree of operation of the accelerator pedal during the reverse driving of the vehicle is higher than the predetermined threshold value.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: April 21, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keita Imai, Koichi Okuda, Tatsuya Imamura, Atsushi Tabata
  • Patent number: 10598114
    Abstract: A fuel injection controller includes an increase control portion applying the boost voltage to the coil to increase a coil current to a first target value, and a constant current control portion applying a voltage to the coil to hold the coil current to a second target value. A threshold is an energization time period that is necessary to reach a boundary point between a seat throttle area of a property line and an injection-port throttle area of the property line from an energization start time point. An initial-current applied time period is from the energization start time point that the boost voltage starts to be applied to the coil to a time point that the coil current is decreased to the second target value. The increase control portion controls the coil current such that the initial-current applied time period is less than the threshold.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: March 24, 2020
    Assignee: DENSO CORPORATION
    Inventor: Keita Imai
  • Publication number: 20190360443
    Abstract: In a fuel injection valve, a movable structure includes: a movable core that includes a first attractive surface and a second attractive surface, which are configured to be attracted toward at least one stationary core when a coil is energized; and an elongated shaft member that has a length, which is measured in a moving direction of the movable structure and is larger than a length of the movable core, which is measured in the moving direction. A modulus of longitudinal elasticity of the elongated shaft member is larger than a modulus of longitudinal elasticity of the movable core.
    Type: Application
    Filed: August 13, 2019
    Publication date: November 28, 2019
    Inventor: Keita IMAI
  • Publication number: 20190331076
    Abstract: A fuel injection valve includes: a coil; a stationary core to generate a magnetic force; a movable structure including a moving core and a valve body and internally having a movable flow passage; and a body that internally accommodates the movable structure and internally has a part of the flow passage. The movable structure includes a throttle portion at which a passage area of the movable flow passage is partially throttled. The flow passage includes a throttle flow passage defined by the throttle portion and a separate flow passage between the movable structure and the body. A passage area of the separate flow passage is smaller than a passage area of the throttle flow passage. A position of the separate flow passage in a direction perpendicular to a moving direction of the movable structure is different from an outermost peripheral position of the moving core.
    Type: Application
    Filed: July 11, 2019
    Publication date: October 31, 2019
    Inventors: Makoto SAIZEN, Shuichi MATSUMOTO, Keita IMAI, Moriyasu GOTO
  • Publication number: 20190277236
    Abstract: An injection hole body has an injection hole to inject fuel for causing combustion in an internal combustion engine. A valve body is unseated from and seated on a seating surface of the injection hole body. The injection hole body and the valve body form a fuel passage therebetween to communicate with an inflow port of the injection hole. The fuel passage is opened and closed by unseating and seating of the valve body. A resilient member generates a resilient force to urge the valve body toward the seating surface. A seat angle is an angle between two straight lines appearing in a cross section of the seating surface, the cross section including a center axis of the valve body. The seat angle is 90 degrees or less.
    Type: Application
    Filed: March 4, 2019
    Publication date: September 12, 2019
    Inventors: Hiroyuki HARADA, Takanori KITO, Keita IMAI, Makoto SAIZEN
  • Publication number: 20190277237
    Abstract: An injection hole body has injection holes to inject fuel. A valve body forms a fuel passage with an inner surface of the injection hole body to communicate with inflow ports of the injection holes. The valve body opens and closes the fuel passage by being seated on and unseated from a seating surface of the injection hole body. An inflow port gap distance is a gap between the valve body and the inflow ports along a center axis of the valve body. An inter-injection hole distance is a distance between inflow ports, which are adjacent to each other, among the inflow ports placed around the center axis. The inter-injection hole distance is smaller than the inflow port gap distance in a state where the valve body is unseated from the seating surface and is at a farthest position in its movable range.
    Type: Application
    Filed: March 4, 2019
    Publication date: September 12, 2019
    Inventor: Keita IMAI
  • Publication number: 20190277235
    Abstract: An injection hole body has multiple injection holes for injecting fuel. A valve body is unseated from and seated on a seating surface of the injection hole body. The injection hole body and the valve body form a specific space therebetween to communicate with inflow ports of the injection holes. A virtual region is surrounded by multiple straight lines. The straight lines connect portions of peripheral edges of the inflow ports, which are closest to a center axis of the valve body in the radial direction. A center volume is formed by extending the virtual region from the injection hole body toward the valve body along the center axis. A total injection hole volume is a total volume of the injection holes. The total injection hole volume is larger than the center volume in a state where the valve body is seated on the seating surface.
    Type: Application
    Filed: March 4, 2019
    Publication date: September 12, 2019
    Inventor: Keita IMAI