Patents by Inventor Tomoya Kawai

Tomoya Kawai 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: 11871574
    Abstract: A semiconductor memory device according to an embodiment includes: a first interlayer insulating layer and a second interlayer insulating layer that are arranged in a first direction; a gate electrode layer provided between the first interlayer insulating layer and the second interlayer insulating layer; a semiconductor layer extending in the first direction and facing the gate electrode layer in a second direction intersecting the first direction; a first insulating layer provided between the gate electrode layer and the semiconductor layer; a charge storage layer provided between the gate electrode layer and the first insulating layer and containing a metal element; a second insulating layer provided between the gate electrode layer and the charge storage layer; and a first region provided between the charge storage layer and the first insulating layer and containing manganese (Mn), silicon (Si), and oxygen (O).
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: January 9, 2024
    Assignee: Kioxia Corporation
    Inventors: Atsushi Murakoshi, Tomoya Kawai
  • Publication number: 20230173813
    Abstract: An ink supplying device includes: an attachment unit to which a cartridge for storing ink to be supplied to an inkjet head of a printing apparatus is attached and in which an internal flow path is formed for the ink stored in the cartridge to flow; an external tube that is connected to the internal flow path of the attachment unit and circulates the ink; and a base portion that supports the attachment unit and a part of the external tube. The attachment unit is supported by the base portion so as to be rotatable in a direction around a predetermined central axis. The external tube is disposed in a curved state from a connecting portion connected to the internal flow path to a supported portion supported by the base portion and is provided such that the curved state changes in accordance with the rotation of the attachment unit.
    Type: Application
    Filed: December 5, 2022
    Publication date: June 8, 2023
    Applicant: MIMAKI ENGINEERING CO., LTD.
    Inventor: Tomoya Kawai
  • Publication number: 20220355598
    Abstract: A tube pump that sends a fluid includes a tube, a roller, and a roller holder. In the roller holder, a guide groove is formed that receives a shaft of the roller and defines a range in which the roller is movable with respect to the roller holder. The roller holder has an inner side surface and an outer side surface as surfaces defining the guide groove in the roller holder. The inner side surface has a protrusion protruding toward the outer side surface.
    Type: Application
    Filed: March 7, 2022
    Publication date: November 10, 2022
    Applicant: MIMAKI ENGINEERING CO., LTD.
    Inventors: TOMOYA KAWAI, Toshihiro Kimura
  • Publication number: 20220302140
    Abstract: A semiconductor memory device according to an embodiment includes: a first interlayer insulating layer and a second interlayer insulating layer that are arranged in a first direction; a gate electrode layer provided between the first interlayer insulating layer and the second interlayer insulating layer; a semiconductor layer extending in the first direction and facing the gate electrode layer in a second direction intersecting the first direction; a first insulating layer provided between the gate electrode layer and the semiconductor layer; a charge storage layer provided between the gate electrode layer and the first insulating layer and containing a metal element; a second insulating layer provided between the gate electrode layer and the charge storage layer; and a first region provided between the charge storage layer and the first insulating layer and containing manganese (Mn), silicon (Si), and oxygen (O).
    Type: Application
    Filed: September 10, 2021
    Publication date: September 22, 2022
    Applicant: Kioxia Corporation
    Inventors: Atsushi MURAKOSHI, Tomoya KAWAI
  • Patent number: 10947950
    Abstract: A hydroelectric power generation apparatus includes a hydroelectric power generation module, a beam as a supporting part, and a fixing part. The hydroelectric power generation module includes a rotary blade and a power generator that generates power by rotation of the rotary blade. The supporting part supports the hydroelectric power generation module. The fixing part fixes the supporting part to a water channel. The fixing part includes a bolt to press a surface of a wall portion of the water channel to fix the supporting part to the water channel. The hydroelectric power generation apparatus can dispense with a work performed around the water channel to install the apparatus and also be relocated easily and inexpensively.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: March 16, 2021
    Inventors: Tomoya Kawai, Yoshio Fujikawa
  • Patent number: 10882254
    Abstract: A printing device is provided and includes: a table attaching portion, replaceably attaching a respective table of a first table for mounting a three-dimensional object and a second table including a mounting surface for mounting a medium and a plurality of pass-through holes passing through the mounting surface and a back surface on an opposite side of the mounting surface; an ejecting unit, ejecting a shaping material for shaping the three-dimensional object and a coloring material for coloring the three-dimensional object and the medium toward the table attached to the table attaching portion; a relative moving portion, relatively moving the table attaching portion and the ejecting unit in a vertical direction and a horizontal direction; and a suction portion, decompressing a side of the back surface of the second table when the second table is attached to the table attaching portion to adsorb the medium to the mounting surface.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: January 5, 2021
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventors: Takuya Matsushima, Tomoya Kawai
  • Publication number: 20200277928
    Abstract: A hydroelectric power generation apparatus includes a hydroelectric power generation module, a beam as a supporting part, and a fixing part. The hydroelectric power generation module includes a rotary blade and a power generator that generates power by rotation of the rotary blade. The supporting part supports the hydroelectric power generation module. The fixing part fixes the supporting part to a water channel. The fixing part includes a bolt to press a surface of a wall portion of the water channel to fix the supporting part to the water channel. The hydroelectric power generation apparatus can dispense with a work performed around the water channel to install the apparatus and also be relocated easily and inexpensively.
    Type: Application
    Filed: January 23, 2017
    Publication date: September 3, 2020
    Inventors: Tomoya KAWAI, Yoshi FUJIKAWA
  • Patent number: 10710381
    Abstract: An inkjet printer is provided. An inkjet printer includes; a heater for heating up a medium after a printing operation, a second heater for further heating up the medium after the medium is heated up by the heater, a frame to which the second heater is fixed, and a wound roll holder for holding a wound roll that is the medium, being wound like a roll after the printing operation. The wound roll is placed at a position lower than the heater. The second heater is movable in relation to the frame, between a first position, where the second heater is placed at a location of a lower side of the heater and a front side of the wound roll, and a second position, where the second heater is placed at a location of an upper side of the wound roll.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: July 14, 2020
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventors: Tomoya Kawai, Katsutoshi Yamabe
  • Patent number: 10677214
    Abstract: A hydroelectric power generation apparatus includes a braking force generation unit configured to apply a braking force to rotation of a hydraulic turbine, and a controller configured to control the braking force generation unit to repeat increasing and decreasing the braking force to vary a rotational speed of the hydraulic turbine. Varying the rotational speed of the hydraulic turbine helps to flow away debris and the like adhering to hydraulic turbine blades. Preferably, the braking force generation unit includes an electrical, mechanical or fluid type braking device configured to apply a braking force to a rotary shaft of the hydraulic turbine. Preferably, the braking force generation unit includes a power generator configured to generate power through rotation of the hydraulic turbine, and the controller increases/decreases the braking force by varying power extracted from the power generator.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: June 9, 2020
    Assignee: NTN CORPORATION
    Inventors: Yasuyuki Fujita, Tomoya Kawai
  • Patent number: 10658295
    Abstract: According to one embodiment, a semiconductor memory device includes a first interconnect layer, a first insulating layer, a second interconnect layer, and a memory pillar including a second insulating layer, a charge storage layer, and a third insulating layer stacked on a part of a side surface and on the bottom surface of the memory pillar, and a first silicide layer in contact with the first interconnect layer, a semiconductor layer, and a second silicide layer stacked in order along a first direction. A height position of a bottom surface of the first silicide layer is lower than a top surface of the first interconnect layer, and a height position of a top surface of the first silicide layer is higher than a bottom surface of the second interconnect layer.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: May 19, 2020
    Assignee: Toshiba Memory Corporation
    Inventors: Tomoya Kawai, Takashi Ishida, Shuichi Toriyama
  • Patent number: 10648449
    Abstract: A hydroelectric power generation apparatus includes a hydroelectric power generation module, a supporting part, and a bar. The hydroelectric power generation module includes a rotary blade and a power generator that generates power by rotation of the rotary blade. The supporting part supports the hydroelectric power generation module. The supporting part can be installed at a water channel. The bar is connected to the supporting part to protrude from the supporting part. With one end of the bar closer to the supporting part or a portion of the supporting part serving as a center, the other end of the bar opposite to one end of the bar can be pivoted to switch a first state to a second state and vice versa.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: May 12, 2020
    Assignee: NTN CORPORATION
    Inventors: Tomoya Kawai, Yoshio Fujikawa
  • Publication number: 20190344586
    Abstract: An inkjet printer is provided. An inkjet printer includes; a heater for heating up a medium after a printing operation, a second heater for further heating up the medium after the medium is heated up by the heater, a frame to which the second heater is fixed, and a wound roll holder for holding a wound roll that is the medium, being wound like a roll after the printing operation. The wound roll is placed at a position lower than the heater. The second heater is movable in relation to the frame, between a first position, where the second heater is placed at a location of a lower side of the heater and a front side of the wound roll, and a second position, where the second heater is placed at a location of an upper side of the wound roll.
    Type: Application
    Filed: May 6, 2019
    Publication date: November 14, 2019
    Applicant: MIMAKI ENGINEERING CO., LTD.
    Inventors: TOMOYA KAWAI, Katsutoshi Yamabe
  • Publication number: 20190295956
    Abstract: According to one embodiment, a semiconductor memory device includes a first interconnect layer, a first insulating layer, a second interconnect layer, and a memory pillar including a second insulating layer, a charge storage layer, and a third insulating layer stacked on a part of a side surface and on the bottom surface of the memory pillar, and a first silicide layer in contact with the first interconnect layer, a semiconductor layer, and a second silicide layer stacked in order along a first direction. A height position of a bottom surface of the first silicide layer is lower than a top surface of the first interconnect layer, and a height position of a top surface of the first silicide layer is higher than a bottom surface of the second interconnect layer.
    Type: Application
    Filed: September 10, 2018
    Publication date: September 26, 2019
    Applicant: Toshiba Memory Corporation
    Inventors: Tomoya Kawai, Takashi Ishida, Shuichi Toriyama
  • Publication number: 20190162162
    Abstract: A control device performs a control process including the steps of: determining whether a predetermined condition has been established; when it has been determined that the predetermined condition has been established, clearing a counter; performing reverse rotation control; performing forward rotation control; incrementing the counter; and determining whether the counter's counted value has reached an upper limit.
    Type: Application
    Filed: July 10, 2017
    Publication date: May 30, 2019
    Inventors: Yasuyuki FUJITA, Tomoya KAWAI
  • Publication number: 20190072065
    Abstract: A hydroelectric power generation apparatus includes a hydroelectric power generation module, a supporting part, and a bar. The hydroelectric power generation module includes a rotary blade and a power generator that generates power by rotation of the rotary blade. The supporting part supports the hydroelectric power generation module. The supporting part can be installed at a water channel. The bar is connected to the supporting part to protrude from the supporting part. With one end of the bar closer to the supporting part or a portion of the supporting part serving as a center, the other end of the bar opposite to one end of the bar can be pivoted to switch a first state to a second state and vice versa.
    Type: Application
    Filed: February 1, 2017
    Publication date: March 7, 2019
    Inventors: Tomoya KAWAI, Yoshio FUJIKAWA
  • Publication number: 20180304535
    Abstract: A printing device is provided and includes: a table attaching portion, replaceably attaching a respective table of a first table for mounting a three-dimensional object and a second table including a mounting surface for mounting a medium and a plurality of pass-through holes passing through the mounting surface and a back surface on an opposite side of the mounting surface; an ejecting unit, ejecting a shaping material for shaping the three-dimensional object and a coloring material for coloring the three-dimensional object and the medium toward the table attached to the table attaching portion; a relative moving portion, relatively moving the table attaching portion and the ejecting unit in a vertical direction and a horizontal direction; and a suction portion, decompressing a side of the back surface of the second table when the second table is attached to the table attaching portion to adsorb the medium to the mounting surface.
    Type: Application
    Filed: April 16, 2018
    Publication date: October 25, 2018
    Applicant: MIMAKI ENGINEERING CO., LTD.
    Inventors: Takuya Matsushima, Tomoya Kawai
  • Publication number: 20180223792
    Abstract: A hydroelectric power generation apparatus includes a braking force generation unit configured to apply a braking force to rotation of a hydraulic turbine, and a controller configured to control the braking force generation unit to repeat increasing and decreasing the braking force to vary a rotational speed of the hydraulic turbine. Varying the rotational speed of the hydraulic turbine helps to flow away debris and the like adhering to hydraulic turbine blades. Preferably, the braking force generation unit includes an electrical, mechanical or fluid type braking device configured to apply a braking force to a rotary shaft of the hydraulic turbine. Preferably, the braking force generation unit includes a power generator configured to generate power through rotation of the hydraulic turbine, and the controller increases/decreases the braking force by varying power extracted from the power generator.
    Type: Application
    Filed: October 3, 2016
    Publication date: August 9, 2018
    Inventors: Yasuyuki FUJITA, Tomoya KAWAI
  • Publication number: 20180215079
    Abstract: A three-dimensional object shaping device is a device configured to shape a three-dimensional object using a layer shaping method, the device including: an ejection head configured to eject a shaping material; a flattening roller configured to rotate and move over the shaping material ejected on a layered surface to remove an extra shaping material; and a blade configured to make contact with the flattening roller along a circumferential surface of the flattening roller to scrape off the shaping material adhered to the circumferential surface by rotation of the flattening roller, where chrome plating is coated on the surface of the flattening roller, and the blade is made of carbon tool steel.
    Type: Application
    Filed: January 15, 2018
    Publication date: August 2, 2018
    Inventors: Kunio HAKKAKU, Tomoya KAWAI
  • Patent number: 10033291
    Abstract: This power transmission device is connected between an AC wiring system connected to an AC power supply, and a DC power supply, and transmits power from the DC power supply to the AC wiring system. The power transmission device includes an AC power supply voltage signal generator, a power converter, a DC voltage conversion unit, a switching element, and a switch open/close signal generator. The switch open/close signal generator includes: a control signal generation unit to generate a control signal formed from a pulse signal; and a pulse width determination unit to receive the control signal and generate a delayed signal obtained by delaying rising of the control signal, and when the delayed signal becomes a value corresponding to a magnitude of voltage of the AC power supply voltage signal, cause the control signal to fall, thereby making the control signal into the switch open/close signal.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: July 24, 2018
    Assignee: NTN CORPORATION
    Inventors: Masatoshi Mizutani, Hiroyuki Noda, Natsuhiko Mori, Tomoya Kawai
  • Patent number: D821321
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: June 26, 2018
    Assignee: NTN CORPORATION
    Inventors: Tomoya Kawai, Masatoshi Mizutani