Patents by Inventor Keita Kimura

Keita Kimura 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: 20240100227
    Abstract: Provided is a novel device or a novel implantation device. The implantation device is one of the following: (1) an implantation device comprising a material (A) having a density of 12 mg/cm3 or more and a dissolution rate of 80% or less as determined after immersion of the material (A) in physiological saline at 37° C. for 24 hours; and (2) an implantation device comprising a material (A) having a dissolution rate of 80% or less as determined after immersion of the material (A) in physiological saline at 37° C. for 24 hours and a ratio of X/Y of 0.24 or more wherein X is a density (mg/cm3) of the material (A) and Y is a degree of swelling of the material (A) expressed in terms of fold increase as determined after immersion of the material (A) in physiological saline at 37° C. for 60 minutes.
    Type: Application
    Filed: February 8, 2022
    Publication date: March 28, 2024
    Applicants: Shin-Etsu Chemical Co., Ltd., JAPAN VAM & POVAL CO., LTD., TOHOKU UNIVERSITY
    Inventors: Shuhei KANESATO, Yoshihiro KIMURA, Akinobu OHARUDA, Keita ISHIBA, Masafumi GOTO
  • Publication number: 20240096417
    Abstract: In one embodiment, a semiconductor storage device includes a string that has one end electrically connected to a bit line, and another end electrically connected to a source line, and includes a plurality of memory cells. An operation of writing data to each of a plurality of adjacent first memory cells among the plurality of memory cells is sequentially performed in a direction from a first memory cell on a side of the source line to a first memory cell on a side of the bit line. An operation of reading data from each of the plurality of adjacent first memory cells is performed to allow a current to flow through the string in a first direction from the source line to the bit line.
    Type: Application
    Filed: June 20, 2023
    Publication date: March 21, 2024
    Applicant: Kioxia Corporation
    Inventors: Hiroshi MAEJIMA, Katsuaki ISOBE, Keita KIMURA
  • Patent number: 11890410
    Abstract: A connector includes a first port, a second port, a first sealing member and a second sealing member. The first port and the first pipe sleeve portion are connected with each other such that at least a part of the first port and at least a part of the first pipe sleeve portion engage with each other by fitting and overlap with each other, and a first sealing member is positioned between two overlapping portions. The second port and the second pipe sleeve portion are connected with each other such that at least a part of the second port and at least a part of the second pipe sleeve portion engage with each other by fitting and push each other, and a second sealing member is positioned between two pushing portions.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: February 6, 2024
    Assignee: OLYMPUS CORPORATION
    Inventors: Kunitoshi Hiraga, Koji Yamaoka, Yuma Kasuya, Keita Kimura, Takefumi Uesugi, Shinya Torii
  • Publication number: 20230297255
    Abstract: According to one embodiment, a semiconductor memory device includes memory cells and a control circuit configured to control an erase operation on the memory cells. The control circuit sequentially executes, in the erase operation, a first erase process, a first erase verify process, a second erase process, and a second erase verify process on the memory cells, acquires, in the first erase verify process, first memory cells having a threshold voltage equal to or lower than a first verify voltage, from among the memory cells, acquires, in the second erase verify process, the number of second memory cells having a threshold voltage higher than the first verify voltage, from among the first memory cells, and determines whether the number of the second memory cells is larger than a first value or not.
    Type: Application
    Filed: September 12, 2022
    Publication date: September 21, 2023
    Applicant: Kioxia Corporation
    Inventors: Keita KIMURA, Kenri NAKAI
  • Patent number: 11534561
    Abstract: An insufflation device includes: a gas feeding conduit for feeding a predetermined gas which is fed from a gas supply source into a body cavity; and a processor. The processor measures a gas feeding time period until a predetermined amount of the gas is fed according to a set pressure, measures a pressure in the body cavity, calculates a gas discharging time period based on the set pressure and a measurement result of the measured pressure; and adjusts a gas feeding flow rate of the gas according to a difference between the measured gas feeding time period and the calculated gas discharging time period.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: December 27, 2022
    Assignee: OLYMPUS CORPORATION
    Inventors: Yuma Kasuya, Takefumi Uesugi, Koji Yamaoka, Kunitoshi Hiraga, Shinya Torii, Keita Kimura
  • Patent number: 11437109
    Abstract: A semiconductor storage device includes memory strings, bit lines connected to the memory strings, respectively, sense transistors of which gates are connected to the bit lines, respectively, first transistors connected between the bit lines and the gates of the sense transistors, respectively, and a control circuit. Each of the memory strings includes first and second memory transistors adjacent to each other. The control circuit is configured to perform, during a first write sequence, a read operation with respect to the second memory transistors, a program operation with respect to the first memory transistors, and a verify operation with respect to the first memory transistors, in this order. During the verify operation, the control circuit turns on the first transistors during a first sense period, and then turns on the first transistors during a second sense period longer than the first sense period.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: September 6, 2022
    Assignee: KIOXIA CORPORATION
    Inventor: Keita Kimura
  • Publication number: 20220020440
    Abstract: A semiconductor storage device includes memory strings, bit lines connected to the memory strings, respectively, sense transistors of which gates are connected to the bit lines, respectively, first transistors connected between the bit lines and the gates of the sense transistors, respectively, and a control circuit. Each of the memory strings includes first and second memory transistors adjacent to each other. The control circuit is configured to perform, during a first write sequence, a read operation with respect to the second memory transistors, a program operation with respect to the first memory transistors, and a verify operation with respect to the first memory transistors, in this order. During the verify operation, the control circuit turns on the first transistors during a first sense period, and then turns on the first transistors during a second sense period longer than the first sense period.
    Type: Application
    Filed: March 1, 2021
    Publication date: January 20, 2022
    Inventor: Keita KIMURA
  • Publication number: 20210340664
    Abstract: A metal mask material for OLED use reduced in amount warpage due to etching, a method for manufacturing the same, and a metal mask are provided. The metal mask material and metal mask of the present invention contain, by mass %, Ni: 35.0 to 37.0% and Co: 0.00 to 0.50%, have a balance of Fe and impurities, have thicknesses of 5.00 ?m or more and 50.00 ?m or less, and have amounts of warpage defined as maximum values in amounts of rise of four corners of a square shaped sample of the metal mask material of 100 mm sides when etching the sample from one surface until the thickness of the sample becomes ? and placing the etched sample on a surface plate of 5.0 mm or less.
    Type: Application
    Filed: September 27, 2019
    Publication date: November 4, 2021
    Applicant: NIPPON STEEL Chemical & Material Co., Ltd.
    Inventors: Mitsuharu YONEMURA, Naoki FUJIMOTO, Keita KIMURA, Hiroto UNNO
  • Publication number: 20210290864
    Abstract: An insufflation system includes an insufflation device for supplying gas to a body cavity, and a suction device for suctioning the gas from the body cavity through a suction conduit at a suction flow rate. The insufflation device includes a flow rate sensor for measuring a gas feeding flow rate, a pressure sensor for measuring body cavity internal pressure, a first on-off valve for controlling the gas feeding flow rate, a second on-off valve for opening and closing the suction conduit, and a processor for opening the second on-off valve and controlling the first on-off valve to feed the gas at an amount when a first target gas feeding flow rate calculated from difference between the body cavity internal pressure and insufflation target pressure is lower than a threshold flow rate, the amount being obtained by adding the suction flow rate to the first target gas feeding flow rate.
    Type: Application
    Filed: June 3, 2021
    Publication date: September 23, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Koji YAMAOKA, Yuma KASUYA, Shinya TORII, Keita KIMURA, Kunitoshi HIRAGA, Takefumi UESUGI
  • Publication number: 20210290865
    Abstract: A connection unit for air feeding tube is a connection unit to which an air feeding tube is connectable and fixable and which includes: a first pipe having an opening through which gas from the air feeding tube flows in; a second pipe that is configured to be arrangeable substantially parallel to a surface of a bed used in an examination, and includes an opening through which the gas flows out; and an air feeding flow path which is formed to include the two openings and through which the gas is fed. When the air feeding tube is fixed to the connection unit for air feeding tube and is used, a part of the air feeding flow path for the gas is formed so as to pass through an area located at a position opposite to a gravitational direction with respect to a central axis of the second pipe.
    Type: Application
    Filed: June 9, 2021
    Publication date: September 23, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Motoyasu TOYAMA, Kunitoshi HIRAGA, Shinya TORII, Koji YAMAOKA, Takefumi UESUGI, Yuma KASUYA, Keita KIMURA
  • Patent number: 10964377
    Abstract: A semiconductor storage device includes first, second, and third transistors, first, second, and third bit lines connected to the first, second, and third transistors, a word line connected to the first, second, and third transistors, and a control circuit configured to perform a program operation for writing data to the second and third transistors, including raising a first voltage applied to the first bit line at a first timing, raising a second voltage applied to the word line at a second timing, raising a third voltage applied to the second bit line at a third timing, raising a fourth voltage applied to the third bit line at a fourth timing, and lowering the first voltage at a fifth timing. The first voltage is raised to a first predetermined voltage, and each of the third and fourth voltages is raised to a second predetermined voltage smaller than the first predetermined voltage.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: March 30, 2021
    Assignee: KIOXIA CORPORATION
    Inventors: Keita Kimura, Kenri Nakai, Mario Sako
  • Publication number: 20210065774
    Abstract: A semiconductor storage device includes first, second, and third transistors, first, second, and third bit lines connected to the first, second, and third transistors, a word line connected to the first, second, and third transistors, and a control circuit configured to perform a program operation for writing data to the second and third transistors, including raising a first voltage applied to the first bit line at a first timing, raising a second voltage applied to the word line at a second timing, raising a third voltage applied to the second bit line at a third timing, raising a fourth voltage applied to the third bit line at a fourth timing, and lowering the first voltage at a fifth timing. The first voltage is raised to a first predetermined voltage, and each of the third and fourth voltages is raised to a second predetermined voltage smaller than the first predetermined voltage.
    Type: Application
    Filed: March 2, 2020
    Publication date: March 4, 2021
    Inventors: Keita KIMURA, Kenri NAKAI, Mario SAKO
  • Publication number: 20210038061
    Abstract: An insufflation device includes: a gas feeding conduit through which a gas is supplied to a body cavity of a patient; a first open/close valve mounted on the gas feeding conduit, the first open/close valve being an electromagnetic valve configured to control a flow rate of the gas flowing through the gas feeding conduit by pulse width modulation; and a controller, the controller being configured to: detect a current value of a current which flows through the first open/close valve; calculate a resistance value of the first open/close valve based on the current value; determine a duty ratio of a pulse signal applied to the first open/close valve based on the resistance value and a target gas feeding flow rate of the gas supplied to a body cavity; and supply the pulse signal, an effective voltage of which is adjusted, to the first open/close valve.
    Type: Application
    Filed: October 22, 2020
    Publication date: February 11, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Takefumi UESUGI, Koji YAMAOKA, Yuma KASUYA, Shinya TORII, Keita KIMURA, Kunitoshi HIRAGA
  • Publication number: 20210016022
    Abstract: A connector includes a first port, a second port, a first sealing member and a second sealing member. The first port and the first pipe sleeve portion are connected with each other such that at least a part of the first port and at least a part of the first pipe sleeve portion engage with each other by fitting and overlap with each other, and a first sealing member is positioned between two overlapping portions. The second port and the second pipe sleeve portion are connected with each other such that at least a part of the second port and at least a part of the second pipe sleeve portion engage with each other by fitting and push each other, and a second sealing member is positioned between two pushing portions.
    Type: Application
    Filed: July 17, 2020
    Publication date: January 21, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Kunitoshi HIRAGA, Koji YAMAOKA, Yuma KASUYA, Keita KIMURA, Takefumi UESUGI, Shinya TORII
  • Patent number: 10896733
    Abstract: A semiconductor memory device comprises: a memory transistor; a first wiring connected to a gate electrode of the memory transistor; and a control device that executes a read operation to read data of the memory transistor and a write operation to write data in the memory transistor. In the read operation or the write operation, the control device: increases a voltage of the first wiring to a first voltage from a first timing to a second timing; and adjusts a length from the first timing to the second timing corresponding to at least one of a voltage of the first wiring, a current of the first wiring, and an amount of charge flowed through the first wiring.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: January 19, 2021
    Assignee: Toshiba Memory Corporation
    Inventors: Keita Kimura, Hidehiro Shiga
  • Publication number: 20210001059
    Abstract: An insufflation device includes: a gas feeding conduit for feeding a predetermined gas which is fed from a gas supply source into a body cavity; and a processor. The processor measures a gas feeding time period until a predetermined amount of the gas is fed according to a set pressure, measures a pressure in the body cavity, calculates a gas discharging time period based on the set pressure and a measurement result of the measured pressure; and adjusts a gas feeding flow rate of the gas according to a difference between the measured gas feeding time period and the calculated gas discharging time period.
    Type: Application
    Filed: September 21, 2020
    Publication date: January 7, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Yuma KASUYA, Takefumi UESUGI, Koji YAMAOKA, Kunitoshi HIRAGA, Shinya TORII, Keita KIMURA
  • Publication number: 20200376206
    Abstract: A gas feeding apparatus includes first and second temperature sensors for measuring a temperature of an atmosphere that are disposed in a housing. The apparatus may also include a panel, a protrusion protruding forward from the panel, a first opening provided in the panel in a vicinity of the first temperature sensor, and a second opening provided in the panel in a vicinity of the second temperature sensor. The first temperature sensor and the second temperature sensor are separated by a predetermined distance in a horizontal direction and disposed below the protrusion.
    Type: Application
    Filed: July 17, 2020
    Publication date: December 3, 2020
    Applicant: OLYMPUS CORPORATION
    Inventors: Kunitoshi HIRAGA, Shinya TORII, Koji YAMAOKA, Yuma KASUYA, Takefumi UESUGI, Keita KIMURA
  • Publication number: 20200360049
    Abstract: A pipe for fluid supply includes: a pipe configured integrally with an air feeding conduit and a pressure measurement conduit; inlets of the air feeding conduit and the pressure measurement conduit; outlets of the air feeding conduit and the pressure measurement conduit; and tube connection portions provided at the respective inlets in the pipe such that an angle between a vertical direction of the respective inlets and a vertical direction of each the respective outlets is 30° to 60°.
    Type: Application
    Filed: July 31, 2020
    Publication date: November 19, 2020
    Applicant: OLYMPUS CORPORATION
    Inventors: Shinya Torii, Kunitoshi HIRAGA, Koji YAMAOKA, Takefumi UESUGI, Yuma KASUYA, Keita KIMURA, Nanaho TOGI
  • Publication number: 20200294594
    Abstract: A semiconductor memory device comprises: a memory transistor; a first wiring connected to a gate electrode of the memory transistor; and a control device that executes a read operation to read data of the memory transistor and a write operation to write data in the memory transistor. In the read operation or the write operation, the control device: increases a voltage of the first wiring to a first voltage from a first timing to a second timing; and adjusts a length from the first timing to the second timing corresponding to at least one of a voltage of the first wiring, a current of the first wiring, and an amount of charge flowed through the first wiring.
    Type: Application
    Filed: September 6, 2019
    Publication date: September 17, 2020
    Applicant: Toshiba Memory Corporation
    Inventors: Keita KIMURA, Hidehiro SHIGA
  • Patent number: 10490278
    Abstract: According to one embodiment, a semiconductor memory device includes a memory string including a first select transistor, a first transistor adjacent to the first select transistor, and a memory cell transistor, a first select gate line, a first interconnect, a word line, a row decoder, a temperature sensor, and a control circuit. In the erase operation, the control circuit selects a first mode for applying a first voltage to the first interconnect when a temperature measured by the temperature sensor is equal to or higher than a first temperature, and selects a second mode for applying a second voltage to the first interconnect when the temperature measured is less than the first temperature.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: November 26, 2019
    Assignee: Toshiba Memory Corporation
    Inventors: Keita Kimura, Masahiko Iga, Yuichiro Suzuki