Patents by Inventor Masahiro Koike
Masahiro Koike 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).
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Publication number: 20240099155Abstract: A memory includes: a magnet including a first and second portions adjacent in a first direction. The first portion has a first dimension in a second direction at a first position at which a dimension of the magnet in the second direction is maximum, the second direction perpendicular to the first direction, the second portion has a second dimension in the second direction at a second position at which a dimension of the magnet in the second direction is minimum, the second dimension smaller than the first dimension, the first portion is continuous to the second portion via a third position between the first and second positions, a curve corresponding to an outer of the magnet extends between the first and third positions, and the curve passes through a side closer to the central axis of the magnet than a straight line connecting the first and second positions.Type: ApplicationFiled: September 11, 2023Publication date: March 21, 2024Applicant: Kioxia CorporationInventors: Masahiro KOIKE, Michael Arnaud QUINSAT, Nobuyuki UMETSU, Tsutomu NAKANISHI, Agung SETIADI, Megumi YAKABE, Shigeyuki HIRAYAMA, Masaki KADO, Yasuaki OOTERA, Shiho NAKAMURA, Susumu HASHIMOTO, Tsuyoshi KONDO
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Patent number: 11915928Abstract: A semiconductor memory device includes a first conductive layer, a semiconductor layer extending in a first direction and being opposed to the first conductive layer, and a gate insulating film disposed between the first conductive layer and the semiconductor layer. The first conductive layer includes a first region, a second region disposed between the first region and the gate insulating film, and a third region disposed between the first region and the first interlayer insulating layer. The first to the third regions contain a metal. The third region contains silicon (Si). The first region does not contain silicon (Si) or has a lower silicon (Si) content than a silicon (Si) content in the third region. The second region does not contain silicon (Si) or has a lower silicon (Si) content than the silicon (Si) content in the third region.Type: GrantFiled: September 10, 2021Date of Patent: February 27, 2024Assignee: Kioxia CorporationInventors: Masahiro Koike, Masao Shingu, Masaya Ichikawa
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Publication number: 20230309304Abstract: A semiconductor memory device includes conductive layers, a semiconductor layer opposed to the conductive layers, and a gate insulating film disposed therebetween. When positions corresponding to surfaces on one and the other sides of the first conductive layer and an intermediate position thereof are respectively assumed to be a first position to a third position, when positions corresponding to surfaces on one and the other sides of the second conductive layer and an intermediate position thereof are respectively assumed to be a fourth position to a sixth position, and when lengths of the semiconductor layer at the first position to the sixth position are respectively assumed to be a first length to a sixth length, the first length to the third length are smaller than the fourth length to the sixth length, and the third length is smaller than the first length and the second length.Type: ApplicationFiled: September 7, 2022Publication date: September 28, 2023Applicant: KIOXIA CORPORATIONInventors: Masahiro KOIKE, Daisuke HAGISHIMA
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Patent number: 11610617Abstract: A magnetic memory according to an embodiment includes: a first wiring and a second wiring; a first magnetic member having a first portion electrically connected to the first wiring and a second portion electrically connected to the second wiring, the first magnetic member extending in a first direction from the first portion to the second portion; a third wiring that is electrically insulated from the first magnetic member; and a control circuit electrically connected to the first wiring, the second wiring, and the third wiring, the control circuit supplying a current pulse, in which a trailing time is longer than a rising time, to the third wiring.Type: GrantFiled: June 16, 2021Date of Patent: March 21, 2023Assignee: Kioxia CorporationInventors: Naoharu Shimomura, Michael Arnaud Quinsat, Masahiro Koike
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Publication number: 20220301869Abstract: A semiconductor memory device includes a first conductive layer, a semiconductor layer extending in a first direction and being opposed to the first conductive layer, and a gate insulating film disposed between the first conductive layer and the semiconductor layer. The first conductive layer includes a first region, a second region disposed between the first region and the gate insulating film, and a third region disposed between the first region and the first interlayer insulating layer. The first to the third regions contain a metal. The third region contains silicon (Si). The first region does not contain silicon (Si) or has a lower silicon (Si) content than a silicon (Si) content in the third region. The second region does not contain silicon (Si) or has a lower silicon (Si) content than the silicon (Si) content in the third region.Type: ApplicationFiled: September 10, 2021Publication date: September 22, 2022Applicant: Kioxia CorporationInventors: Masahiro KOIKE, Masao SHINGU, Masaya ICHIKAWA
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Patent number: 11417831Abstract: A magnetic memory according to an embodiment includes: a magnetic member including a first to third magnetic parts, the first magnetic part including a first portion and a second portion and extending in a first direction from the first portion to the second portion, the second magnetic part extending in a second direction that crosses the first direction, and the third magnetic part connecting the second magnetic part and the first portion; a first nonmagnetic metal layer arranged along the third magnetic part, the first nonmagnetic metal layer including a first end portion on a side of the second portion, a position of the first end portion along the first direction being between positions of the first and second portions along the first direction; and a first and second electrodes supplying a current between the first and second magnetic parts via the third magnetic part.Type: GrantFiled: August 13, 2019Date of Patent: August 16, 2022Assignee: KIOXIA CORPORATIONInventors: Nobuyuki Umetsu, Tsuyoshi Kondo, Masaki Kado, Shiho Nakamura, Susumu Hashimoto, Yasuaki Ootera, Michael Arnaud Quinsat, Masahiro Koike, Tsutomu Nakanishi, Megumi Yakabe, Agung Setiadi
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Publication number: 20220076723Abstract: A magnetic memory according to an embodiment includes: a first wiring and a second wiring; a first magnetic member having a first portion electrically connected to the first wiring and a second portion electrically connected to the second wiring, the first magnetic member extending in a first direction from the first portion to the second portion; a third wiring that is electrically insulated from the first magnetic member; and a control circuit electrically connected to the first wiring, the second wiring, and the third wiring, the control circuit supplying a current pulse, in which a trailing time is longer than a rising time, to the third wiring.Type: ApplicationFiled: June 16, 2021Publication date: March 10, 2022Applicant: Kioxia CorporationInventors: Naoharu SHIMOMURA, Michael ARNAUD QUINSAT, Masahiro KOIKE
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Patent number: 11232822Abstract: According to one embodiment, a magnetic memory includes a magnetic body with two portions of a first dimension in a first direction which are spaced from each other a second direction and another portion that has a second dimension less than the first dimension in the first direction, which is between the two other portions. A circuit supplies a shift pulse to the magnetic body. The shift pulse includes a first pulse and a second pulse and moves a domain wall in the magnetic body along the second direction. The first pulse has a first pulse width. The second pulse has a second pulse width less than the first pulse width. The second pulse is supplied to the magnetic body after the first pulse.Type: GrantFiled: September 2, 2020Date of Patent: January 25, 2022Assignee: KIOXIA CORPORATIONInventors: Michael Arnaud Quinsat, Tsuyoshi Kondo, Masahiro Koike, Shiho Nakamura, Susumu Hashimoto, Masaki Kado, Nobuyuki Umetsu, Yasuaki Ootera, Megumi Yakabe, Agung Setiadi, Shigeyuki Hirayama, Yoshihiro Ueda, Tsutomu Nakanishi
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Patent number: 11227646Abstract: According to one embodiment, a device includes a member including a first portion having a first dimension in first direction, a second portion spaced from the first portion and having a second dimension in the first direction, a third portion between the first and second portions and having a third dimension in the first direction, and a fourth portion between the first and third portions and having a fourth dimension in the first direction; and a circuit to supply a shift pulse including first and second pulses to the member and move a domain wall in the member. The third dimension is less than the first dimension. The second and fourth dimensions are less than the third dimension. A second value of the second pulse is less than a first value of the first pulse.Type: GrantFiled: September 11, 2020Date of Patent: January 18, 2022Assignee: KIOXIA CORPORATIONInventors: Masahiro Koike, Michael Arnaud Quinsat, Nobuyuki Umetsu, Tsutomu Nakanishi, Yasuaki Ootera, Tsuyoshi Kondo
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Patent number: 11198168Abstract: A first-face forming portion of a workpiece and a second-face forming portion spaced apart from it by the length of an intermediate portion are clamped with a first-face forming die and a second-face forming die, respectively. The first-face forming die is moved either upward or downward and the second-face forming die is moved in a direction toward the first-face forming die, and the second-face forming die is pressed against the first-face forming die to shape the upright wall portion.Type: GrantFiled: January 14, 2019Date of Patent: December 14, 2021Assignee: HONDA MOTOR CO., LTD.Inventors: Makoto Tsuchiya, Naoki Inoue, Toshifumi Matsuda, Masahiro Koike
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Patent number: 11173573Abstract: Provided are a laser processing method and a laser processing device which prevent a laser irradiation unit from colliding with an edge of a plate material when the laser irradiation unit returns to a portion just above the plate material from an outer part of the portion just above the plate material. The laser processing method for cutting a plate material by laser irradiation, the method including: a plate material end portion holding process of holding a position of an end portion of the plate material at a predetermined position when a laser irradiation unit is present outside a portion just above the plate material; and a laser irradiation unit moving process in which the laser irradiation unit moves from an outer part of the portion just above the plate material to the portion just above the plate material.Type: GrantFiled: September 16, 2016Date of Patent: November 16, 2021Assignee: Honda Motor Co., Ltd.Inventors: Takanori Sato, Shin Yoshida, Masahiro Koike, Kenichi Fukami
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Publication number: 20210295889Abstract: According to one embodiment, a device includes a member including a first portion having a first dimension in first direction, a second portion spaced from the first portion and having a second dimension in the first direction, a third portion between the first and second portions and having a third dimension in the first direction, and a fourth portion between the first and third portions and having a fourth dimension in the first direction; and a circuit to supply a shift pulse including first and second pulses to the member and move a domain wall in the member. The third dimension is less than the first dimension. The second and fourth dimensions are less than the third dimension. A second value of the second pulse is less than a first value of the first pulse.Type: ApplicationFiled: September 11, 2020Publication date: September 23, 2021Applicant: Kioxia CorporationInventors: Masahiro Koike, Michael Arnaud Quinsat, Nobuyuki Umetsu, Tsutomu Nakanishi, Yasuaki Ootera, Tsuyoshi Kondo
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Publication number: 20210249061Abstract: According to one embodiment, a magnetic memory includes a magnetic body with two portions of a first dimension in a first direction which are spaced from each other a second direction and another portion that has a second dimension less than the first dimension in the first direction, which is between the two other portions. A circuit supplies a shift pulse to the magnetic body. The shift pulse includes a first pulse and a second pulse and moves a domain wall in the magnetic body along the second direction. The first pulse has a first pulse width. The second pulse has a second pulse width less than the first pulse width. The second pulse is supplied to the magnetic body after the first pulse.Type: ApplicationFiled: September 2, 2020Publication date: August 12, 2021Inventors: Michael ARNAUD QUINSAT, Tsuyoshi Kondo, Masahiro Koike, Shiho Nakamura, Susumu Hashimoto, Masaki Kado, Nobuyuki Umetsu, Yasuaki Ootera, Megumi Yakabe, Agung Setiadi, Shigeyuki Hirayama, Yoshihiro Ueda, Tsutomu Nakanishi
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Patent number: 11002709Abstract: An ultrasonic inspection system includes an ultrasonic sensor and a control device. The ultrasonic sensor has a piezoelectric element that transmits and receives ultrasonic waves and plate portions and that are arranged so as to contact an upper surface of the piezoelectric element and have different thicknesses. The control device acquires a propagation time of a reflected wave reflected on an upper surface of the plate portion, calculates a sound velocity of the plate portion using the propagation time of the reflected wave and a thickness of the plate portion, and corrects a sound velocity of a pipe and acquires a sound velocity of the plate portion based on the calculated sound velocity. In addition, the control device acquires a propagation time of a reflected wave reflected on an upper surface of the plate portion, and calibrates a time axis based on the propagation time of the reflected wave, a thickness of the plate portion, and the sound velocity of the plate portion.Type: GrantFiled: November 28, 2018Date of Patent: May 11, 2021Assignee: Hitachi-GE Nuclear Energy, Ltd.Inventors: Akinori Tamura, Naoyuki Kouno, Tetsuya Matsui, Masahiro Koike
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Publication number: 20200303624Abstract: A magnetic memory according to an embodiment includes: a magnetic member including a first to third magnetic parts, the first magnetic part including a first portion and a second portion and extending in a first direction from the first portion to the second portion, the second magnetic part extending in a second direction that crosses the first direction, and the third magnetic part connecting the second magnetic part and the first portion; a first nonmagnetic metal layer arranged along the third magnetic part, the first nonmagnetic metal layer including a first end portion on a side of the second portion, a position of the first end portion along the first direction being between positions of the first and second portions along the first direction; and a first and second electrodes supplying a current between the first and second magnetic parts via the third magnetic part.Type: ApplicationFiled: August 13, 2019Publication date: September 24, 2020Applicant: TOSHIBA MEMORY CORPORATIONInventors: Nobuyuki UMETSU, Tsuyoshi Kondo, Masaki Kado, Shiho Nakamura, Susumu Hashimoto, Yasuaki Ootera, Michael Arnaud Quinsat, Masahiro Koike, Tsutomu Nakanishi, Megumi Yakabe, Agung Setiadi
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Patent number: 10707356Abstract: According to one embodiment, a magnetic memory device includes a stacked structure including first and second magnetic layers having variable and fixed magnetization directions, respectively, and a nonmagnetic layer provided between the first and second magnetic layers and containing a first compound containing first cationic and anionic elements, and a predetermined-material layer provided around side surfaces of the stacked structure and containing a second compound containing second added cationic and second added anionic elements. An absolute value of a valence number (ionic valency) of the second added cationic element is less than that of the first cationic element, and an absolute value of a valence number (ionic valency) of the second added anionic element is less than that of the first anionic element.Type: GrantFiled: March 14, 2019Date of Patent: July 7, 2020Assignee: TOSHIBA MEMORY CORPORATIONInventors: Megumi Yakabe, Yasushi Nakasaki, Tadaomi Daibou, Tadashi Kai, Junichi Ito, Masahiro Koike, Shogo Itai, Takamitsu Ishihara
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Publication number: 20200083289Abstract: According to one embodiment, a magnetic memory device includes a stacked structure including first and second magnetic layers having variable and fixed magnetization directions, respectively, and a nonmagnetic layer provided between the first and second magnetic layers and containing a first compound containing first cationic and anionic elements, and a predetermined-material layer provided around side surfaces of the stacked structure and containing a second compound containing second added cationic and second added anionic elements. An absolute value of a valence number (ionic valency) of the second added cationic element is less than that of the first cationic element, and an absolute value of a valence number (ionic valency) of the second added anionic element is less than that of the first anionic element.Type: ApplicationFiled: March 14, 2019Publication date: March 12, 2020Applicant: TOSHIBA MEMORY CORPORATIONInventors: Megumi YAKABE, Yasushi NAKASAKI, Tadaomi DAIBOU, Tadashi KAI, Junichi ITO, Masahiro KOIKE, Shogo ITAI, Takamitsu ISHIHARA
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Publication number: 20190217364Abstract: A first-face forming portion of a workpiece and a second-face forming portion spaced apart from it by the length of an intermediate portion are clamped with a first-face forming die and a second-face forming die, respectively. The first-face forming die is moved either upward or downward and the second-face forming die is moved in a direction toward the first-face forming die, and the second-face forming die is pressed against the first-face forming die to shape the upright wall portion.Type: ApplicationFiled: January 14, 2019Publication date: July 18, 2019Inventors: Makoto Tsuchiya, Naoki Inoue, Toshifumi Matsuda, Masahiro Koike
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Publication number: 20190195830Abstract: An ultrasonic inspection system includes an ultrasonic sensor and a control device. The ultrasonic sensor has a piezoelectric element that transmits and receives ultrasonic waves and plate portions and that are arranged so as to contact an upper surface of the piezoelectric element and have different thicknesses. The control device acquires a propagation time of a reflected wave reflected on an upper surface of the plate portion, calculates a sound velocity of the plate portion using the propagation time of the reflected wave and a thickness of the plate portion, and corrects a sound velocity of a pipe and acquires a sound velocity of the plate portion based on the calculated sound velocity. In addition, the control device acquires a propagation time of a reflected wave reflected on an upper surface of the plate portion, and calibrates a time axis based on the propagation time of the reflected wave, a thickness of the plate portion, and the sound velocity of the plate portion.Type: ApplicationFiled: November 28, 2018Publication date: June 27, 2019Inventors: Akinori TAMURA, Naoyuki KOUNO, Tetsuya MATSUI, Masahiro KOIKE
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Publication number: 20190096461Abstract: According to one embodiment, a memory device includes: a first memory element arranged above a substrate; a first contact portion adjacent to the first memory element in a first direction parallel to a surface of the substrate; a second contact portion arranged above the first memory element in a second direction perpendicular to the surface of the substrate; and a second memory element arranged above the first contact portion in the second direction. First dimensions at upper parts of the first and second memory elements are smaller than second dimensions at lower parts of the first and second memory elements, and third dimensions at upper parts of the first and second contact portions are larger than fourth dimensions at lower parts of the first and second contact portions.Type: ApplicationFiled: March 9, 2018Publication date: March 28, 2019Applicant: Toshiba Memory CorporationInventors: Masahiro Koike, Shogo Itai, Tadaomi Daibou, Chikayoshi Kamata, Junichi Ito, Masahiko Nakayama