Patents by Inventor Hiroaki Yoda

Hiroaki Yoda 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: 20220399048
    Abstract: According to one embodiment, a magnetic device includes first and second conductive portions, first and second stacked bodies, and a controller. The first conductive portion includes first to third region. The third region is between the first and second regions. The first stacked body includes first and second magnetic layers. The second magnetic layer is between the third region and the first magnetic layer. The second conductive portion includes fourth to sixth regions. The sixth region is between the fourth and fifth regions. The second stacked body includes third and fourth magnetic layers. The fourth magnetic layer is between the sixth region and the third magnetic layer. The first stacked body is configured to be in a first low or high electrical resistance state. The second stacked body is configured to be in a second low high electrical resistance state.
    Type: Application
    Filed: October 8, 2020
    Publication date: December 15, 2022
    Applicant: YODA-S, Inc.
    Inventors: Hiroaki YODA, Yuichi OHSAWA, Yushi KATO, Tornorni YODA
  • Publication number: 20220324208
    Abstract: Provided is a laminated film for easy material recycling and with excellent rigidity and thermal shrinkage resistance. The laminated film includes, in sequence, a layer A containing an ethylene polymer (A) containing 80 mol % or more of a structural unit derived from ethylene, a layer B containing an ethylene polymer (B) containing 70 mol % or more of a structural unit derived from ethylene and an inorganic filler, a layer C containing an ethylene polymer (C) containing 70 mol % or more of a structural unit derived from ethylene, at least one layer selected from the group consisting of a barrier layer and an adhesive layer, and a layer D containing an ethylene polymer (D) containing 70 mol % or more of a structural unit derived from ethylene.
    Type: Application
    Filed: July 22, 2020
    Publication date: October 13, 2022
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hiroaki YODA, Nao IGAWA
  • Publication number: 20220291898
    Abstract: According to one embodiment, an arithmetic device includes an arithmetic element part, and a controller. The arithmetic element part includes first and second elements. The first element includes a first conductive member and a first stacked body. The first conductive member includes first to third portions. The first stacked body includes a first magnetic layer, and a first counter magnetic layer. The second element includes a second conductive member and a second stacked body. The second conductive member includes fourth and fifth portions, and a sixth portion between the fourth and fifth portions. The second stacked body includes a second magnetic layer, and a second counter magnetic layer. The controller is configured to perform an XNOR operation of first and second inputs. The first input corresponds to electrical resistances of the stacked bodies. The second input corresponds to potentials of the magnetic layers.
    Type: Application
    Filed: June 1, 2022
    Publication date: September 15, 2022
    Applicant: YODA-S, Inc.
    Inventors: Hiroaki YODA, Yuichi OHSAWA, Yushi KATO, Tomomi YODA
  • Patent number: 11127895
    Abstract: According to one embodiment, a magnetic memory device includes a first insulating region, a first counter insulating region, a first conductive member, and a first magnetic element. The first conductive member is provided between the first insulating region and the first counter insulating region. The first conductive member extends in a first direction crossing a second direction. The second direction is from the first insulating region toward the first counter insulating region. The first magnetic element is provided between the first insulating region and the first counter insulating region. A third direction from the first conductive member toward the first magnetic element crosses a plane including the first and second directions. A portion of a first insulating side surface of the first insulating region opposes the first conductive member. A portion of a first counter insulating side surface of the first counter insulating region opposes the first conductive member.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: September 21, 2021
    Assignee: KABUSHIKl KAISHA TOSHIBA
    Inventors: Satoshi Shirotori, Yuichi Ohsawa, Hideyuki Sugiyama, Altansargai Buyandalai, Mariko Shimizu, Hiroaki Yoda
  • Patent number: 11017827
    Abstract: A magnetic device includes: a first conductive layer; a first magnetoresistive effect element disposed on the first conductive layer and including a first control terminal; and a first circuit configured to supply a first current in a first direction into the first conductive layer and apply a first control voltage to the first control terminal of the first magnetoresistive effect element, wherein in a case in which the first current is supplied to the first conductive layer, the first magnetoresistive effect element holds a value corresponding to a logical disjunction between a first value of first data in the first magnetoresistive effect element and a second value of the first control voltage corresponding to second data.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: May 25, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoaki Inokuchi, Naoharu Shimomura, Katsuhiko Koui, Yuuzo Kamiguchi, Kazutaka Ikegami, Shinobu Fujita, Hiroaki Yoda
  • Patent number: 11017826
    Abstract: According to one embodiment, a magnetic memory device includes a conductive member, a first magnetic layer, a first counter magnetic layer, and a first nonmagnetic layer. The conductive member includes a first portion, a second portion, and a third portion between the first portion and the second portion. The first counter magnetic layer is provided between the third portion and the first magnetic layer in a first direction crossing a second direction. The second direction is from the first portion toward the second portion. The first nonmagnetic layer is provided between the first magnetic layer and the first counter magnetic layer. The third portion includes a first position, and a second position between the first position and the first counter magnetic layer in the first direction. A second concentration of boron at the second position is lower than a first concentration of boron at the first position.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: May 25, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yushi Kato, Soichi Oikawa, Hiroaki Yoda
  • Patent number: 10902900
    Abstract: A magnetic memory device includes a conductive member, a stacked body, and a controller. The stacked body includes a first magnetic layer, a second magnetic layer provided between the conductive member and the first magnetic layer, and a third magnetic layer stacked with the first magnetic layer and the second magnetic layer. The controller causes a current to flow in the conductive member. The controller causes a current to flow between the conductive member and the stacked body. The controller is able to identify three or more levels of an electrical resistance value of the stacked body.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: January 26, 2021
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsuhiko Koui, Hiroaki Yoda, Tomoaki Inokuchi, Naoharu Shimomura, Hideyuki Sugiyama
  • Patent number: 10897007
    Abstract: According to one embodiment, a magnetic memory device includes a first magnetic region, a first counter magnetic region, and a first nonmagnetic region provided between the first magnetic region and the first counter magnetic region. The first magnetic region includes a first magnetic film, a second magnetic film, and an intermediate film. The first magnetic film is provided between the second magnetic film and the first nonmagnetic region. The intermediate film includes Ru and is provided between the first magnetic film and the second magnetic film. A distance along a first direction between the first magnetic film and the second magnetic film is not less than 1.8 nm and not more than 2.2 nm. The first direction is from the first counter magnetic region toward the first magnetic region.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: January 19, 2021
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Soichi Oikawa, Yushi Kato, Hiroaki Yoda
  • Patent number: 10896708
    Abstract: According to one embodiment, a magnetic memory device includes a conductive member, a first element portion, and a controller. The conductive member includes a first portion, a second portion, and a third portion between the first portion and the second portion. The first element portion includes a first element, a first interconnect, and a first circuit. The first element includes a first magnetic layer, a first counter magnetic layer, and a first nonmagnetic layer. The first counter magnetic layer is provided between the third portion and the first magnetic layer. The first nonmagnetic layer is provided between the first counter magnetic layer and the first magnetic layer. The first interconnect is electrically connected to the first magnetic layer. The first circuit is electrically connected to the first interconnect. The first circuit includes a first switch, a first capacitance element, a first parallel switch, and a first parallel capacitance element.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: January 19, 2021
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomoaki Inokuchi, Katsuhiko Koui, Naoharu Shimomura, Hideyuki Sugiyama, Kazutaka Ikegami, Susumu Takeda, Satoshi Takaya, Shinobu Fujita, Hiroaki Yoda
  • Patent number: 10867649
    Abstract: According to one embodiment, a magnetic memory device includes a first conductive layer, a first stacked body, and a controller. The first conductive layer includes a first region, a second region, and a third region between the first region and the second region. The first stacked body includes a first magnetic layer, a second magnetic layer provided between the third region and the first magnetic layer in a first direction crossing a second direction, and a first nonmagnetic layer provided between the first magnetic layer and the second magnetic layer. The second direction is from the first region toward the second region. The controller electrically is connected to the first region, the second region, and the first magnetic layer. The controller performs at least first to third operations. In the operations, the controller sets the first stacked body to first to third resistance state.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: December 15, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroaki Yoda, Satoshi Takaya, Yuichi Ohsawa, Naoharu Shimomura, Katsuhiko Koui, Yushi Kato, Shinobu Fujita
  • Patent number: 10811067
    Abstract: According to one embodiment, a magnetic memory device includes a conductive layer, a first magnetic layer, a second magnetic layer, and a first nonmagnetic layer. The conductive layer includes first and second regions, and a third region between the first region and the second region. The second magnetic layer is provided between the third region and the first magnetic layer in a first direction crossing a second direction. The second direction is from the first region toward the second region. The first nonmagnetic layer is provided between the first and second magnetic layers. The second region includes first to third conductive portions. A direction from the first conductive portion toward the second conductive portion is aligned with a third direction. The third direction crosses a plane including the first and second directions. The third conductive portion is between the first and second conductive portions in the third direction.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: October 20, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Altansargai Buyandalai, Satoshi Shirotori, Yuichi Ohsawa, Hideyuki Sugiyama, Mariko Shimizu, Hiroaki Yoda, Katsuhiko Koui
  • Patent number: 10797229
    Abstract: According to one embodiment, a magnetic memory device includes a conductive layer, first to fourth magnetic layers, first and second intermediate layers, and a controller. The conductive layer includes first, to fifth portions. The first magnetic layer is separated from the third portion. The second magnetic layer is provided between the third portion and the first magnetic layer. The first intermediate layer is provided between the first and second magnetic layers. The third magnetic layer is separated from the fourth portion. The fourth magnetic layer is provided between the fourth portion and the third magnetic layer. The second intermediate layer is provided between the third and fourth magnetic layers. The controller is electrically connected to the first and second portions. The controller implements a first operation of supplying a first current to the conductive layer, and a second operation of supplying a second current to the conductive layer.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: October 6, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Altansargai Buyandalai, Satoshi Shirotori, Yuichi Ohsawa, Hideyuki Sugiyama, Mariko Shimizu, Hiroaki Yoda, Tomoaki Inokuchi
  • Patent number: 10783947
    Abstract: According to one embodiment, a magnetic memory device includes a first member, a first memory cell, and a controller. The first member includes first, second, and third regions. The first memory cell includes first and second magnetic layers, and a first nonmagnetic layer. The second magnetic layer is provided between the third region and the first magnetic layer. The first nonmagnetic layer is provided between the first and second magnetic layers. The controller is electrically connected to the first and second regions, and the first magnetic layer. The controller programs first information to the first memory cell by setting the first magnetic layer to a first electric potential. The controller programs second information to the first memory cell by setting the first magnetic layer to a second electric potential. The second electric potential is different from the first electric potential. The second information is different from the first information.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: September 22, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsuhiko Koui, Hiroaki Yoda, Tomoaki Inokuchi, Naoharu Shimomura
  • Publication number: 20200279596
    Abstract: According to one embodiment, a magnetic memory device includes a conductive member, a first element portion, and a controller. The conductive member includes a first portion, a second portion, and a third portion between the first portion and the second portion. The first element portion includes a first element, a first interconnect, and a first circuit. The first element includes a first magnetic layer, a first counter magnetic layer, and a first nonmagnetic layer. The first counter magnetic layer is provided between the third portion and the first magnetic layer. The first nonmagnetic layer is provided between the first counter magnetic layer and the first magnetic layer. The first interconnect is electrically connected to the first magnetic layer. The first circuit is electrically connected to the first interconnect. The first circuit includes a first switch, a first capacitance element, a first parallel switch, and a first parallel capacitance element.
    Type: Application
    Filed: January 13, 2020
    Publication date: September 3, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoaki INOKUCHI, Katsuhiko KOUI, Naoharu SHIMOMURA, Hideyuki SUGIYAMA, Kazutaka IKEGAMI, Susumu TAKEDA, Satoshi TAKAYA, Shinobu FUJITA, Hiroaki YODA
  • Patent number: 10734053
    Abstract: According to one embodiment, a magnetic memory device includes a conductive member, a first magnetic layer, a second magnetic layer, and a first nonmagnetic layer. The conductive member includes a first layer. The first layer includes at least one selected from the group consisting of HfN having a NaCl structure, HfN having a fcc structure, and HfC having a NaCl structure. The first magnetic layer is separated from the first layer in a first direction. The second magnetic layer is provided between the first layer and the first magnetic layer. The first nonmagnetic layer is provided between the first magnetic layer and the second magnetic layer.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: August 4, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mizue Ishikawa, Yushi Kato, Soichi Oikawa, Hiroaki Yoda
  • Publication number: 20200168260
    Abstract: According to one embodiment, a magnetic memory device includes a conductive member, a first magnetic layer, a first counter magnetic layer, and a first nonmagnetic layer. The conductive member includes a first portion, a second portion, and a third portion between the first portion and the second portion. The first counter magnetic layer is provided between the third portion and the first magnetic layer in a first direction crossing a second direction. The second direction is from the first portion toward the second portion. The first nonmagnetic layer is provided between the first magnetic layer and the first counter magnetic layer. The third portion includes a first position, and a second position between the first position and the first counter magnetic layer in the first direction. A second concentration of boron at the second position is lower than a first concentration of boron at the first position.
    Type: Application
    Filed: November 27, 2019
    Publication date: May 28, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yushi KATO, Soichi OIKAWA, Hiroaki YODA
  • Publication number: 20200168790
    Abstract: According to one embodiment, a magnetic memory device includes a first magnetic region, a first counter magnetic region, and a first nonmagnetic region provided between the first magnetic region and the first counter magnetic region. The first magnetic region includes a first magnetic film, a second magnetic film, and an intermediate film. The first magnetic film is provided between the second magnetic film and the first nonmagnetic region. The intermediate film includes Ru and is provided between the first magnetic film and the second magnetic film. A distance along a first direction between the first magnetic film and the second magnetic film is not less than 1.8 nm and not more than 2.2 nm. The first direction is from the first counter magnetic region toward the first magnetic region.
    Type: Application
    Filed: November 27, 2019
    Publication date: May 28, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Soichi OIKAWA, Yushi KATO, Hiroaki YODA
  • Publication number: 20200161536
    Abstract: According to one embodiment, a magnetic memory device includes a first insulating region, a first counter insulating region, a first conductive member, and a first magnetic element. The first conductive member is provided between the first insulating region and the first counter insulating region. The first conductive member extends in a first direction crossing a second direction. The second direction is from the first insulating region toward the first counter insulating region. The first magnetic element is provided between the first insulating region and the first counter insulating region. A third direction from the first conductive member toward the first magnetic element crosses a plane including the first and second directions. A portion of a first insulating side surface of the first insulating region opposes the first conductive member. A portion of a first counter insulating side surface of the first counter insulating region opposes the first conductive member.
    Type: Application
    Filed: November 15, 2019
    Publication date: May 21, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Satoshi SHIROTORI, Yuichi OHSAWA, Hideyuki SUGIYAMA, Altansargai BUYANDALAI, Mariko SHIMIZU, Hiroaki YODA
  • Patent number: 10643682
    Abstract: A magnetic memory includes: first to third terminals; a conductive layer including first to fifth regions, the first region being electrically connected to the first terminal, the fifth region being electrically connected to the second terminal, and the third region being electrically connected to the third terminal; a first magnetoresistive element including a first magnetic layer, a second magnetic layer disposed between the second region and the first magnetic layer, and a first nonmagnetic layer disposed between the first and the second magnetic layer; a second magnetoresistive element including a third magnetic layer, a fourth magnetic layer disposed between the fourth region and the third magnetic layer, and a second nonmagnetic layer disposed between the third and the fourth magnetic layer; and a circuit flowing a write current between the first and the second terminal and between the second and the third terminal in a write operation.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: May 5, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroaki Yoda, Naoharu Shimomura, Yoshiaki Saito, Yuichi Ohsawa, Keiko Abe
  • Publication number: 20200090718
    Abstract: A magnetic memory device includes a conductive member, a stacked body, and a controller. The stacked body includes a first magnetic layer, a second magnetic layer provided between the conductive member and the first magnetic layer, and a third magnetic layer stacked with the first magnetic layer and the second magnetic layer. The controller causes a current to flow in the conductive member. The controller causes a current to flow between the conductive member and the stacked body. The controller is able to identify three or more levels of an electrical resistance value of the stacked body.
    Type: Application
    Filed: March 13, 2019
    Publication date: March 19, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Katsuhiko KOUI, Hiroaki Yoda, Tomoaki Inokuchi, Naoharu Shimomura, Hideyuki Sugiyama