Patents by Inventor Hideaki Numata

Hideaki Numata 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: 11511229
    Abstract: A nanocarbon separation method includes: a step of preparing a plurality of liquids with different specific gravities in which at least one of the plurality of liquids is a dispersion liquid in which a mixture of nanocarbons with different properties is dispersed; a step of sequentially injecting the plurality of liquids into an electrophoresis tank so that the specific gravities of the liquids decrease from a bottom to a top of the liquids in a direction of gravitational force; and a step of separating the mixture of the nanocarbons by moving a part of the mixture toward an electrode side disposed in an upper part of the electrophoresis tank and moving a remainder of the mixture toward an electrode side disposed in a lower part of the electrophoresis tank by applying a direct current voltage to the electrodes.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: November 29, 2022
    Assignee: NEC CORPORATION
    Inventors: Fumiyuki Nihey, Hideaki Numata, Yuki Kuwahara, Takeshi Saito, Fusako Sasaki
  • Patent number: 11435251
    Abstract: A control apparatus controls an array-type sensor. The control apparatus includes: a first selector/driver that is configured to select and drive one of a plurality of first lines; a second selector/driver that is configured to select and drive at least one of a plurality of second lines; a read/arithmetic circuit that is configured to read outputs of respective unit cells and perform a correction operation on the outputs; and a nonvolatile storage device that is configured to store reference data. The sensor outputs of the respective unit cells with respect to two or more reference inputs are stored as reference data in the nonvolatile storage device in a calibration mode, and a correction operation is performed on the sensor outputs of the respective unit cells using the stored reference data and results of the correction operation are output in a measurement mode.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: September 6, 2022
    Assignee: NEC CORPORATION
    Inventors: Hideaki Numata, Hiroyuki Endoh
  • Patent number: 11383984
    Abstract: A nanocarbon separation device includes a separation tank which is configured to accommodate a dispersion liquid including a nanocarbon, a first electrode that is provided at an upper part in the separation tank, a second electrode that is provided at a lower part in the separation tank, and a partition member that is provided between the first electrode and the second electrode in the separation tank, and the partition member partitions the separation tank into a plurality of regions.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: July 12, 2022
    Assignee: NEC CORPORATION
    Inventors: Kazuki Ihara, Mayumi Kosaka, Ryota Yuge, Hideaki Numata, Fumiyuki Nihey
  • Publication number: 20220123210
    Abstract: A switching element that has reduced switching voltage and leakage current and that demonstrates high reliability and low power consumption is achieved as a result of comprising: a first insulation layer in which first wiring mainly consisting of copper is embedded in a first wiring groove that opens upward; a second insulation layer which is formed on an upper surface of the first insulation layer and the first wiring and has an opening that reaches the first insulation layer and the first wiring; a first electrode which is the portion of the first wiring that is exposed from the opening; an oxygen supply layer which is formed on an upper surface of the second insulation layer, generates oxygen plasma during etching to form the opening in the second insulation layer, and remains at least in the vicinity of the opening of the upper surface of the second insulation layer; an ion conducting layer which is formed on the upper surface of the first insulation layer and the first electrode that are exposed from the
    Type: Application
    Filed: January 7, 2020
    Publication date: April 21, 2022
    Inventors: Naoki BANNO, Munehiro TADA, Hideaki NUMATA, Koichiro OKAMOTO
  • Publication number: 20210072108
    Abstract: A control apparatus controls an array-type sensor. The control apparatus includes: a first selector/driver that is configured to select and drive one of a plurality of first lines; a second selector/driver that is configured to select and drive at least one of a plurality of second lines; a read/arithmetic circuit that is configured to read outputs of respective unit cells and perform a correction operation on the outputs; and a nonvolatile storage device that is configured to store reference data. The sensor outputs of the respective unit cells with respect to two or more reference inputs are stored as reference data in the nonvolatile storage device in a calibration mode, and a correction operation is performed on the sensor outputs of the respective unit cells using the stored reference data and results of the correction operation are output in a measurement mode.
    Type: Application
    Filed: September 13, 2017
    Publication date: March 11, 2021
    Applicant: NEC CORPORATION
    Inventors: Hideaki NUMATA, Hiroyuki ENDOH
  • Publication number: 20200283296
    Abstract: A nanocarbon separation device includes a separation tank which is configured to accommodate a dispersion liquid including a nanocarbon, a first electrode that is provided at an upper part in the separation tank, a second electrode that is provided at a lower part in the separation tank, and a partition member that is provided between the first electrode and the second electrode in the separation tank, and the partition member partitions the separation tank into a plurality of regions.
    Type: Application
    Filed: October 10, 2017
    Publication date: September 10, 2020
    Applicant: NEC CORPORATION
    Inventors: Kazuki IHARA, Mayumi KOSAKA, Ryota YUGE, Hideaki NUMATA, Fumiyuki NIHEY
  • Publication number: 20200277194
    Abstract: A nanocarbon separation method includes: preparing a nanocarbon dispersion liquid in which nanocarbons and a non-ionic surfactant are dispersed in a solvent; injecting the nanocarbon dispersion liquid into a separation tank; applying a direct current voltage to a first electrode provided at an upper part of the interior of the separation tank and a second electrode provided at a lower part of the interior of the separation tank and generating a pH gradient in the nanocarbon dispersion liquid inside the separation tank, and separating metallic nanocarbons and semiconductor nanocarbons included in the nanocarbon dispersion liquid.
    Type: Application
    Filed: September 29, 2017
    Publication date: September 3, 2020
    Applicant: NEC CORPORATION
    Inventors: Fumiyuki NIHEY, Hideaki NUMATA
  • Publication number: 20200254389
    Abstract: A cross-flow filtration device includes: a filter module which includes an inner chamber and an outer chamber separated by a semipermeable membrane; a process liquid tank which is configured to accommodate a process liquid; a pump which is configured to cause the process liquid to circulate to the inner chamber in the filter module and the process liquid tank; a replenisher tank which is configured to accommodate a replenisher liquid to be replenished into the process liquid tank, at least one or more sensors which are configured to measure a pressure of the circulating process liquid; and a replenisher measurement unit which is configured to measure an amount of the replenisher liquid supplied from the replenisher tank to the process liquid tank. The process liquid tank is configured to be continuously replenished with the replenisher liquid.
    Type: Application
    Filed: September 29, 2017
    Publication date: August 13, 2020
    Applicant: NEC CORPORATION
    Inventor: Hideaki NUMATA
  • Publication number: 20200223695
    Abstract: A method for separating a single-walled carbon nanotube mixture includes: preparing a dispersion liquid containing the single-walled carbon nanotube mixture and a surfactant; and separating the single-walled carbon nanotube mixture contained in the dispersion liquid, wherein in the separating the single-walled carbon nanotube mixture, a dispersion liquid in which a physical property of the dispersion liquid is within a prescribed range is used.
    Type: Application
    Filed: September 29, 2017
    Publication date: July 16, 2020
    Applicant: NEC CORPORATION
    Inventors: Kazuki IHARA, Hideaki NUMATA
  • Publication number: 20200216688
    Abstract: A nanocarbon ink contains nanocarbons, a solvent, and a polyoxyethylene alkyl ether represented by the following expression: CnH2n(OCH2CH2)mOH where, n=12 to 18 and m=20 to 100.
    Type: Application
    Filed: September 28, 2018
    Publication date: July 9, 2020
    Applicant: NEC Corporation
    Inventor: Hideaki NUMATA
  • Publication number: 20200047122
    Abstract: A nanocarbon separation method includes: a step of preparing a plurality of liquids with different specific gravities in which at least one of the plurality of liquids is a dispersion liquid in which a mixture of nanocarbons with different properties is dispersed; a step of sequentially injecting the plurality of liquids into an electrophoresis tank so that the specific gravities of the liquids decrease from a bottom to a top of the liquids in a direction of gravitational force; and a step of separating the mixture of the nanocarbons by moving a part of the mixture toward an electrode side disposed in an upper part of the electrophoresis tank and moving a remainder of the mixture toward an electrode side disposed in a lower part of the electrophoresis tank by applying a direct current voltage to the electrodes.
    Type: Application
    Filed: September 29, 2017
    Publication date: February 13, 2020
    Applicant: NEC CORPORATION
    Inventors: Fumiyuki NIHEY, Hideaki NUMATA, Yuki KUWAHARA, Takeshi SAITO, Fusako SASAKI
  • Patent number: 8923042
    Abstract: A magnetic random access memory according to the present invention is provided with: a magnetic recording layer including a magnetization free region having a reversible magnetization, wherein a write current is flown through the magnetic recording layer in an in-plane direction; a magnetization fixed layer having a fixed magnetization; a non-magnetic layer provided between the magnetization free region and the magnetization fixed layer; and a heat sink structure provided to be opposed to the magnetic recording layer and having a function of receiving and radiating heat generated in the magnetic recording layer. The magnetic random access memory thus-structured radiates heat generated in the magnetic recording layer by using the heat sink structure, suppressing the temperature increase caused by the write current flown in the in-plane direction.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: December 30, 2014
    Assignee: NEC Corporation
    Inventors: Nobuyuki Ishiwata, Hideaki Numata, Norikazu Ohshima
  • Patent number: 8737119
    Abstract: A magnetic memory cell 1 is provided with a magnetic recording layer 10 which is a ferromagnetic layer and a pinned layer 30 connected with the magnetic recording layer 10 through a non-magnetic layer 20. The magnetic recording layer 10 has a magnetization inversion region 13, a first magnetization fixed region 11 and a second magnetization fixed region 12. The magnetization inversion region 13 has a magnetization whose orientation is invertible and overlaps the pinned layer 30. The first magnetization fixed region 11 is connected with a first boundary B1 in the magnetization inversion region 13 and a magnetization orientation is fixed on a first direction. The second magnetization fixed region 12 is connected with a second boundary B2 in magnetization inversion region 13 and a magnetization orientation is fixed on a second direction. The first direction and the second direction are opposite to each other.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: May 27, 2014
    Assignee: NEC Corporation
    Inventors: Takeshi Honda, Noboru Sakimura, Tadahiko Sugibayashi, Hideaki Numata, Norikazu Ohshima
  • Publication number: 20130341744
    Abstract: A magnetic random access memory according to the present invention is provided with: a magnetic recording layer including a magnetization free region having a reversible magnetization, wherein a write current is flown through the magnetic recording layer in an in-plane direction; a magnetization fixed layer having a fixed magnetization; a non-magnetic layer provided between the magnetization free region and the magnetization fixed layer; and a heat sink structure provided to be opposed to the magnetic recording layer and having a function of receiving and radiating heat generated in the magnetic recording layer. The magnetic random access memory thus-structured radiates heat generated in the magnetic recording layer by using the heat sink structure, suppressing the temperature increase caused by the write current flown in the in-plane direction.
    Type: Application
    Filed: August 27, 2013
    Publication date: December 26, 2013
    Applicant: NEC Corporation
    Inventors: Nobuyuki ISHIWATA, Hideaki NUMATA, Norikazu OHSHIMA
  • Patent number: 8547733
    Abstract: A magnetic random access memory according to the present invention is provided with: a magnetic recording layer including a magnetization free region having a reversible magnetization, wherein a write current is flown through the magnetic recording layer in an in-plane direction; a magnetization fixed layer having a fixed magnetization; a non-magnetic layer provided between the magnetization free region and the magnetization fixed layer; and a heat sink structure provided to be opposed to the magnetic recording layer and having a function of receiving and radiating heat generated in the magnetic recording layer. The magnetic random access memory thus-structured radiates heat generated in the magnetic recording layer by using the heat sink structure, suppressing the temperature increase caused by the write current flown in the in-plane direction.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: October 1, 2013
    Assignee: NEC Corporation
    Inventors: Nobuyuki Ishiwata, Hideaki Numata, Norikazu Ohshima
  • Patent number: 8526222
    Abstract: A magnetic random access memory according to the present invention is provided with: a magnetic recording layer including a magnetization free region having a reversible magnetization, wherein a write current is flown through the magnetic recording layer in an in-plane direction; a magnetization fixed layer having a fixed magnetization; a non-magnetic layer provided between the magnetization free region and the magnetization fixed layer; and a heat sink structure provided to be opposed to the magnetic recording layer and having a function of receiving and radiating heat generated in the magnetic recording layer. The magnetic random access memory thus-structured radiates heat generated in the magnetic recording layer by using the heat sink structure, suppressing the temperature increase caused by the write current flown in the in-plane direction.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: September 3, 2013
    Assignee: NEC Corporation
    Inventors: Nobuyuki Ishiwata, Hideaki Numata, Norikazu Ohshima
  • Patent number: 8477528
    Abstract: A magnetic memory cell 1 is provided with a magnetic recording layer 10 which is a ferromagnetic layer and a pinned layer 30 connected with the magnetic recording layer 10 through a non-magnetic layer 20. The magnetic recording layer 10 has a magnetization inversion region 13, a first magnetization fixed region 11 and a second magnetization fixed region 12. The magnetization inversion region 13 has a magnetization whose orientation is invertible and overlaps the pinned layer 30. The first magnetization fixed region 11 is connected with a first boundary B1 in the magnetization inversion region 13 and a magnetization orientation is fixed on a first direction. The second magnetization fixed region 12 is connected with a second boundary B2 in magnetization inversion region 13 and a magnetization orientation is fixed on a second direction. The first direction and the second direction are opposite to each other.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: July 2, 2013
    Assignee: NEC Corporation
    Inventors: Takeshi Honda, Noboru Sakimura, Tadahiko Sugibayashi, Hideaki Numata, Norikazu Ohshima
  • Patent number: 8351249
    Abstract: A magnetic random access memory according to the present invention is provided with: a magnetic recording layer including a magnetization free region having a reversible magnetization, wherein a write current is flown through the magnetic recording layer in an in-plane direction; a magnetization fixed layer having a fixed magnetization; a non-magnetic layer provided between the magnetization free region and the magnetization fixed layer; and a heat sink structure provided to be opposed to the magnetic recording layer and having a function of receiving and radiating heat generated in the magnetic recording layer. The magnetic random access memory thus-structured radiates heat generated in the magnetic recording layer by using the heat sink structure, suppressing the temperature increase caused by the write current flown in the in-plane direction.
    Type: Grant
    Filed: April 9, 2007
    Date of Patent: January 8, 2013
    Assignee: NEC Corporation
    Inventors: Nobuyuki Ishiwata, Hideaki Numata, Norikazu Ohshima
  • Publication number: 20120326254
    Abstract: A magnetic random access memory according to the present invention is provided with: a magnetic recording layer including a magnetization free region having a reversible magnetization, wherein a write current is flown through the magnetic recording layer in an in-plane direction; a magnetization fixed layer having a fixed magnetization; a non-magnetic layer provided between the magnetization free region and the magnetization fixed layer; and a heat sink structure provided to be opposed to the magnetic recording layer and having a function of receiving and radiating heat generated in the magnetic recording layer. The magnetic random access memory thus-structured radiates heat generated in the magnetic recording layer by using the heat sink structure, suppressing the temperature increase caused by the write current flown in the in-plane direction.
    Type: Application
    Filed: September 7, 2012
    Publication date: December 27, 2012
    Applicant: NEC CORPORATION
    Inventors: Nobuyuki ISHIWATA, Hideaki NUMATA, Norikazu OHSHIMA
  • Publication number: 20120320667
    Abstract: A magnetic random access memory according to the present invention is provided with: a magnetic recording layer including a magnetization free region having a reversible magnetization, wherein a write current is flown through the magnetic recording layer in an in-plane direction; a magnetization fixed layer having a fixed magnetization; a non-magnetic layer provided between the magnetization free region and the magnetization fixed layer; and a heat sink structure provided to be opposed to the magnetic recording layer and having a function of receiving and radiating heat generated in the magnetic recording layer. The magnetic random access memory thus-structured radiates heat generated in the magnetic recording layer by using the heat sink structure, suppressing the temperature increase caused by the write current flown in the in-plane direction.
    Type: Application
    Filed: August 21, 2012
    Publication date: December 20, 2012
    Applicant: NEC CORPORATION
    Inventors: Nobuyuki ISHIWATA, Hideaki NUMATA, Norikazu OHSHIMA