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).
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Patent number: 12215027Abstract: 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: GrantFiled: September 29, 2017Date of Patent: February 4, 2025Assignee: NEC CORPORATIONInventors: Fumiyuki Nihey, Hideaki Numata
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Patent number: 12127485Abstract: 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 theType: GrantFiled: January 7, 2020Date of Patent: October 22, 2024Assignee: NANOBRIDGE SEMICONDUCTOR, INC.Inventors: Naoki Banno, Munehiro Tada, Hideaki Numata, Koichiro Okamoto
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Patent number: 12042766Abstract: 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: GrantFiled: September 29, 2017Date of Patent: July 23, 2024Assignee: NEC CORPORATIONInventor: Hideaki Numata
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Patent number: 11767442Abstract: 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: GrantFiled: September 28, 2018Date of Patent: September 26, 2023Assignee: NEC CORPORATIONInventor: Hideaki Numata
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Patent number: 11511229Abstract: 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: GrantFiled: September 29, 2017Date of Patent: November 29, 2022Assignee: NEC CORPORATIONInventors: Fumiyuki Nihey, Hideaki Numata, Yuki Kuwahara, Takeshi Saito, Fusako Sasaki
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Patent number: 11435251Abstract: 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: GrantFiled: September 13, 2017Date of Patent: September 6, 2022Assignee: NEC CORPORATIONInventors: Hideaki Numata, Hiroyuki Endoh
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Patent number: 11383984Abstract: 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: GrantFiled: October 10, 2017Date of Patent: July 12, 2022Assignee: NEC CORPORATIONInventors: Kazuki Ihara, Mayumi Kosaka, Ryota Yuge, Hideaki Numata, Fumiyuki Nihey
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Publication number: 20220123210Abstract: 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 theType: ApplicationFiled: January 7, 2020Publication date: April 21, 2022Inventors: Naoki BANNO, Munehiro TADA, Hideaki NUMATA, Koichiro OKAMOTO
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Publication number: 20210072108Abstract: 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: ApplicationFiled: September 13, 2017Publication date: March 11, 2021Applicant: NEC CORPORATIONInventors: Hideaki NUMATA, Hiroyuki ENDOH
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Publication number: 20200283296Abstract: 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: ApplicationFiled: October 10, 2017Publication date: September 10, 2020Applicant: NEC CORPORATIONInventors: Kazuki IHARA, Mayumi KOSAKA, Ryota YUGE, Hideaki NUMATA, Fumiyuki NIHEY
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Publication number: 20200277194Abstract: 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: ApplicationFiled: September 29, 2017Publication date: September 3, 2020Applicant: NEC CORPORATIONInventors: Fumiyuki NIHEY, Hideaki NUMATA
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Publication number: 20200254389Abstract: 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: ApplicationFiled: September 29, 2017Publication date: August 13, 2020Applicant: NEC CORPORATIONInventor: Hideaki NUMATA
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Publication number: 20200223695Abstract: 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: ApplicationFiled: September 29, 2017Publication date: July 16, 2020Applicant: NEC CORPORATIONInventors: Kazuki IHARA, Hideaki NUMATA
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Publication number: 20200216688Abstract: 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: ApplicationFiled: September 28, 2018Publication date: July 9, 2020Applicant: NEC CorporationInventor: Hideaki NUMATA
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Publication number: 20200047122Abstract: 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: ApplicationFiled: September 29, 2017Publication date: February 13, 2020Applicant: NEC CORPORATIONInventors: Fumiyuki NIHEY, Hideaki NUMATA, Yuki KUWAHARA, Takeshi SAITO, Fusako SASAKI
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Patent number: 8923042Abstract: 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: GrantFiled: August 27, 2013Date of Patent: December 30, 2014Assignee: NEC CorporationInventors: Nobuyuki Ishiwata, Hideaki Numata, Norikazu Ohshima
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Patent number: 8737119Abstract: 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: GrantFiled: March 29, 2012Date of Patent: May 27, 2014Assignee: NEC CorporationInventors: Takeshi Honda, Noboru Sakimura, Tadahiko Sugibayashi, Hideaki Numata, Norikazu Ohshima
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Publication number: 20130341744Abstract: 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: ApplicationFiled: August 27, 2013Publication date: December 26, 2013Applicant: NEC CorporationInventors: Nobuyuki ISHIWATA, Hideaki NUMATA, Norikazu OHSHIMA
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Patent number: 8547733Abstract: 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: GrantFiled: August 21, 2012Date of Patent: October 1, 2013Assignee: NEC CorporationInventors: Nobuyuki Ishiwata, Hideaki Numata, Norikazu Ohshima
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Patent number: 8526222Abstract: 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: GrantFiled: September 7, 2012Date of Patent: September 3, 2013Assignee: NEC CorporationInventors: Nobuyuki Ishiwata, Hideaki Numata, Norikazu Ohshima