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公开(公告)号：US09306153B2
公开(公告)日：2016-04-05
申请号：US14425188
申请日：2013-04-15
Applicant: NEC Corporation
Inventor： Masahiko Ishida , Akihiro Kirihara , Shigeru Koumoto
Abstract: A thermoelectric conversion element includes a magnetic layer which has a component magnetized in an in-plane direction, an electromotive layer which includes a material with spin orbit coupling, and a spin injection layer. The spin injection layer is provided between the magnetic layer and the electromotive layer and magnetically coupled to both the magnetic layer and the electromotive layer. A magnetic moment per unit volume of the spin injection layer is smaller than the magnetic moment per unit volume of the magnetic layer.
Abstract translation: 热电转换元件包括具有在面内方向被磁化的分量的磁性层，包括具有自旋轨道耦合的材料的电动层和自旋注入层。 自旋注入层设置在磁性层和电动层之间，并磁耦合到磁性层和电动层两者。 每单位体积的自旋注入层的磁矩小于磁性层每单位体积的磁矩。
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12.发明申请公开(公告)号：US20150101648A1
公开(公告)日：2015-04-16
申请号：US14390850
申请日：2013-04-03
Applicant: NEC Corporation
Inventor： Masahiko Ishida , Akihiro Kirihara , Shigeru Koumoto
IPC: H01L37/00
CPC classification number: H01L37/00
Abstract: A thermoelectric conversion element includes a cable. The cable includes a first member extended in the axis direction of the cable, and a second member extended in the axis direction to cover at least a part of the outer face of the first member. One of the first and second members is a magnetic body. The other of the first and second members is a conductive body formed of material exhibiting a spin orbit coupling.
Abstract translation: 热电转换元件包括电缆。 电缆包括在电缆的轴线方向上延伸的第一部件和沿轴线方向延伸的第二部件，以覆盖第一部件的外表面的至少一部分。 第一和第二成员之一是磁体。 第一和第二构件中的另一个是由表现出自旋轨道耦合的材料形成的导电体。
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公开(公告)号：US10712375B2
公开(公告)日：2020-07-14
申请号：US15562233
申请日：2016-01-08
Applicant: NEC CORPORATION
Inventor： Takahiro Toizumi , Eisuke Saneyoshi , Ryota Suzuki , Shigeru Koumoto
IPC: G06F11/30 , G01R21/133
Abstract: In order to solve the above-described problem, there is provided a data processing device (1) including a measurement data acquisition unit (10) that acquires measurement data indicating a temporal change in at least one of current consumption and power consumption of an electrical apparatus, a fluctuation component extraction unit (20) that extracts a fluctuation component related to fluctuation in the current consumption and a fluctuation component related to fluctuation in the power consumption from the measurement data, and a feature value acquisition unit (30) that acquires a feature value of the fluctuation component.
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14.发明授权公开(公告)号：US10396267B2
公开(公告)日：2019-08-27
申请号：US15906522
申请日：2018-02-27
Applicant: NEC Corporation
Inventor： Akihiro Kirihara , Masahiko Ishida , Shigeru Koumoto
Abstract: A thermoelectric conversion element includes: a magnetic body having a magnetization; and an electromotive body formed of material exhibiting a spin orbit coupling and jointed to the magnetic body. The magnetic body has an upper joint surface jointed to the electromotive body. The upper joint surface has concavities and convexities.
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公开(公告)号：US10326069B2
公开(公告)日：2019-06-18
申请号：US14762674
申请日：2014-01-17
Applicant: NEC Corporation
Inventor： Masahiko Ishida , Akihiro Kirihara , Shigeru Koumoto
IPC: H01L35/28 , H01L29/82 , H01L37/00 , H01L29/66 , H01L35/04 , H01L35/34 , H01L35/20 , H01L35/22 , H01L35/26
Abstract: In order to further improve the spin-current/electric-current conversion efficiency in a spin-current thermoelectric conversion element, a thermoelectric conversion element includes a magnetic material layer having in-plane magnetization; and an electromotive material layer magnetically coupled with the magnetic material layer. The electromotive material layer includes a first conductor with a spin orbit coupling arising, and a second conductor having lower electric conductivity than electric conductivity of the first conductor.
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Patent Agency Ranking
公开(公告)号：US20150194587A1
公开(公告)日：2015-07-09
申请号：US14414969
申请日：2013-04-15
Applicant: NEC Corporation
Inventor： Akihiro Kirihara , Masahiko Ishida , Shigeru Koumoto
CPC classification number: H01L37/00 , H01L35/00 , H01L35/04 , H01L35/34 , H01L43/04 , H01L43/06 , H01L43/065 , H01L43/14
Abstract: A thermoelectric conversion element includes a thermoelectric conversion sheet possessing flexibility. The thermoelectric conversion sheet includes a magnetic layer, an electricity-generating layer that is formed on the magnetic layer so as to contact with the magnetic layer and that is formed of a material exhibiting spin orbit coupling, and a first electrode and a second electrode formed on the electricity-generating layer so as to contact with the electricity-generating layer. The first electrode and the second electrode extend in a longitudinal direction of the thermoelectric conversion sheet, and are separated from each other in a first direction perpendicular to the longitudinal direction.
Abstract translation: 热电转换元件包括具有柔性的热电转换片。 热电转换片包括磁性层，形成在磁性层上以与磁性层接触并由表现出自旋轨道耦合的材料形成的发电层，以及形成第一电极和第二电极的发电层 在发电层上与发电层接触。 第一电极和第二电极在热电转换片的长度方向上延伸，并且在与长度方向垂直的第一方向上彼此分离。
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公开(公告)号：US12019433B2
公开(公告)日：2024-06-25
申请号：US17263734
申请日：2018-08-03
Applicant: NEC Corporation
Inventor： Murtuza Petladwala , Shingo Takahashi , Shigeru Koumoto
CPC classification number: G05B23/0221 , G06N20/00
Abstract: Provided an apparatus configured to calculate a periodicity of the time series data using at least one of a periodogram of the time series data and an autocorrelation of the time series data; generate a plurality of subsequences from the time series data, a length of each subsequence set to the periodicity, calculate feature values of the plurality of subsequences, and categorize the plurality of subsequences, based on the features values thereof, into one or more groups; and execute analysis of the time series data, based on the categorization result.
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公开(公告)号：US11486915B2
公开(公告)日：2022-11-01
申请号：US16629650
申请日：2018-07-17
Applicant: NEC Corporation
Inventor： Eisuke Saneyoshi , Shigeru Koumoto , Akira Shoujiguchi
IPC: G01R19/25
Abstract: A state estimation apparatus is configured to extract a time interval to be analyzed from a time series of a first signal based on a second signal acquired in conjunction with the first signal relating to the operation of the facility, and estimate a change in a state of the facility based on waveform data of the time interval of the first signal.
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公开(公告)号：US11360129B2
公开(公告)日：2022-06-14
申请号：US17262518
申请日：2018-07-23
Applicant: NEC Corporation
Inventor： Shingo Takahashi , Shigeru Koumoto , Ryota Suzuki , Murtuza Petladwala
Abstract: Provided a method including applying a Fourier Transform to an AC current waveform measured to perform conversion thereof to a frequency domain; adjusting entire phase components of frequency spectra obtained as a result of the Fourier Transform, such that a phase component of an AC power supply frequency becomes zero; and applying an inverse Fourier Transform to the frequency spectra with the entire phase components thereof adjusted to obtain a current waveform in a time domain.
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公开(公告)号：US11263859B2
公开(公告)日：2022-03-01
申请号：US16634662
申请日：2017-08-02
Applicant: NEC Corporation
Inventor： Yuko Ohta , Shingo Takahashi , Eisuke Saneyoshi , Junichi Miyamoto , Shigeru Koumoto
Abstract: A maintenance monitoring apparatus includes: a maintenance management part that manages, based on a monitoring result of a current or power of a vending machine that provides a beverage by extracting the beverage from a raw material, whether an operation performed on the vending machine is a predetermined maintenance operation and whether the maintenance has been executed at an appropriate time interval and as many times as necessary; and a notification part that notifies that a maintenance has been executed or not.
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