公开(公告)号：US20250146122A1

公开(公告)日：2025-05-08

申请号：US19015943

申请日：2025-01-10

Applicant: Atsuhito Sawabe ,  Yutaka Kimura ,  National University Corporation Nagaoka University of Technology ,  WASEDA UNIVERSITY ,  DISCO Corporation

Inventor： Hideo Aida ,  Atsuhito Sawabe ,  Yutaka Kimura ,  Jun Mizuno ,  Ryuji Oshima

IPC: C23C14/14 ,  C30B23/02 ,  C30B25/18 ,  C30B29/02 ,  C30B33/00

Abstract: Provided are a structure for producing a high-quality single crystal diamond, and a method for manufacturing the structure for producing diamond. A structure for producing a diamond is composed of a base substrate and an Ir thin film formed on the base substrate. The thermal expansion coefficient of the base substrate is 5 times or less of the thermal expansion coefficient of diamond and the melting point of the base substrate is 700° C. or higher. The peak angle in the X-ray diffraction pattern of the Ir thin film is different from the peak angle in the X-ray diffraction pattern of the base substrate.

公开(公告)号：US20250114761A1

公开(公告)日：2025-04-10

申请号：US18729757

申请日：2022-12-27

Applicant: ENEOS Corporation ,  WASEDA UNIVERSITY

Inventor： Yuichiro HIRANO ,  Naoki ITO ,  Yasushi SEKINE ,  Junichiro MAKIURA

IPC: B01J8/26 ,  B01J8/18 ,  C01B32/40 ,  C01G51/40 ,  C01G53/40

Abstract: A chemical looping system includes repeating: a generation process of reacting a reduced form of a material for the chemical looping system, which contains a first element selected from the group consisting of Co and Ni and a second element selected from the group consisting of In and Ga, with carbon dioxide so as to generate an oxidized form of the material for the chemical looping system, in which the second element is oxidized by the reaction, and carbon monoxide, and a reduction treatment of reacting the oxidized form with a reducing agent and thus reducing the second element having been oxidized in the generation process so as to thereby convert the oxidized form back into the reduced form.

公开(公告)号：US20250067457A1

公开(公告)日：2025-02-27

申请号：US18944070

申请日：2024-11-12

Applicant: Mitsubishi Electric Corporation ,  WASEDA UNIVERSITY

Inventor： Kazuki HAMADA ,  Noriko TAKAHASHI ,  Masanori HASHIMOTO ,  Shinichi TANABE ,  Hiroaki NAGASHIMA ,  Yuta FUKAWA

IPC: F24F11/64 ,  F24F11/52 ,  F24F110/10 ,  F24F110/20 ,  F24F110/70 ,  F24F140/60

Abstract: A satisfaction calculation device (10) calculates satisfaction with an air quality expressing an air environment of a space. A specific enthalpy calculation unit (110) acquires a temperature and a humidity of the space and calculates a specific enthalpy of the space. An air quality satisfaction calculation unit (120) acquires a carbon dioxide concentration of the space, decides a constant that takes a different value in accordance with the carbon dioxide concentration, and calculates satisfaction with the air quality as an air quality satisfaction (31) by using the specific enthalpy and the constant. The air quality satisfaction calculation unit (120) calculates, as the air quality satisfaction (31), a value obtained by adding a second constant to a value obtained by multiplying the specific enthalpy by a first constant.

公开(公告)号：US12227828B2

公开(公告)日：2025-02-18

申请号：US17507417

申请日：2021-10-21

Applicant: National University Corporation Nagaoka University of Technology ,  Atsuhito Sawabe ,  Yutaka Kimura ,  WASEDA UNIVERSITY ,  DISCO Corporation

Inventor： Hideo Aida ,  Atsuhito Sawabe ,  Yutaka Kimura ,  Jun Mizuno ,  Ryuji Oshima

IPC: C23C16/02 ,  C23C14/14 ,  C23C16/27 ,  C30B23/02 ,  C30B25/18 ,  C30B29/02 ,  C30B33/00

Abstract: Provided are a structure for producing a high-quality single crystal diamond, and a method for manufacturing the structure for producing diamond. A structure for producing a diamond is composed of a base substrate and an Ir thin film formed on the base substrate. The thermal expansion coefficient of the base substrate is 5 times or less of the thermal expansion coefficient of diamond and the melting point of the base substrate is 700° C. or higher. The peak angle in the X-ray diffraction pattern of the Ir thin film is different from the peak angle in the X-ray diffraction pattern of the base substrate.

公开(公告)号：US20250014853A1

公开(公告)日：2025-01-09

申请号：US18711014

申请日：2022-09-01

Applicant: MEIDENSHA CORPORATION ,  WASEDA UNIVERSITY

Inventor： Hayato OCHI ,  Rena TAKAHASHI ,  Suguru NODA ,  Kotaro YASUI ,  Hisashi SUGIME

IPC: H01J35/04 ,  H01J35/06

Abstract: An electric field emission device includes a vacuum vessel configured to include a vacuum chamber; an emitter positioned on one side in an axial direction of the chamber and including an electron generation portion facing another side in the axial direction; a target positioned on the other side of the chamber and facing the emitter; a guard electrode that is a cylindrical body, is fixed to the vacuum vessel, and has an opening portion; a support to move the emitter in the axial direction on an inner side of the guard electrode; and an electric field shield body formed of a conductor connected to the guard electrode. The electric field shield body partially overlaps the opening portion on a projection plane in the axial direction, and is formed in a shape partitioning the opening portion into a plurality of areas.

公开(公告)号：US20250014592A1

公开(公告)日：2025-01-09

申请号：US18895299

申请日：2024-09-24

Applicant: WASEDA UNIVERSITY

Inventor： Yoichi MATSUYAMA ,  Mao SAEKI ,  Shungo NOZAKI

IPC: G10L25/51 ,  G09B19/04 ,  G10L15/22

Abstract: Provided are an information processing method, an information processing program, and an information processing device for asking a question in consideration of the level of an evaluatee and improving the accuracy of determining the level of the evaluatee. An information processing device includes: an utterance control means for controlling utterance of a question at one level among a plurality of levels determined in advance to a user as an interlocutor; a voice recognition means for performing voice recognition on an answer of the user to the question; a breakdown detection means for detecting a breakdown of the user in the answer; and an ability determination means for determining a level of the user on the basis of at least a level at which the breakdown is detected.

公开(公告)号：US20240331846A1

公开(公告)日：2024-10-03

申请号：US18597923

申请日：2024-03-07

Applicant: WASEDA UNIVERSITY

Inventor： Jiro KATTO ,  Mayu ARAI ,  Kenji KANAI ,  Yutaka KATSUYAMA ,  Toshio SATO ,  Takuro SATO

IPC: G16H30/40 ,  G06T5/80

CPC classification number: G16H30/40 ,  G06T5/80 ,  G06T2207/10016 ,  G06T2207/20076 ,  G06T2207/30201

Abstract: A heart rate information concealed video transmission device includes a transmitter and a receiver. The transmitter compresses an input video and transmits the compressed video to a network, and the receiver decodes a received compressed stream, and attempts heart rate estimation by rPPG and generation of a biometric identifier. In order to invalidate heart rate estimation by a biological information processor, a corrected video generator outputs a corrected video in which small temporal variation of the input video is suppressed.

公开(公告)号：US20240308852A1

公开(公告)日：2024-09-19

申请号：US18678425

申请日：2024-05-30

Applicant: WASEDA UNIVERSITY ,  MEIJO NANO CARBON CO., LTD.

Inventor： Suguru NODA ,  Katsuya NAMIKI ,  Zihao ZHANG ,  Toshio OSAWA ,  Hisashi SUGIME

IPC: C01B32/162 ,  B01J4/00 ,  B01J6/00 ,  B82Y40/00

CPC classification number: C01B32/162 ,  B01J4/002 ,  B01J4/008 ,  B01J6/008 ,  B01J2204/002 ,  B82Y40/00

Abstract: Provided are a carbon nanotube production device and production method capable of realizing high-temperature heating of a catalyst raw material in a floating catalyst chemical vapor deposition (FCCVD) method, and improving the quality and yield of carbon nanotubes synthesized. A carbon nanotube production device 1 includes a synthesis furnace 2 for synthesizing carbon nanotubes; a catalyst raw material supplying nozzle 3 for supplying a catalyst raw material used to synthesize carbon nanotubes to the synthesis furnace 2; and a nozzle temperature adjusting unit 6 capable of setting a temperature of an inner portion 4 of the catalyst raw material supplying nozzle 3 higher than a temperature of a reaction field 5 of the synthesis furnace 2. By supplying to the synthesis furnace 2 the catalyst raw material that has been thermally decomposed after being heated to a temperate at which a catalyst metal will not yet be condensed, and by having the thermally decomposed catalyst raw material rapidly cooled to a CVD temperature at the synthesis furnace 2, microscopic catalyst metal particles will be generated at a high density in the space of the reaction field 5 such that carbon nanotubes having a small diameter can be vapor-grown at a high density.

公开(公告)号：US20240286118A1

公开(公告)日：2024-08-29

申请号：US18658017

申请日：2024-05-08

Applicant: Murata Manufacturing Co., Ltd. ,  Waseda University

Inventor： Naoya MORI ,  Yasushi SEKINE ,  Kaho NAGAKAWA

IPC: B01J23/755 ,  B01J35/33 ,  B01J37/10

CPC classification number: B01J23/755 ,  B01J35/33 ,  B01J37/10

Abstract: An electric field catalyst containing Ni, Y, Zr, and O and having a composition NixYyZr1-x-yO2, where 0.10≤x≤0.45 and 0.05≤ y≤0.30, a crystal structure of the electric field catalyst is free of a monoclinic crystal, Ni in a metal state and Ni in a hydroxide state are contained as the Ni, and a content A (at %) of the Ni in a metal state and a content B (at %) of the Ni in a hydroxide state with a total amount of Ni being 100 at % are such that: A>30 at %, and a ratio α of the content B to the content A is 0.15≤a≤0.63.

公开(公告)号：US20240235969A9

公开(公告)日：2024-07-11

申请号：US18473531

申请日：2023-09-25

Applicant: WASEDA UNIVERSITY

Inventor： Yutaka KATSUYAMA ,  Toshio SATO ,  Kazuhiko TAMESUE ,  Takuro SATO ,  Jiro KATTO

IPC: H04L43/067 ,  H04L41/16 ,  H04L43/106

CPC classification number: H04L43/067 ,  H04L41/16 ,  H04L43/106

Abstract: A system for transmitting data via a network with a transmission latency includes: a transmitting device configured to sequentially transmit data; a data prediction device configured to predict future data after a lapse of a prediction time equivalent to a latency time on a transmission line of the network based on time-series data in a given period transmitted from the transmitting device, using a prescribed prediction method, and transmit the future data; and a receiving device configured to receive the future data.