公开(公告)号：US12269742B2

公开(公告)日：2025-04-08

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

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：US12266803B2

公开(公告)日：2025-04-01

申请号：US17430569

申请日：2020-02-25

Applicant: WASEDA UNIVERSITY ,  ZEON CORPORATION

Inventor： Suguru Noda ,  Keisuke Hori ,  Tomotaro Mae ,  Yuta Hashizume

IPC: H01M4/80 ,  H01M4/134 ,  H01M4/38 ,  H01M4/62 ,  H01M4/66 ,  H01M10/052 ,  H01M10/054

Abstract: A secondary battery negative electrode according to the invention includes: a three-dimensional current collector formed of a self-supporting sponge-like structure of carbon nanotubes; a metal active material contained inside the three-dimensional current collector; and a plurality of seed particles contained inside the three-dimensional current collector and made of a material different from the metal active material, in which the secondary battery negative electrode does not include a foil of the metal active material.

公开(公告)号：US20250050300A1

公开(公告)日：2025-02-13

申请号：US18793757

申请日：2024-08-03

Applicant: SHIMADZU CORPORATION ,  WASEDA UNIVERSITY

Inventor： Yusuke NAGAI ,  Yosuke IWATA ,  Takeo SUGA

IPC: B01J19/00

Abstract: A synthesis system includes a first flow-path portion, a second flow-path portion, a third flow-path portion and a switcher. The first flow-path portion is connected to a first container in which a liquid raw material is containable. The second flow-path portion is connected to a second container in which a liquid raw material is containable. The third flow-path portion connects the first container and the second container to each other. To the third flow-path portion, a synthesis reaction device that produces a reactant from a liquid raw material is connected. The switcher is switchable between a flow-path state in which gas supplied by a gas supplier is guided to the first flow-path portion and a flow-path state in which gas supplied by the gas supplier is guided to the second flow-path portion.

公开(公告)号：US20240331089A1

公开(公告)日：2024-10-03

申请号：US18599086

申请日：2024-03-07

Applicant: WASEDA UNIVERSITY

Inventor： Jiro KATTO ,  Shion KOMATSU ,  Heming SUN ,  Yutaka KATSUYAMA ,  Toshio SATO ,  Takuro SATO

IPC: G06T3/4053 ,  G06T7/20 ,  H04N5/14

CPC classification number: G06T3/4053 ,  G06T7/20 ,  H04N5/145

Abstract: A video super-resolution device includes a down-sampler, video super-resolvers, and a selecting/averaging unit. The down-sampler divides an input low-resolution video into a plurality of frame rates. The video super-resolvers are video super-resolvers trained at different frame rates, and perform super-resolution of the low-resolution video. The selecting/averaging unit selects a video super-resolver according to the magnitude of an optical flow obtained as a result of video super-resolution. Specifically, in a case where the optical flow has a value smaller than 0.5 pixels, the selecting/averaging unit makes selection such as not adopting a result of video super-resolution at a high frame rate. Finally, the selecting/averaging unit obtains a mean value of the selected video super-resolution result, and outputs a final high-resolution video.

公开(公告)号：US11935668B2

公开(公告)日：2024-03-19

申请号：US17909384

申请日：2020-07-09

Applicant: Waseda University

Inventor： Suguru Noda ,  Rongbin Xie

IPC: H01B1/24 ,  C08L25/18 ,  H01B1/12 ,  H01B5/14 ,  H01L31/0216 ,  H01L31/0224 ,  H10K30/50 ,  H10K30/82 ,  H10K85/10 ,  H10K85/20

CPC classification number: H01B1/24 ,  C08L25/18 ,  H01B1/128 ,  H01B5/14 ,  H01L31/02167 ,  H01L31/022425 ,  H10K30/50 ,  H10K30/821 ,  H10K85/141 ,  H10K85/221 ,  Y02E10/50 ,  Y02E10/549

Abstract: Provided is a conductive material that is capable of achieving a high-electric conductivity, long-term stability under an atmospheric environment, heat and humidity stabilities, as well as a conductive film and a solar cell using the same. The conductive material includes a mixture of carbon nanotubes (CNTs) and polystyrene sulfonic acid (PSS acid). The element ratio (S/C ratio) of sulfur (S) to carbon (C) in the mixture may be from 0.001 to 0.1 in terms of the number of atoms. CNTs and PSS acid may make up a content percentage of 10 wt % or more in the mixture. These conductive films comprised of the conductive material 6 may have a weight per unit area of the CNTs in the range from 1 mg/m2 to 10000 mg/m2. The solar cell may include the conductive film 7, wherein the film is on the surface of a semiconductor.

公开(公告)号：US20230026457A1

公开(公告)日：2023-01-26

申请号：US17780718

申请日：2020-11-24

Applicant: WASEDA UNIVERSITY ,  NISSAN CHEMICAL CORPORATION

Inventor： Kenichi OYAIZU ,  Kan HATAKEYAMA ,  Tomoki AKAHANE ,  Choitsu GO ,  Takahiro KASEYAMA

IPC: H01M4/60 ,  H01M4/36 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0525 ,  C08F132/08

Abstract: Provided is an electrode material which is suitable for use as a material for forming electrodes for use in lithium ion secondary batteries, etc. and which makes it possible to heighten the rate characteristics of batteries. The electrode material is characterized by comprising a polymer having, in a side chain, a fluoflavin skeleton such as that shown by the formula and an inorganic active material, the polymer being contained in an amount of 1 mass % or less with respect to the solid components.

公开(公告)号：US11539185B2

公开(公告)日：2022-12-27

申请号：US17210098

申请日：2021-03-23

Applicant: DENSO CORPORATION ,  TOHOKU UNIVERSITY ,  WASEDA UNIVERSITY

Inventor： Masashige Sato ,  Taku Suzuki ,  Hiroshi Yasaka ,  Nobuhide Yokota ,  Tomohiro Kita

IPC: H01S5/0687 ,  H01S5/042 ,  H01S5/00 ,  H01S5/062

Abstract: A laser apparatus includes: a light source configured to generate laser light; and an optical negative feedback unit configured to narrow a spectral line of the laser light using optical negative feedback. A modulation signal is input to the light source to modulate a frequency of the laser light. A modulation amount in the frequency of the laser light is detected. A modulation sensitivity is calculated from (i) the modulation amount and (ii) an intensity of the modulation signal.

公开(公告)号：US20220289912A1

公开(公告)日：2022-09-15

申请号：US17636279

申请日：2020-08-28

Applicant: WASEDA UNIVERSITY ,  NIPPON SHOKUBAI CO., LTD.

Inventor： Kenichi OYAIZU ,  Motoyasu HIRAI ,  Yushun SUN ,  Kanta MATSUSHIMA ,  Jun-ichi NAKAMURA ,  Takeo KAWASE ,  Teruhisa FUJIBAYASHI,

IPC: C08G75/18 ,  C08K3/22

Abstract: The present invention aims to provide a polymeric material having reduced coloration in the visible light region, a high refractive index, and low optical dispersion. The present invention relates to a polymeric material having a sulfoxide structure in a main chain.

公开(公告)号：US20220283291A1

公开(公告)日：2022-09-08

申请号：US17563062

申请日：2021-12-28

Applicant: WASEDA UNIVERSITY

Inventor： Tetsuya KAWANISHI

IPC: G01S13/87 ,  G01S13/34 ,  G01S13/10 ,  G01S13/934 ,  G01S13/32

Abstract: To provide a foreign-object system which uses a plurality of radars, and which can detect a foreign object that is present on a runway or the like and which can suppress interference between radars. A foreign-object detection system including a first radar 11, a second radar 21 connected to the first radar via a network 33, and a signal source 31 for transmitting a synchronization signal to the first radar and the second radar via the network, said foreign-object detection system wherein interference generated due to a radar signal outputted from the second radar being reflected by a reflective body and inputted to the first radar is prevented by controlling a delay time that corresponds to |τ1i−τ2j|, where τ1i is the time taken for the synchronization signal to be transmitted from the signal source to the first radar, and τ2j is the time taken for the synchronization signal to be transmitted from the signal source to the second radar.

公开(公告)号：US20220274836A1

公开(公告)日：2022-09-01

申请号：US17632730

申请日：2020-07-27

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

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

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

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.