Patents Assigned to Tokyo Institute of Technology
  • Patent number: 12241103
    Abstract: Provided is a novel production system that does not involve, or can minimize, the transport of liquid ammonia in the production of an organic compound or the production of a microorganism by microbial fermentation. A production system for an organic compound or a microorganism includes: an ammonia synthesis apparatus in which an ammonia-containing gas is synthesized by reaction of a source gas containing hydrogen and nitrogen in the presence of a supported ruthenium catalyst; and a culture apparatus that cultures a microorganism having organic compound productivity using ammonia originating from the ammonia-containing gas obtained by using the ammonia synthesis apparatus.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: March 4, 2025
    Assignees: Ajinomoto Co., Inc., Tokyo Institute of Technology
    Inventors: Mitsuhiro Kishino, Hiroyuki Kojima, Hideo Hosono, Michikazu Hara, Masaaki Kitano, Toshiharu Yokoyama, Toru Numaguchi, Munenobu Ito, Kazuteru Yamada, Hiromi Noguchi
  • Patent number: 12187846
    Abstract: The invention provides a high-molecular-weight polyethylene glycol derivative that does not cause vacuolation of cells. The degradable polyethylene glycol derivative is represented by the following formula (1): wherein m is 1-7, n1 and n2 are each independently 45-682, p is 1-4, R is an alkyl group having 1-4 carbon atoms, Z is an oligopeptide with 2-8 residues composed of neutral amino acids excluding cysteine, Q is a residue of a compound having 2-5 active hydrogens, X is a functional group capable of reacting with a bio-related substance, and L1, L2, L3, L4 and L5 are each independently a single bond or a divalent spacer.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: January 7, 2025
    Assignees: NOF Corporation, Tokyo Institute of Technology
    Inventors: Hiroki Yoshioka, Masaki Kamiya, Yuji Yamamoto, Midori Hirai, Akiko Sasaki, Nobuhiro Nishiyama, Makoto Matsui, Hiroyasu Takemoto, Kazuki Miyauchi, Takahiro Nomoto, Keishiro Tomoda
  • Publication number: 20240428820
    Abstract: The present disclosure generally relates to a magnetic recording head comprising a read head. The read head comprises a first sensor disposed at a media facing surface (MFS) comprising at least one free layer, a second sensor disposed at the MFS comprising at least one free layer, a first spin generator spaced from the first sensor and recessed from the MFS, and a second spin generator spaced from the second sensor and recessed from the MFS. The first and second spin generators each individually comprises at least one spin orbit torque (SOT) layer. The SOT layer may comprise BiSb. The first and second sensors are configured to detect a read signal using a first voltage lead and a second voltage lead. The first and second spin generators are configured to inject spin current through non-magnetic layers to the first and second sensors using a plurality of current leads.
    Type: Application
    Filed: September 13, 2023
    Publication date: December 26, 2024
    Applicants: Western Digital Technologies, Inc., Tokyo Institute of Technology
    Inventors: Quang LE, Xiaoyong LIU, Brian R. YORK, Cherngye HWANG, Son T. LE, Hisashi TAKANO, Fan TUO, Hassan OSMAN, Nam Hai PHAM
  • Publication number: 20240420732
    Abstract: The present disclosure generally relates to a magnetic recording head comprising a read head. The read head comprises a sensor disposed at a media facing surface (MFS) and a spin generator spaced from the sensor and recessed from the MFS. The sensor and spin generators are disposed on a non-magnetic layer. The sensor comprises a free layer and the spin generator comprises at least one spin orbit torque (SOT) layer. The SOT layer may comprise topological material such as BiSb. The sensor is configured to detect a read signal using a first voltage lead and a second voltage lead. The spin generator is configured to inject spin current through the non-magnetic layer to the sensor using a first current lead and a second current lead. The shape of the non-magnetic layer is a triangular or trapezoidal shape to further concentrate spin current.
    Type: Application
    Filed: September 13, 2023
    Publication date: December 19, 2024
    Applicants: Western Digital Technologies, Inc., Tokyo Institute of Technology
    Inventors: Quang LE, Xiaoyong LIU, Brian R. YORK, Cherngye HWANG, Son T. LE, Hisashi TAKANO, Fan TUO, Hassan OSMAN, Nam Hai PHAM
  • Publication number: 20240278524
    Abstract: Provided are a conductive nano thin film having an excellent flexibility while ensuring an electric conductivity, and exhibiting a favorable expansion and contraction in the thickness direction and the surface direction and a favorable conformability to a curved surface of the body and to shape deformation; and a dielectric elastomer actuator using such conductive nano thin film. The conductive nano thin film of the present invention includes an elastomer layer and a carbon nanotube layer laminated on at least one surface of the elastomer layer, and the conductive nano thin film has a film thickness of smaller than 1,000 nm. The dielectric elastomer actuator of the present invention has the conductive nano thin film as an electrode.
    Type: Application
    Filed: July 29, 2022
    Publication date: August 22, 2024
    Applicant: Tokyo Institute of Technology
    Inventors: Toshinori FUJIE, Tatsuhiro HORII
  • Publication number: 20240267091
    Abstract: A wireless communication device includes an antenna section configured to be provided with a plurality of antenna units that transmit and receive n communication signals having different directivities, a multiplexer configured to be connected to the antenna section, and n signal transmitting and receiving units configured to be connected to the multiplexer, to generate transmission signals, to demodulate reception signals, and to be provided corresponding to the n communication signals. The multiplexer switches connections between the antenna section and the n signal transmitting and receiving units in a time-division manner in a sampling period shorter than a period of a symbol of each of n reception signals to sequentially sample the n reception signals for each of the directivities at a time of reception. The antenna section sequentially receives divided reception signals obtained by dividing the reception signal corresponding to the directivity in the sampling period.
    Type: Application
    Filed: June 8, 2022
    Publication date: August 8, 2024
    Applicant: Tokyo Institute of Technology
    Inventor: Kenichi Okada
  • Publication number: 20240226854
    Abstract: Provided is a method for manufacturing a catalyst with which it is possible to obtain a supported metal ammonia synthesis catalyst, in which there are restrictions in terms of producing method and producing facility, and particularly large restrictions for industrial-scale producing, in a more simple manner and so that the obtained catalyst has a high activity. This method for manufacturing an ammonia synthesis catalyst includes: a first step for preparing 12CaO·7Al2O3 having a specific surface area of 5 m2/g or above; a second step for supporting a ruthenium compound on the 12CaO·7Al2O3; and a third step for performing a reduction process on the 12CaO·7Al2O3 supporting the ruthenium compound, obtained in the second step. This invention is characterized in that the reduction process is performed until the average particle diameter of the ruthenium after the reduction process has increased by at least 15% in relation to the average particle diameter of the ruthenium before the reduction process.
    Type: Application
    Filed: March 21, 2024
    Publication date: July 11, 2024
    Applicants: Tokyo Institute of Technology, Tsubame BHB Co., Ltd.
    Inventors: Hideo Hosono, Masaaki Kitano, Toshiharu Yokoyama, Jiang Li, Shigeki Kawamura, Kazuhisa Kishida
  • Publication number: 20240217784
    Abstract: This crane control device controls the operation of a boom and a winch and transports a load from a start point to an end point, the control device comprising: an acquisition unit that acquires position information of the start point and position information of the end point; a horizontal trajectory generation unit that, by using an optimal control theory, generates a horizontal trajectory for a distal-end part of the boom as represented by a horizontal-direction component of a straight line linking the start point and the end point; a movement trajectory generation unit that generates a trajectory of movement of the boom for transporting the load so as to follow the horizontal trajectory, and a trajectory of rotational movement of the winch; and a movement control unit that controls the boom and the winch based on the trajectory of movement of the boom and the winch.
    Type: Application
    Filed: March 29, 2022
    Publication date: July 4, 2024
    Applicants: Tokyo Institute of Technology, TADANO LTD.
    Inventors: Hiroshi YAMAURA, Yoshiaki SUGAI, Kazuya TANIZUMI, Hiroki ICHIKAWA, Shinji NOGUCHI, Yuji TADANO
  • Publication number: 20240166513
    Abstract: A hydride ion conductor is represented by: MAMBH4-xFx??Formula (1), where MA is selected from the group consisting of Ca, Sr, and Ba, MB is selected from the group consisting of Mg and Ca, and is different from MA, and x is 0<x<4.
    Type: Application
    Filed: January 30, 2024
    Publication date: May 23, 2024
    Applicants: AGC Inc., Tokyo Institute of Technology
    Inventors: Takeya Mezaki, Yoshitake Toda, Kohta Yamada, Naoki Matsui, Guangzhong Jiang, Ryoji Kanno
  • Publication number: 20240140760
    Abstract: To provide a drive device for a self-propelled elevator which is capable of moving a car in a vertical direction and a horizontal direction with a simple configuration. The drive device for a self-propelled elevator includes: a rotating body which is rotatably coupled to a back face of a cab; and wheels which are provided on the rotating body so as to sandwich guide surfaces of a rail on a back face side of the cab, which generate, by friction between the wheels and the rail, a force that moves the cab in a vertical direction when a longitudinal direction of the rail is the vertical direction, and which generate, by a friction force between the wheels and the rail, a force that moves the cab in a horizontal direction when the longitudinal direction of the rail is the horizontal direction.
    Type: Application
    Filed: March 8, 2021
    Publication date: May 2, 2024
    Applicants: Mitsubishi Electric Corporation, Tokyo Institute of Technology
    Inventors: Yusuke SUGAHARA, Yukio TAKEDA, Takahiro ISHII, Takeshi MATSUMOTO, Masayuki KAKIO
  • Patent number: 11964260
    Abstract: Provided is a method for manufacturing a catalyst with which it is possible to obtain a supported metal ammonia synthesis catalyst, in which there are restrictions in terms of producing method and producing facility, and particularly large restrictions for industrial-scale producing, in a more simple manner and so that the obtained catalyst has a high activity. This method for manufacturing an ammonia synthesis catalyst includes: a first step for preparing 12CaO·7Al2O3 having a specific surface area of 5 m2/g or above; a second step for supporting a ruthenium compound on the 12CaO·7Al2O3; and a third step for performing a reduction process on the 12CaO·7Al2O3 supporting the ruthenium compound, obtained in the second step. This invention is characterized in that the reduction process is performed until the average particle diameter of the ruthenium after the reduction process has increased by at least 15% in relation to the average particle diameter of the ruthenium before the reduction process.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: April 23, 2024
    Assignees: Tokyo Institute of Technology, Tsubame BHB Co., Ltd.
    Inventors: Hideo Hosono, Masaaki Kitano, Toshiharu Yokoyama, Jiang Li, Shigeki Kawamura, Kazuhisa Kishida
  • Patent number: 11890347
    Abstract: A pH-responsive polymer formed of a biocompatible polymer to which a group which is electrically neutral under pH environments of more than 7 and which changes to be cationic at pH 7 or less is bonded.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: February 6, 2024
    Assignee: Tokyo Institute of Technology
    Inventors: Nobuhiro Nishiyama, Hiroyasu Takemoto, Abdul-Hackam Ranneh, Keishiro Tomoda, Takahiro Nomoto, Makoto Matsui
  • Publication number: 20240039023
    Abstract: This gel electrolyte contains a liquid, inorganic nanofibers, and a polymer obtained by polymerizing a compound which has an imidazolium salt having an alkenyl group represented by formula (1-1) and an imidazolium salt having an alkenyl group represented by formula (2-1) at both ends, and in which the compound is swelled by the liquid; the gel electrolyte exhibits proton conductivity equivalent to that of Nafion at room temperature, exhibits proton conductivity greater than or equal to that of Nafion at high temperatures exceeding 60° C., and has excellent strength. (In the formula, X? indicates monovalent anions, Y? represents mutually independent monovalent anions, and n represents an integer 1-20.
    Type: Application
    Filed: October 20, 2021
    Publication date: February 1, 2024
    Applicants: Nisshinbo Holdings Inc., Tokyo Institute of Technology
    Inventors: Gen Masuda, Hidetoshi Matsumoto
  • Patent number: 11795059
    Abstract: Provided are an atomic layer sheet that contains boron and oxygen as framework elements, is networked by nonequilibrium couplings having boron-boron bonds, and has a molar ratio of oxygen to boron (oxygen/boron) of less than 1.5, a laminated sheet containing a plurality of such atomic layer sheets and metal ions between ones of the sheets, and a thermotropic liquid crystal and a lyotropic liquid crystal containing these. In addition, there is provided a method for manufacturing an atomic layer sheet and/or a laminated sheet containing boron and oxygen, the method including: adding MBH4, where M represents an alkali metal ion, into a solvent containing an organic solvent in an inert gas atmosphere to prepare a solution; and exposing the solution to an atmosphere containing oxygen.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: October 24, 2023
    Assignee: Tokyo Institute of Technology
    Inventors: Tetsuya Kambe, Shotaro Imaoka, Aiko Watanabe, Kimihisa Yamamoto
  • Patent number: 11784599
    Abstract: An SR drive with an acoustic noise reduction system for reducing vibration and acoustic noise in a switched reluctance motor (SRM). The vibration and acoustic noise at specific harmonics of current excitation in SRM are in a proportional relationship with the radial force harmonics acting at SRM stator teeth. The acoustic noise reduction system includes a processor on which is installed an acoustic noise reduction application designed to derive an optimum current waveform for generating an average torque satisfying an optimum torque condition and creating radial force with minimum amplitude at the desired order of harmonics of current excitation. A reduction in the amplitude of the specific radial force harmonics utilizing the optimum current waveform minimizes the vibration and acoustic noise in the SRM. The acoustic noise reduction system applies turn-on and turn-off angles at the optimum current waveform to improve the system efficiency.
    Type: Grant
    Filed: February 6, 2022
    Date of Patent: October 10, 2023
    Assignees: Tokyo Institute of Technology, Turntide Technologies Inc.
    Inventors: Akira Chiba, Candra Adi Wiguna, Jihad Furqani, Piyush Desai
  • Patent number: 11750204
    Abstract: This atomic resonator for causing a resonance frequency by CPT resonance includes: a gas cell having alkali metal atoms enclosed; a photodetector configured to detect light having passed through the gas cell and convert the light to an electric signal; a high-frequency oscillator configured to receive the electric signal and output the signal after a frequency thereof is divided by two; and a laser light source configured to modulate and introduce, into the gas cell, light based on the signal output from the high-frequency oscillator. The high-frequency oscillator has an injection-locked frequency divider circuit including an acoustic resonator as an oscillation element.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: September 5, 2023
    Assignees: National Institute of Information and Communications Technology, Tokyo Institute of Technology
    Inventors: Motoaki Hara, Yuichiro Yano, Masatoshi Kajita, Tetsuya Ido, Hiroyuki Ito
  • Patent number: 11741348
    Abstract: Provided are a neural network circuit device, a neural network, a neural network processing method, and a neural network execution program, each of which does not require a bias. A binarized neural network circuit includes: an input part configured to allow input of an input node which allows input of input values x1-xn (xi) (binary), and input of weights w1-wn (wi) (binary); an XNOR gate circuit configured to receive the input values x1-xn and the weights w1-wn and to take XNOR logic; a sum circuit configured to sum XNOR logical values; a batch normalization circuit configured to correct a variance due to binarization, by extending a range of normalization and shifting a center thereof; and an activating function circuit configured to convert a signal B obtained by batch-normalizing a signal Y generated by taking the sum, by means of an activating function f sgn(B).
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: August 29, 2023
    Assignee: Tokyo Institute of Technology
    Inventor: Hiroki Nakahara
  • Publication number: 20230253613
    Abstract: A main object of the present disclosure is to provide a sulfide solid electrolyte with excellent water resistance. The present disclosure achieves the object by providing a sulfide solid electrolyte including a LGPS type crystal phase, and containing Li, Ge, P, and S, wherein: when an X-ray photoelectron spectroscopy measurement is conducted to a surface of the sulfide solid electrolyte, a proportion of Ge2+ with respect to total amount of Ge is 20% or more.
    Type: Application
    Filed: October 3, 2022
    Publication date: August 10, 2023
    Applicants: Tokyo Institute of Technology, Toyota Jidosha Kabushiki Kaisha
    Inventors: Ryoji KANNO, Satoshi HORI, Keiichi MINAMI, Shinya SHIOTANI
  • Publication number: 20230192953
    Abstract: An intermediate for production of a branched type hetero monodispersed polyethylene glycol which is represented by formula (2), the intermediate being represented by formula (3) or (40): where X1, L1, L3, Y1, Y2, and n are as defined herein.
    Type: Application
    Filed: February 13, 2023
    Publication date: June 22, 2023
    Applicants: Tokyo Institute of Technology, NOF Corporation
    Inventors: Kazushi Kinbara, Tomoki Uruga, Tomoyuki Ohtake
  • Patent number: 11669997
    Abstract: An image processing system, which estimates a position and a pose of a camera and performs three-dimensional reconstruction processing of an object having a cylindrical shape by using a photographed image acquired by photographing an inside of the object with the camera, includes a processor. The processor estimates a first center axis of the cylindrical shape by using a group of three-dimensional points obtained by reconstructing, in a three-dimensional space, a group of feature points extracted from the photographed image. In addition, the processor performs bundle adjustment for correcting the position and the pose of the camera and the coordinates of the group of three-dimensional points by using a condition for minimizing a total sum of differences between a radius of the cylindrical shape and respective distances from the first center axis to individual three-dimensional points that constitute the group of three-dimensional points.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: June 6, 2023
    Assignees: Tokyo Institute of Technology
    Inventors: Naoyuki Miyashita, Masatoshi Okutomi, Sho Kagami