Patents Assigned to Tokyo Institute of Technology
  • Publication number: 20220147596
    Abstract: The efficiency of quantum annealing on an LHZ model is improved. An arithmetic apparatus includes an arithmetic unit configured to adjust an intensity schedule function in quantum annealing of a constraint term expressed by many-body interactions in an LHZ model by a hybrid algorithm that uses a value of the intensity schedule function at one time point or each of a plurality of time points as a variational parameter.
    Type: Application
    Filed: November 5, 2021
    Publication date: May 12, 2022
    Applicants: NEC CORPORATION, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Yuki SUSA, Hidetoshi Nishimori
  • Publication number: 20220144631
    Abstract: This gas production system includes: a gas production device having a reactor forming a flow path for a treatment target gas, a first electrode and a second electrode to which voltage is applied, and a catalyst layer provided in the flow path and containing a catalyst; voltage generation means for generating voltage to be applied to the first electrode and the second electrode; and gas supply means for supplying the treatment target gas to the gas production device. The voltage generation means has frequency setting means for setting the frequency of the voltage in accordance with the treatment target gas, plasma generated between the first electrode and the second electrode is applied to the catalyst layer, and the treatment target gas is reformed to obtain a product gas.
    Type: Application
    Filed: April 23, 2019
    Publication date: May 12, 2022
    Applicants: Mitsubishi Electric Corporation, Tokyo Institute of Technology
    Inventors: Kyohei AKETAGAWA, Isamu HIRASHIKI, Tomohiro NOZAKI, Kenta SAKATA
  • Publication number: 20220143580
    Abstract: A molded sintered body containing a mayenite type compound, an inorganic binder sintered material, and a transition metal, wherein a content of the inorganic binder sintered material is 3 to 30 parts by mass with respect to 100 parts by mass of the molded sintered body, and the molded sintered body has at least one pore peak in each of a pore diameter range of 2.5 to 20 nm and a pore diameter range of 20 to 350 nm. A method for producing the molded sintered body, including mixing a precursor of a mayenite type compound and a raw material of an inorganic binder sintered material to prepare a mixture; molding the mixture to prepare a molded body of the mixture; firing the molded body to prepare a fired product; and supporting a transition metal on the fired product to produce a molded sintered body.
    Type: Application
    Filed: February 26, 2020
    Publication date: May 12, 2022
    Applicants: Tsubame BHB Co., Ltd., Tokyo Institute of Technology
    Inventors: Yasunori INOUE, Munenobu ITO, Kazuhisa KISHIDA, Hideo HOSONO, Masaaki KITANO, Toshiharu YOKOYAMA
  • Publication number: 20220132092
    Abstract: A camera calibration information acquisition device acquires captured images of a camera calibration target from two or more cameras, detects, from each image, a coordinate of a feature point in the image, calculates—an internal parameter for each camera by using the feature point, calculates, for each camera, a magnitude of error in the coordinate of the feature point, calculates a value for an external parameter of the cameras by using the magnitude of the error, the coordinate of the feature point, and an error function set so that a penalty for error in calculating the external parameter decreases as the magnitude of the error in the coordinate of the feature point in the image increases.
    Type: Application
    Filed: February 27, 2020
    Publication date: April 28, 2022
    Applicants: NEC CORPORATION, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Takashi SHIBATA, Masatoshi OKUTOMI, Masayuki TANAKA, Thapanapong RUKKANCHANUNT
  • Patent number: 11313732
    Abstract: A Ti—Ni-based alloy, which has a torsion angle for Interface I that is a junction plane between habit plane variants of a martensitic phase, of less than 1.00°; a wire, an electrically conductive actuator, and a temperature sensor, each of which uses that alloy; and a method of producing the Ti—Ni-based alloy.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: April 26, 2022
    Assignees: FURUKAWA TECHNO MATERIAL CO., LTD., TOKYO INSTITUTE OF TECHNOLOGY, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Sumio Kise, Fumiyoshi Yamashita, Misato Fujii, Tomonari Inamura, Hideki Hosoda, Yuri Shinohara, Masaki Tahara, Ryota Morishige, Keisuke Saito
  • Publication number: 20220119789
    Abstract: Provided as a mutant of ? glucuronidase suitable for homogeneous immunoassays is a ? glucuronidase mutant, wherein, in the amino acid sequence of Escherichia coli ? glucuronidase, methionine at position 516 is substituted with lysine, and tyrosine at position 517 is unsubstituted or substituted with a non-tyrosine aromatic amino acid.
    Type: Application
    Filed: January 23, 2020
    Publication date: April 21, 2022
    Applicant: TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Hiroshi UEDA, Jiulong SU, Tetsuya KITAGUCHI, Yuki OHMURO
  • Patent number: 11309834
    Abstract: A small-size high-power terahertz oscillator achieves a stable oscillation in a terahertz frequency band even at room temperature. The high-power terahertz oscillator has a structure in which a bow-tie antenna is disposed on a substrate, a cavity resonator, which includes two cavities, is disposed at a power supply portion of the bow-tie antenna, and a resonant tunneling diode (RTD) is disposed along a bottom of a wall of the cavity resonator, which defines the two cavities, and stably oscillates waves in the terahertz frequency band at room temperature by using the RTD, the bow-tie antenna and the cavity resonator.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: April 19, 2022
    Assignee: TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Masahiro Asada, Safumi Suzuki, Hiroki Tanaka
  • Patent number: 11309290
    Abstract: A semiconductor apparatus according to an embodiment of the present invention includes: a plurality of semiconductor chips that are laminated; and a plurality of penetration electrodes that penetrate in a lamination direction through the plurality of semiconductor chips and that electrically connect together the plurality of semiconductor chips, wherein a semiconductor chip has at least one sub-memory array, and a penetration electrode penetrates through an outer circumferential part of the sub-memory array.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: April 19, 2022
    Assignees: HONDA MOTOR CO., LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Koji Sakui, Takayuki Ohba
  • Publication number: 20220115684
    Abstract: A solid electrolyte having high electrical conductivity even in a low-temperature region is provided. A solid electrolyte containing a hexagonal perovskite-related compound, in which the compound is a compound represented by the following general formula (1), and an electrolyte layer and a battery using the solid electrolyte are disclosed. Ba7-?Nb(4?x-y)Mo(1+x)MyO(20+z) (1), in the formula (1), M is a cation of at least one element; a represents a Ba deficiency amount and represents a value of 0 or more and 0.5 or less, x represents a value of ?1.1 or more and 1.1 or less, y represents a value of 0 or more and 1.1 or less, and z represents an oxygen non-stoichiometry and represents a value of ?2.0 or more and 2.0 or less, provided that in the formula (1), |x|+y?0.01 is satisfied.
    Type: Application
    Filed: January 24, 2020
    Publication date: April 14, 2022
    Applicant: Tokyo Institute of Technology
    Inventors: Masatomo Yashima, Takafumi Tsujiguchi, Kotaro Fujii, Eiki Niwa, Yuichi Sakuda, Taito Murakami, Yuta Yasui, Yugo Kikuchi, Yuki Suzuki
  • Patent number: 11302379
    Abstract: A semiconductor apparatus according to an embodiment of the present invention includes: a plurality of semiconductor chips that are laminated; a plurality of penetration electrodes that penetrate in a lamination direction through the plurality of semiconductor chips and that electrically connect together the plurality of semiconductor chips; and a plurality of input/output elements that are configured to perform a signal input/output operation to the plurality of penetration electrodes, wherein the semiconductor chips are joined together via no bump, one of the plurality of input/output elements is connected to each of the plurality of penetration electrodes such that a functional element connected to each of the plurality of penetration electrodes performs an ON or OFF operation at a predetermined timing, and the input/output element connected to a first of two adjacent penetration electrodes among the plurality of penetration electrodes and the input/output element connected to a second of two adjacent pene
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: April 12, 2022
    Assignees: HONDA MOTOR CO., LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Koji Sakui, Takayuki Ohba
  • Patent number: 11276871
    Abstract: To provide an electrolyte membrane that exhibits high proton conductivity even at low humidity, the electrolyte membrane includes a composite membrane including: a microporous polyolefin membrane that has an average pore diameter of 1 to 1000 nm and a porosity of 50 to 90% and that can be impregnated with a solvent having a surface free energy of 28 mJ/m2 or more, and an electrolyte containing a perfluorosulfonic acid polymer having an EW of 250 to 850 loaded into the pores of the microporous polyolefin membrane, wherein the membrane thickness of the composite membrane is 1 to 20 ?m.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: March 15, 2022
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, TEIJIN LIMITED, KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Takeo Yamaguchi, Yuhei Oshiba, Hidenori Ohashi, Jin Tomatsu, Koji Furuya, Takao Ohno, Mami Nanbu
  • Patent number: 11268168
    Abstract: The present invention provides an artifactless superelastic alloy including a Au—Cu—Al alloy, the superelastic alloy containing Cu in an amount of 20 atom % or more and 40 atom % or less, Al in an amount of 15 atom % or more and 25 atom % or less, and Au as a balance, the superelastic alloy having a bulk magnetic susceptibility of ?24 ppm or more and 6 ppm or less. The Ni-free superelastic alloy of the present invention is capable of exhibiting superelasticity in a normal temperature range, and hardly generated artifacts in a magnetic field environment. The alloy can be produced by setting a casting time in a melting and casting step to a fixed time, and hot-pressing an alloy after casting to make material structures homogeneous.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: March 8, 2022
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Hideki Hosoda, Akira Umise, Kenji Goto
  • Publication number: 20220069288
    Abstract: An electrode active material for a nonaqueous secondary battery comprising: an alkali metal-transition metal composite oxide particles, a hole-doped graphenewith an anion. The electrode active material for a nonaqueous secondary battery may be manufactured by a method which includes obtaining a hole-doped graphene by bringing a graphene raw material into contact with a two-coordinate boron cation, and bringing the hole-doped graphene into contact with an alkali metal-transition metal composite oxide particle.
    Type: Application
    Filed: November 10, 2021
    Publication date: March 3, 2022
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, NICHIA CORPORATION
    Inventors: Takanori FUKUSHIMA, Yoshiaki SHOJI, Hiroaki TAKAHASHI, Takefumi SUMITOMO, Akihiro TOKAI
  • Patent number: 11261299
    Abstract: A block copolymer including a first block consisting of a polymer having a repeating structure of a structural unit (u1) containing no silicon atom, and a second block consisting of a polymer having a repeating structure of a structural unit (u2) containing a silicon atom, the second block containing a block (b21) consisting of a polymer having a repeating structure represented by general formula (u2-1), and a block (b22) consisting of a polymer having a repeating structure of a structural unit (u22) containing a silicon atom, and the block (b22) is positioned between the first block and the block (b21) (wherein RP211 represents an alkyl group, a halogenated alkyl group, a hydrogen atom, or an organic group having a polar group; and RP212 represents an organic group having a polar group).
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: March 1, 2022
    Assignees: Tokyo Ohka Kogyo Co., Ltd., Tokyo Institute of Technology
    Inventors: Akiyoshi Yamazaki, Daisuke Kawana, Takehiro Seshimo, Teruaki Hayakawa, Lei Dong, Rin Odashima
  • Publication number: 20220059753
    Abstract: Provided is a dielectric thin film including a metal oxide. The metal oxide includes bismuth, sodium, barium, and titanium, at least a part of the metal oxide is a tetragonal crystal having a perovskite structure, and a (100) plane of at least a part of the tetragonal crystal is oriented in a normal direction do of a surface of the dielectric thin film 3.
    Type: Application
    Filed: September 11, 2019
    Publication date: February 24, 2022
    Applicants: TDK Corporation, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Yusuke SATO, Mirai ISHIDA, Wakiko SATO, Hiroshi FUNAKUBO, Takao SHIMIZU, Miyu HASEGAWA, Keisuke ISHIHAMA
  • Publication number: 20220057338
    Abstract: A thin film has a band gap of 2.2 eV or more and in which a crystal includes an atomic vacancy and an electron, a microwave irradiation system configured to irradiate the thin film with a microwave in response to driving from outside, an excitation unit configured to excite the electron included in the thin film in response to driving from outside, and a detector configured to detect, as an electric signal, at least either one of an intensity of light outputted from the thin film when the electron transitions from an excited state to a ground state and a change in conductivity of the thin film based on excitation.
    Type: Application
    Filed: September 13, 2019
    Publication date: February 24, 2022
    Applicant: TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Mutsuko HATANO, Takayuki IWASAKI, Nobuhiko NISHIYAMA, Yuta MASUYAMA, Takuya MUROOKA
  • Patent number: 11253155
    Abstract: A brain activity estimation device includes a brain activity estimation portion. The brain activity estimation portion includes a blood-circulation-amount calculating unit and an estimation unit. The blood-circulation-amount calculating unit is configured to calculate time-series blood-circulation-amount data on a facial surface of a human based on RGB data of photographed image data on the facial surface acquired in time series. The RGB data is obtained by conducting RGB processing on the photographed image data. The RGB processing includes decomposing the photographed image data into three color components composed of an R component, a G component and a B component. The estimation unit is configured to estimate brain activity of the human based on a plurality of decomposition components obtained by decomposing the blood-circulation-amount data by singular value decomposition, principal component analysis, or independent component analysis.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: February 22, 2022
    Assignees: Daikin Industries, Ltd., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Junichiro Arai, Yasunori Kotani, Yoshimi Ohgami, Taro Tomatsu
  • Patent number: 11254638
    Abstract: A compound of the formula (III): wherein R21 is a hydrogen atom or an alkyl group; R22 is a hydrogen atom or an alkyl group; and R23 is a divalent organic group.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: February 22, 2022
    Assignees: DAIKIN INDUSTRIES, LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Tadashi Kanbara, Tsuyoshi Noguchi, Toshikazu Takata, Hiromitsu Sogawa, Shunsuke Monjiyama, Toyokazu Tsutsuba
  • Publication number: 20220050153
    Abstract: A magnetic measuring device includes: a determination part configured to identify four maximum inclination points in an average value in a visual field of a light detection magnetic resonance spectrum and configured to determined a degree of decrease in relative fluorescence intensity and a microwave frequency at each of the maximum inclination points; a setting part configured to set a reference decrease degree of the relative fluorescence intensity in a predetermined area and configured to set operating point frequency initial values at four points at which the reference decrease degree is achieved, near the microwave frequencies at the respective maximum inclination points; a frequency update part configured to update operating point frequencies at the four points; and a frequency correction part configured to input the updated operating point frequencies to a microwave oscillator as corrected operating point frequencies.
    Type: Application
    Filed: October 15, 2019
    Publication date: February 17, 2022
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, OSAKA UNIVERSITY
    Inventors: Mutsuko HATANO, Takayuki IWASAKI, Yoshie HARADA, Yuji HATANO
  • Publication number: 20220049237
    Abstract: This invention provides a novel carrier for enzyme immobilization and an immobilized enzyme. The carrier for enzyme immobilization according to an embodiment comprises a porous material and cellulose that has an amino group-containing substituent at an anomeric position and is immobilized on the porous material. The immobilized enzyme contains the carrier for enzyme immobilization and an enzyme immobilization on the cellulose. The carrier for enzyme immobilization is obtained by adding an acid to an aqueous solution in which cellulose having an amino group-containing substituent at an anomeric position is dissolved in an aqueous alkaline solution to deposit the cellulose in the presence of a porous material. The immobilized enzyme is obtained by immobilizing an enzyme on the cellulose.
    Type: Application
    Filed: October 17, 2019
    Publication date: February 17, 2022
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, DKS Co. Ltd.
    Inventors: Takeshi SERIZAWA, Toshiki SAWADA, Masahito NISHIURA