Patents by Inventor Tsuyoshi Yamamoto
Tsuyoshi Yamamoto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20240240291Abstract: A cemented carbide consists of: a first phase consisting of a plurality of tungsten carbide grains; and a second phase including cobalt, an average value of equivalent circle diameters of the tungsten carbide grains is 0.5 ?m to 1.2 ?m, on number basis, the tungsten carbide grains include less than or equal to 13% of first tungsten carbide grains each having an equivalent circle diameter of less than or equal to 0.3 ?m, on number basis, the tungsten carbide grains include less than or equal to 12% of second tungsten carbide grains each having an equivalent circle diameter of more than 1.3 ?m, in a histogram indicating a distribution of the equivalent circle diameters of the tungsten carbide grains, Fmax/Fmin is less than or equal to 7.0, Fmax/Fmin being a ratio of a maximum frequency Fmax to a minimum frequency Fmin.Type: ApplicationFiled: October 15, 2021Publication date: July 18, 2024Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Takahiro YAMAKAWA, Kazuhiro HIROSE, Katsuya UCHINO, Tsuyoshi YAMAMOTO
-
Patent number: 12021520Abstract: A resonator, an oscillator, and a quantum computer in which the area occupied by the circuit can be reduced is provided. A resonator (100) includes a loop circuit (110) in which a first superconducting line (101), a first Josephson junction (103), a second superconducting line (102), and a second Josephson junction (104) are connected in a ring shape, and a capacitor (120). The capacitor (120) and the loop circuit (110) are connected in a ring shape.Type: GrantFiled: June 26, 2020Date of Patent: June 25, 2024Assignee: NEC CORPORATIONInventors: Tsuyoshi Yamamoto, Tomohiro Yamaji, Yoshihito Hashimoto
-
Publication number: 20240202560Abstract: A magnetic flux bias circuit includes an input signal line to which an input signal indicating an applied magnetic flux using a digital value is input, a first current control line, a second current control line, and a third current control line to which a clock signal according to the input signal is input, a digital/analog conversion unit converting the input signal into an analog signal using a circuit including a quantum flux parametron circuit on the basis of the input signal input to the input signal line and the clock signal input to the first current control line, the second current control line, and the third current control line, and a magnetic flux application unit applying an applied magnetic flux to a controlled object on the basis of the analog signal output from the digital/analog conversion unit.Type: ApplicationFiled: April 13, 2022Publication date: June 20, 2024Applicants: NEC CORPORATION, National Institute of Advanced Industrial Science and TechnologyInventors: Naoki TAKEUCHI, Nobuyuki YOSHIKAWA, Yoshihito HASHIMOTO, Tsuyoshi YAMAMOTO, Fuminori HIRAYAMA
-
Publication number: 20240196521Abstract: A sample holder includes a base comprising a support structure and a printed circuit board (PCB) in contact with the base. The PCB includes: a dielectric; a front-surface ground (GND) formed on a front surface of the dielectric; a back-surface GND formed on a back surface of the dielectric; a through hole penetrating from the front-surface GND to the back-surface GND, the through hole in which a chip is disposed, and a conductor that electrically connects the front-surface GND and the back-surface GND on an end face of the through hole. At least a part of the base below the through hole has a cavity. The support structure that supports a surface of the chip and is electrically connected to the base. The support structure is disposed in the cavity.Type: ApplicationFiled: February 27, 2024Publication date: June 13, 2024Applicant: NEC CorporationInventors: Yoshihito Hashimoto, Tsuyoshi Yamamoto, Kohei Matsuura
-
Patent number: 12009571Abstract: The present invention relates to a window glass for vehicle, which includes a glass plate and an antenna provided to the glass plate and capable of receiving electromagnetic waves of AM broadcasting and FM broadcasting, in which the antenna includes an antenna element and a feeding portion electrically connected to the antenna element, the antenna element lies at a distance of longer than 20 mm from a metallic portion of the vehicle in a vehicle-mounted state, the antenna element includes at least one horizontal portion extending in an approximately horizontal direction in the vehicle-mounted state, the horizontal portion has an open end or has a bent portion bending apart therefrom which has an open end, and the horizontal portion has a total element length that is at least 3/4 of an overall length of the antenna element.Type: GrantFiled: July 29, 2022Date of Patent: June 11, 2024Assignee: AGC INC.Inventors: Tsuyoshi Yamamoto, Satoshi Tokunaga, Haruto Sanda
-
Patent number: 11978868Abstract: A terminal mounted in advance on a battery of an instrument that is a management target wirelessly transmits a battery state obtained by detecting an electric property related to a remaining battery amount of the battery and a terminal ID for identifying the terminal, and a management device displays remaining amount information related to the battery remaining amount on a screen based on the terminal ID and the battery state received from the terminal. This allows a user to easily figure out the remaining amount of a battery being used in an existing instrument.Type: GrantFiled: June 21, 2019Date of Patent: May 7, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Toshishige Shimamura, Yuichi Okabe, Tsuyoshi Yamamoto, Yuzo Ishii
-
Patent number: 11956889Abstract: A sample holder includes a base comprising a support structure and a printed circuit board (PCB) in contact with the base. The PCB includes: a dielectric; a front-surface ground (GND) formed on a front surface of the dielectric; a back-surface GND formed on a back surface of the dielectric; a through hole penetrating from the front-surface GND to the back-surface GND, the through hole in which a chip is disposed, and a conductor that electrically connects the front-surface GND and the back-surface GND on an end face of the through hole. At least a part of the base below the through hole has a cavity. The support structure that supports a surface of the chip and is electrically connected to the base. The support structure is disposed in the cavity.Type: GrantFiled: May 17, 2022Date of Patent: April 9, 2024Assignee: NEC CORPORATIONInventors: Yoshihito Hashimoto, Tsuyoshi Yamamoto, Kohei Matsuura
-
Patent number: 11955929Abstract: An oscillation apparatus includes: an oscillator including a resonator and a magnetic-field generating unit, the resonator including a loop circuit and a capacitor, the loop circuit including a first superconducting line, a first Josephson junction, a second superconducting line, and a second Josephson junction connected in a ring shape, the magnetic-field generating unit being configured to apply a magnetic field to the loop circuit, and the oscillator being configured to perform parametric oscillation; a read-out unit for reading out an internal state of the oscillator; and a filter configured to restrict transmission of a signal in a predetermined frequency band. A circuit in which the capacitor and the loop circuit are connected in a ring shape is connected to the read-out unit through the filter.Type: GrantFiled: June 26, 2020Date of Patent: April 9, 2024Assignee: NEC CORPORATIONInventors: Tsuyoshi Yamamoto, Yoshihito Hashimoto
-
Patent number: 11916513Abstract: An oscillator in which crosstalk can be reduced is provided. An oscillator includes a SQUID, a transmission line connected to the SQUID, a ground plane, and a first connection circuit disposed in a vicinity of a node of an electric field of a standing wave that is generated when the oscillator is oscillating, the first connection circuit connecting parts of the ground plane located on both sides of the transmission line to each other.Type: GrantFiled: April 13, 2023Date of Patent: February 27, 2024Assignee: NEC CORPORATIONInventors: Yoshihito Hashimoto, Tsuyoshi Yamamoto, Tomohiro Yamaji
-
Patent number: 11915100Abstract: A resonator, an oscillator, and a quantum computer capable of preventing oscillation conditions for generating a parametric oscillation from becoming complicated are provided. A resonator includes at least one loop circuit in which a first superconducting line, a first Josephson junction, a second superconducting line, and a second Josephson junction are connected in a ring shape, in which critical current values of the first and second Josephson junctions are different from each other.Type: GrantFiled: December 9, 2020Date of Patent: February 27, 2024Assignee: NEC CORPORATIONInventors: Tomohiro Yamaji, Tsuyoshi Yamamoto
-
Publication number: 20240016068Abstract: A superconducting quantum circuit includes: a first resonator having a superconducting quantum interference device and a capacitor that forms a closed loop together with the superconducting quantum interference device; and a control line being connected to a first control port and magnetically coupled to the superconducting quantum interference device, wherein the control line includes at least a first line having a characteristic impedance that indicates a first impedance value, and a second line being provided closer to a portion magnetically coupled to the superconducting quantum interference device than the first line and having a characteristic impedance that indicates a second impedance value being different from the first impedance value.Type: ApplicationFiled: June 26, 2023Publication date: January 11, 2024Applicants: NEC Corporation, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Yohei KAWAKAMI, Yoshiro URADE, Yoshihito HASHIMOTO, Tsuyoshi YAMAMOTO
-
Publication number: 20230422636Abstract: A quantum device capable of suppressing the deterioration of the performance thereof is provided. A quantum device (1) includes a plurality of first conductors (2), a plurality of second conductors (4), and a conductor layer (6). The first conductors (2), the second conductors (4), and the conductor layer (6) are formed of superconducting materials. An oxide film (8) is formed between the first conductors (2) and the second conductors (4). A Josephson junction (10) is formed by a part of one of the plurality of first conductors (2), a part of one of the plurality of second conductors (4), and the oxide film (8). The one first conductor (2) constituting the Josephson junction (10) and the conductor layer (6) are connected to each other directly or through another conductor. The one second conductor (4) constituting the Josephson junction (10) and the conductor layer (6) are connected to each other directly or through another conductor.Type: ApplicationFiled: December 4, 2020Publication date: December 28, 2023Applicant: NEC CorporationInventors: Tetsuro Sato, Tsuyoshi Yamamoto
-
Patent number: 11850806Abstract: A method for manufacturing an air bag includes forming a bag portion surrounded by a welded portion extending in an annular shape by pressing at least one welding mold against two sheet materials arranged to be stacked from a stacking direction of the sheet materials. The welding mold is pressed against the sheet materials to form the welded portion including a welding bead portion protruding to an inside of the bag portion between the sheet materials. A pressing surface of the welding mold against the sheet materials is provided with a slope portion facing in the stacking direction of the sheet materials and in a direction of the inside of the bag portion at a position further on an outside of the bag portion than a position at which the welding bead portion is formed.Type: GrantFiled: March 18, 2021Date of Patent: December 26, 2023Assignee: AISIN CORPORATIONInventors: Yasuhito Kurematsu, Makoto Sakai, Ryosuke Mizuno, Satoshi Masuda, Tomokazu Seki, Masaaki Hasegawa, Tsuyoshi Yamamoto, Tomoko Kanbara
-
Publication number: 20230363293Abstract: A superconducting quantum circuit apparatus includes a resonator including a SQUID including at least two Josephson junctions in a loop, a magnetic field application part that includes a conductor portion, a current passing therethrough generating a magnetic flux penetrating through the SQUID, the current supplied from a current control part, and a parallel LC circuit including an inductor and a capacitor each made of a superconducting material, the inductor and the capacitor having respective one ends connected in common to the magnetic field application part and respective other ends connected in common to a current path from the current control part.Type: ApplicationFiled: January 26, 2023Publication date: November 9, 2023Applicant: NEC CorporationInventors: Akira Miyata, Tsuyoshi Yamamoto
-
Publication number: 20230299719Abstract: An oscillator in which crosstalk can be reduced is provided. An oscillator includes a SQUID, a transmission line connected to the SQUID, a ground plane, and a first connection circuit disposed in a vicinity of a node of an electric field of a standing wave that is generated when the oscillator is oscillating, the first connection circuit connecting parts of the ground plane located on both sides of the transmission line to each other.Type: ApplicationFiled: April 13, 2023Publication date: September 21, 2023Applicant: NEC CorporationInventors: Yoshihito HASHIMOTO, Tsuyoshi Yamamoto, Tomohiro Yamaji
-
Publication number: 20230276717Abstract: Provided are an oscillator and a quantum computer capable of suppressing an occupied area of a circuit. An oscillator (300) includes a resonator (100) including a plurality of loop circuits in which a first superconducting line (112a), a first Josephson junction (111a), a second superconducting line (112b), and a second Josephson junction (111b) are annularly connected, and a magnetic field application circuit (200) including an electrode that goes around in a predetermined shape and configured to apply a magnetic field to the loop circuit, in which the electrode is arranged so as to face at least two of the loop circuits.Type: ApplicationFiled: June 5, 2020Publication date: August 31, 2023Applicant: NEC CorporationInventors: Akira MIYATA, Katsumi KIKUCHI, Suguru WATANABE, Takanori NISHI, Hideyuki SATOU, Tomohiro YAMAJI, Tsuyoshi YAMAMOTO, Yoshihito HASHIMOTO
-
Publication number: 20230237362Abstract: Provided is a quantum device capable of suppressing reduction in performance of quantum bit even when a quantum chip is flip-chip mounted on an interposer. A quantum chip (10) is flip-chip mounted on an interposer (20) by a bump (30). A coplanar line (12) coupling adjacent quantum bits is formed on the quantum chip (10). A gap (22) is provided, in the interposer (20), at a location facing a center conductor (12a) of the coplanar line (12). A second ground electrode (24) is formed around gap (22). The interposer (20) has a connection electrode (40) connecting the second ground electrode (24) around the gap (22). A bump (30A) formed in the vicinity of the connection electrode (40) is connected to the first ground electrode (12b) and the second ground electrode (24).Type: ApplicationFiled: June 5, 2020Publication date: July 27, 2023Applicant: NEC CorporationInventors: Akira MIYATA, Katsumi KIKUCHI, Suguru WATANABE, Takanori NISHI, Hideyuki SATOU, Tomohiro YAMAJI, Tsuyoshi YAMAMOTO, Yoshihito HASHIMOTO
-
Publication number: 20230171908Abstract: A sample holder includes: a pedestal made of metal; and a PCB (Printed Circuit Board) placed on the pedestal. The PCB includes a through opening that penetrates from a front surface to a rear surface of the PCB. The pedestal includes a cavity bottomed and with a top of the pedestal opened, the cavity formed at a portion corresponding to directly under the through opening on a side of the pedestal on which the PCB is placed. As a configuration on the side on which the PCB is placed, viewed from above, a part of the cavity is protruded outward from the through opening.Type: ApplicationFiled: November 28, 2022Publication date: June 1, 2023Applicant: NEC CorporationInventors: Yoshihito HASHIMOTO, Tsuyoshi Yamamoto
-
Patent number: 11658613Abstract: An oscillator in which crosstalk can be reduced is provided. An oscillator includes a SQUID, a transmission line connected to the SQUID, a ground plane, and a first connection circuit disposed in a vicinity of a node of an electric field of a standing wave that is generated when the oscillator is oscillating, the first connection circuit connecting parts of the ground plane located on both sides of the transmission line to each other.Type: GrantFiled: January 12, 2022Date of Patent: May 23, 2023Assignee: NEC CORPORATIONInventors: Yoshihito Hashimoto, Tsuyoshi Yamamoto, Tomohiro Yamaji
-
Publication number: 20230113556Abstract: The present invention provides an antisense oligomer having the base sequence depicted in SEQ ID NO: 26, an antisense oligomer having a base sequence resulting from substitution, deletion, insertion, or addition of 1 to 6 bases in the base sequence depicted in SEQ ID NO: 26, a pharmaceutically acceptable salt thereof, or a pharmaceutically acceptable hydrate thereof, an oligonucleotide conjugate in which the antisense oligomer is bound with a molecule capable of binding to an asialoglycoprotein receptor, and a pharmaceutical composition containing the same.Type: ApplicationFiled: March 26, 2021Publication date: April 13, 2023Applicants: NATIONAL CEREBRAL AND CARDIOVASCULAR CENTER, OSAKA UNIVERSITYInventors: Mariko SHIBA, Tsuyoshi YAMAMOTO, Fumito WADA, Tadayuki KOBAYASHI, Keisuke TACHIBANA, Satoshi OBIKA