Patents by Inventor Yusuke Kawai

Yusuke Kawai 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: 20240112571
    Abstract: A congestion prediction device, a congestion prediction method, and a storage medium are provided. A mapping outputs an output variable when input variables are input to the mapping. The output variable indicates a degree of congestion in a predetermined specific area. The mapping is learned in advance by machine learning. The input variables include congestion variables. Each of the congestion variables indicates a degree of congestion in the specific area at regular time intervals within a specific period. The output variable indicates a degree of congestion after a lapse of the regular time interval from an end time of the specific period.
    Type: Application
    Filed: September 26, 2023
    Publication date: April 4, 2024
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ayumu SHIOMI, Atsushi MIYAGAWA, Hiroki TAKEUCHI, Toshiyuki KAWAI, Ryosuke FUKAYA, Hiroyuki TOKITA, Yusuke IKENOUE, Tsukasa KATO, Katsuhisa YOSHIKAWA, Yuta ICHIJYO, Takayuki AKAISHI, Shintaro KAWAI
  • Publication number: 20240075387
    Abstract: Provided is a non-transitory computer-readable recording medium having stored therein a game control program controlling a video game in which characters battle against each other in a three-dimensional virtual space, and causing a computer to execute: determining whether a second character has received a predetermined attack from a first character when the first character is battling against the second character, who is an enemy of the first character; and controlling the second character to perform a predetermined move such as a knockback in a direction toward a troop to which the second character belongs, in a case where the second character has received the predetermined attack.
    Type: Application
    Filed: June 29, 2023
    Publication date: March 7, 2024
    Inventors: Yuishin TAKAFUJI, Yusuke NORITA, Kenta SHIRAISHI, Masanori KAWAI
  • Publication number: 20240068380
    Abstract: There is provided a pit initiation evaluation system or the like capable of predicting pit initiation effectively and at low cost. In a pit initiation evaluation system of an embodiment, a pit initiation evaluation unit creates and retains, based on a dry-wet alternate time data, a deposit impurity concentration data, and a pit initiation data on pitting corrosion initiated in each of a plurality of turbine stages when an operation is actually performed in the steam turbine, a pit initiation evaluation table presenting a relationship between a dry-wet alternate time, a deposit impurity concentration, and pit initiation. Further, the pit initiation evaluation unit is configured to evaluate, by using the pit initiation evaluation table, pitting corrosion to be initiated in each of the plurality of turbine stages in an operation planned for the steam turbine.
    Type: Application
    Filed: November 2, 2022
    Publication date: February 29, 2024
    Applicant: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Yuka TSUKADA, Kazuhiro SAITO, Yusuke SUZUKI, Yoshikazu NINOMIYA, Osamu TANAKA, Yasuteru KAWAI, Shinichi TERADA, Makoto SASAKI
  • Publication number: 20230336028
    Abstract: A power transmission device includes power transmission coils, at least one power supply circuit, a communicator, and a control circuit. The power transmission coils transmit power to a power reception device via a power reception coil. The at least one power supply circuit supplies AC power to the power transmission coils, respectively. The communicator receives a signal indicating a power reception status of the power reception device from the power reception device. According to the power reception status, the control circuit selects a power transmission coil with a highest efficiency of power transmission to the power reception device among the power transmission coils to serve as the power transmission coil for power transmission to the power reception device, and controls the at least one power supply circuit so that AC power is supplied to the selected power transmission coil and is not supplied to an unselected power transmission coil.
    Type: Application
    Filed: March 9, 2023
    Publication date: October 19, 2023
    Applicant: OMRON Corporation
    Inventors: Takashi OHTA, Yusuke Kawai, Goro Nakao
  • Publication number: 20230324175
    Abstract: A mounting structure includes a micro vibrator and a mounting substrate. The micro vibrator includes a curved surface portion having an annular curved surface and a connecting portion extending from the curved surface portion toward an inner center position of the curved surface portion. The micro vibrator is disposed so that the connecting portion is bonded to the mounting substrate and the curved surface portion is in a hollow state free from other elements. The mounting substrate includes a plurality of electrode portions that are arranged to face and surround a rim of the curved surface portion of the micro vibrator, and spaced apart from each other, the rim being an end of the curved surface portion opposite to the connecting portion. Further, the mounting substrate includes a guard electrode.
    Type: Application
    Filed: March 24, 2023
    Publication date: October 12, 2023
    Inventors: Hideaki NISHIKAWA, Yusuke KAWAI, Takahiko YOSHIDA, Yuuki INAGAKI, Shota HARADA, Keitaro ITO, Katsuaki GOTO
  • Publication number: 20230288203
    Abstract: In a mounting structure, a micro vibrator has: a curved surface portion having a hemispherical curved surface; a connecting portion extending from the curved surface portion toward a center of a hemispherical shape of the curved surface portion; and a surface electrode covering at least a part of the connecting portion and at least a part of the curved surface portion. A mounting substrate has two or more wirings and a part of the micro vibrator is connected to the mounting substrate. The wirings each have an electrode connection portion connected to a portion of the surface electrode covering the connecting portion at an end. The two or more wirings include a voltage application wiring and a voltage detection wiring. The voltage application wiring is spaced away from the voltage detection wiring on the mounting substrate.
    Type: Application
    Filed: February 15, 2023
    Publication date: September 14, 2023
    Inventors: SHOTA HARADA, KEITARO ITO, HIDEAKI NISHIKAWA, YUUKI INAGAKI, KATSUAKI GOTO, TAKAHIKO YOSHIDA, YUSUKE KAWAI
  • Patent number: 11740087
    Abstract: A micro vibration body includes a curved surface portion, a recessed portion recessed from the curved surface portion, a bottom surface protruding portion protruding from a bottom surface of the recessed portion, and a through hole in the bottom surface protruding portion. A mounting substrate has a positioning recess, into which the bottom surface protruding portion is inserted, and electrode portions surrounding the inner frame portion. A joining member is in the positioning recess and joins the bottom surface protruding portion with the mounting substrate. The bottom surface is in contact with a region of the mounting substrate around the positioning recess. The bottom surface protruding portion has a tip end surface that is at a distance from the positioning recess. The joining member at least partially enters the through hole and is electrically connected to the conductive layer.
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: August 29, 2023
    Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, MIRISE Technologies Corporation
    Inventors: Shota Harada, Keitaro Ito, Katsuaki Goto, Yuuki Inagaki, Takahiko Yoshida, Yusuke Kawai, Teruhisa Akashi, Hirofumi Funabashi
  • Patent number: 11733044
    Abstract: An inertial sensor includes a lower substrate and an upper substrate. The upper substrate includes a micro oscillator, electrodes and a pad, which are independent of each other. The micro oscillator includes a curved surface portion, a joint portion recessed inward from an apex of the curved surface portion and joined to a support portion of the lower substrate, a rim at an end of the curved surface portion and a conductive film covering the micro oscillator. The curved surface portion is in an aerial state. The rim is made of the same material as the electrodes, located on a virtual flat plane formed by the electrodes, and apart from and surrounded by the electrodes. A portion of the conductive film that covers the joint portion is electrically bonded to a lower metal film covering the support portion.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: August 22, 2023
    Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, MIRISE Technologies Corporation
    Inventors: Yuuki Inagaki, Yusuke Kawai, Takahiko Yoshida, Shota Harada, Katsuaki Goto, Keitaro Ito
  • Publication number: 20230201877
    Abstract: A micro-electro-mechanical systems (MEMS) sensor includes a substrate, a diaphragm portion and a piezoelectric film. The diaphragm portion is located at the substrate. The piezoelectric film is located on the diaphragm portion. The piezoelectric film is made of scandium aluminum nitride. A carbon concentration of the piezoelectric film is 2.5 atomic percent or less while an oxygen concentration of the piezoelectric film is 0.35 atomic percent or less.
    Type: Application
    Filed: February 16, 2023
    Publication date: June 29, 2023
    Inventors: Tetsuya ENOMOTO, Akihiko TESHIGAHARA, Hideo YAMADA, Yusuke KAWAI
  • Publication number: 20230187983
    Abstract: A power transmitting apparatus included in the contactless power feeding apparatus includes a power supply circuit that supplies AC power having a predetermined drive frequency to a transmission coil for supplying power to a power receiving apparatus, a first coil and a first capacitor that are connected between the power supply circuit and the transmission coil, a second capacitor that is connected at first end to the first capacitor and is connected at a second end to the second end of the transmission coil, and a control circuit. Also, the power receiving apparatus includes a receiver coil for receiving power, and a resonant circuit that includes a resonance capacitor that resonates together with the receiver coil. Also, the control circuit of the power transmitting apparatus controls the power supply circuit such that the predetermined drive frequency falls within a predetermined frequency range including a resonance frequency of the resonant circuit.
    Type: Application
    Filed: November 22, 2022
    Publication date: June 15, 2023
    Applicant: OMRON Corporation
    Inventors: Goro NAKAO, Hiroaki OTA, Yuki ITO, Kenichi TABATA, Atsushi NOMURA, Daiki ANDO, Ken ONOZAKA, Yusuke KAWAI, Mitsunori SUGIURA
  • Publication number: 20230187982
    Abstract: A power transmitting apparatus included in a contactless power feeding apparatus includes a power supply circuit that supplies AC power having a predetermined drive frequency to a transmission coil for supplying power to a power receiving apparatus, a power receiving circuit that receives returning power transmitted from the power receiving apparatus, a control circuit that controls, according to a voltage of the returning power, the power supply circuit such that an output voltage of the power receiving apparatus is in a predetermined allowable range. Also, the power receiving apparatus includes a resonant circuit for receiving power via the transmission coil of the power transmitting apparatus, a rectifier circuit that rectifies power received via the resonant circuit, and a power transmitting circuit that transmits the returning power according to a voltage of power output from the rectifier circuit to the power transmitting apparatus.
    Type: Application
    Filed: November 21, 2022
    Publication date: June 15, 2023
    Applicant: OMRON Corporation
    Inventors: Goro NAKAO, Hiroaki OTA, Ken ONOZAKA, Yuki ITO, Taichi MISHIMA, Yusuke KAWAI
  • Patent number: 11652368
    Abstract: A power transmission device includes a transmission coil that supplies power to a power reception device, a power supply circuit that converts DC power supplied from a DC power source via a plurality of switching elements connected in a full bridge shape or a half bridge shape between DC power sources and the transmission coil into AC power and supplies the AC power to the transmission coil, a phase adjustment circuit having an LC series circuit connected in parallel with the transmission coil and a switching element connected in series with the LC series circuit, and a control circuit that controls switching on and off of the switching element of the phase adjustment circuit in accordance with a measured value of an amount of current when any of the plurality of switching elements of the power supply circuit is turned off by a current detection circuit.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: May 16, 2023
    Assignee: OMRON Corporation
    Inventors: Goro Nakao, Atsushi Nomura, Yusuke Kawai, Masanobu Nakajo
  • Patent number: 11637451
    Abstract: A power transmitter device of a non-contact power feeding device includes a transmitter coil configured to supply power to the power receiver device, a power supply circuit including a plurality of switching elements connected between a DC power supply and the transmitter coil in a full-bridge configuration or a half-bridge configuration. The power supply circuit may be configured to switch the plurality of switching elements to an on or off state at a switching frequency to convert DC power supplied from the DC power supply into AC power having the switching frequency and supply the AC power to the transmitter coil, and a phase control circuit including at least one LC series circuit connected to both ends of the transmitter coil.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: April 25, 2023
    Assignee: OMRON Corporation
    Inventors: Goro Nakao, Kenichi Tabata, Yusuke Kawai, Atsushi Nomura, Takahiro Takeyama, Masanobu Nakajo
  • Publication number: 20230061042
    Abstract: In a method for manufacturing a micro vibration body having a three-dimensional curved surface, a mold defining a recess part is prepared, and a plate-shaped reflow material is arranged on the mold so as to cover the recess part. Pressure of a space defined by the recess part covered with the reflow material is reduced, and the reflow material is deformed by heating from an upper surface side opposite to a lower surface facing the recess part and by means of the pressure reduced. When the reflow material is deformed, a part of the mold is heated and / or cooled. As another example, when the reflow material is deformed, a mold having a different heat capacity portion is used to generate a temperature gradient in the mold.
    Type: Application
    Filed: August 9, 2022
    Publication date: March 2, 2023
    Inventors: Katsuaki GOTO, Shota HARADA, Keitaro ITO, Yuuki INAGAKI, Takahiko YOSHIDA, Yusuke KAWAI
  • Publication number: 20220373332
    Abstract: An inertial sensor includes a lower substrate and an upper substrate. The upper substrate includes a micro oscillator, electrodes and a pad, which are independent of each other. The micro oscillator includes a curved surface portion, a joint portion recessed inward from an apex of the curved surface portion and joined to a support portion of the lower substrate, a rim at an end of the curved surface portion and a conductive film covering the micro oscillator. The curved surface portion is in an aerial state. The rim is made of the same material as the electrodes, located on a virtual flat plane formed by the electrodes, and apart from and surrounded by the electrodes. A portion of the conductive film that covers the joint portion is electrically bonded to a lower metal film covering the support portion.
    Type: Application
    Filed: April 27, 2022
    Publication date: November 24, 2022
    Inventors: YUUKI INAGAKI, YUSUKE KAWAI, TAKAHIKO YOSHIDA, SHOTA HARADA, KATSUAKI GOTO, KEITARO ITO
  • Publication number: 20220315411
    Abstract: A micro vibration body includes a curved surface portion, which has an annular curved surface, and a recessed portion, which is recessed from the curved surface portion. A mounting substrate includes an inner frame portion and electrode portions, which surround an inner frame portion. A joining member is provided in an inner region of the mounting substrate surrounded by the inner frame portion. The recessed portion of the micro vibration body has a bottom surface defining a mounted surface located in the inner region and joined to the mounting substrate via the joining member. The curved surface portion has a rim that includes an end portion of the curved surface portion on an opposite side to the recessed portion. The rim has a rim lower surface located on a same plane as the mounted surface or a tip end portion of the mounted surface.
    Type: Application
    Filed: March 24, 2022
    Publication date: October 6, 2022
    Inventors: Keitaro ITO, Shota HARADA, Katsuaki GOTO, Yuuki INAGAKI, Teruhisa AKASHI, Hirofumi FUNABASHI, Takahiko YOSHIDA, Yusuke KAWAI
  • Publication number: 20220316880
    Abstract: A micro vibration body includes a curved surface portion, a recessed portion recessed from the curved surface portion, a bottom surface protruding portion protruding from a bottom surface of the recessed portion, and a through hole in the bottom surface protruding portion. A mounting substrate has a positioning recess, into which the bottom surface protruding portion is inserted, and electrode portions surrounding the inner frame portion. A joining member is in the positioning recess and joins the bottom surface protruding portion with the mounting substrate. The bottom surface is in contact with a region of the mounting substrate around the positioning recess. The bottom surface protruding portion has a tip end surface that is at a distance from the positioning recess. The joining member at least partially enters the through hole and is electrically connected to the conductive layer.
    Type: Application
    Filed: March 24, 2022
    Publication date: October 6, 2022
    Inventors: Shota HARADA, Keitaro ITO, Katsuaki GOTO, Yuuki INAGAKI, Takahiko YOSHIDA, Yusuke KAWAI, Teruhisa AKASHI, Hirofumi FUNABASHI
  • Patent number: 11456626
    Abstract: A power transfer device includes a power transfer coil that transfers power to another device in a non-contact manner, a power transmission and reception circuit that supplies power to the power transfer coil or outputs power received by the power transfer coil to a load circuit, and a protection coil disposed between the power transfer coil and the power transmission and reception circuit to prevent a magnetic flux generated by the power transfer coil from reaching the power transmission and reception circuit. The protection coil includes an air-core coil formed of a wiring pattern of a conductor provided on a board disposed between the power transfer coil and the power transmission and reception circuit, and at least one core coil connected in series to the air-core coil.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: September 27, 2022
    Assignee: OMRON CORPORATION
    Inventors: Kenichi Tabata, Goro Nakao, Yusuke Kawai, Atsushi Nomura, Masanobu Nakajo, Takahiro Takeyama
  • Patent number: 11456624
    Abstract: A power reception device of a non-contact power feeding device has: a resonant circuit having a reception coil configured to receive electric power from a power transmission device and a resonant capacitor connected in series with the reception coil; a first rectifier circuit configured to rectify electric power received via the resonant circuit; a smoothing capacitor connected to the first rectifier circuit and configured to smooth a voltage outputted from the first rectifier circuit; a sub-coil arranged to be capable of being electromagnetically coupled to the reception coil; and a second rectifier circuit connected between the sub-coil and the smoothing capacitor, and configured to output electric power according to a voltage generated in the sub-coil to the smoothing capacitor in response to a voltage obtained by rectifying a voltage generated in the sub-coil being higher than a voltage between both terminals of the smoothing capacitor.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: September 27, 2022
    Assignee: OMRON OORPORATION
    Inventors: Goro Nakao, Kenichi Tabata, Yusuke Kawai, Atsushi Nomura, Takahiro Takeyama, Masanobu Nakajo
  • Patent number: 11448156
    Abstract: An engine control apparatus includes an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of a expansion stroke to initiate the SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes the injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Energy of the preceding ignition is set to be lower when an in-cylinder temperature specified by an in-cylinder temperature specification section is high than when the in-cylinder temperature is low.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: September 20, 2022
    Assignee: Mazda Motor Corporation
    Inventors: Kota Matsumoto, Tomonori Urushihara, Keiji Maruyama, Masanari Sueoka, Ryohei Ono, Yuji Harada, Toru Miyamoto, Atsushi Inoue, Tatsuhiro Tokunaga, Takuya Ohura, Yusuke Kawai, Tomohiro Nishida, Keita Arai, Yodai Yamaguchi