Patents by Inventor Takeshi Okamoto

Takeshi Okamoto 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: 20250149528
    Abstract: The present disclosure relates to a semiconductor device including: a first main terminal that is provided with a first potential; a second main terminal that is provided with a second potential lower than the first potential; a control terminal that is connected to an overcurrent detection circuit provided externally; at least one semiconductor element that includes a MOS transistor connected between the first main terminal and the second main terminal; and at least one diode that has a cathode electrically connected to the first main terminal and an anode electrically connected to the control terminal and protects the overcurrent detection circuit, wherein the at least one semiconductor element is mounted on a conductor plate, and the at least one semiconductor element and the at least one diode are sealed with an insulating resin.
    Type: Application
    Filed: March 29, 2022
    Publication date: May 8, 2025
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kazuhiro NISHIMURA, Koichi TAGUCHI, Takeshi OMARU, Korehide OKAMOTO, Yukimasa HIGASHI
  • Publication number: 20250147521
    Abstract: A control system is configured to control movement of a mobile object that is configured to be conveyed by unmanned driving at least in a manufacturing process, and the control system includes: a stop position identification section configured to identify a stop position at which the mobile object is stopped on a conveying part of a conveyance apparatus including the conveying part configured to convey the mobile object; and a control command section configured to generate and output a control command to cause the mobile object to enter the conveying part according to the stop position.
    Type: Application
    Filed: August 13, 2024
    Publication date: May 8, 2025
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kento IWAHORI, Noritsugu IWAZAKI, Go INOUE, Takeshi KANOU, Yuki OKAMOTO, Jyunya KATOU
  • Patent number: 12292020
    Abstract: A supply system for supplying ozone to an engine includes an electrolysis part that electrolyzes water to generate hydrogen and oxygen, a first supply part that supplies hydrogen generated by the electrolysis part to an intake pipe of the engine, an ozone generation part that generates ozone from oxygen generated by the electrolysis part, and a second supply part that supplies ozone generated by the ozone generation part to the intake pipe.
    Type: Grant
    Filed: March 6, 2024
    Date of Patent: May 6, 2025
    Assignee: ISUZU MOTORS LIMITED
    Inventor: Takeshi Okamoto
  • Publication number: 20250141365
    Abstract: In a control device, a phase corrector corrects an error in a phase of an AC power supply detected by a phase detector. A current coordinate transformer transforms detected values of three-phase currents of a converter into dq-axes currents using the corrected phase. A current controller calculates a voltage command so that current commands of the converter and the dq-axes currents match each other. A voltage coordinate transformer transforms the voltage command into three-phase voltage commands using the corrected phase. An estimator estimates an inductance of a reactor using the voltage commands and the dq-axes currents. The phase corrector corrects a phase detection error using the voltage commands, the dq-axes currents, and an impedance of the reactor. The current controller updates a current control gain using the inductance estimated by the estimator.
    Type: Application
    Filed: March 3, 2022
    Publication date: May 1, 2025
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takeshi OKAMOTO, Hiroyuki ENOKIJIMA, Yasushi OTSUKA
  • Publication number: 20250128777
    Abstract: A device includes: a determination unit configured to determine whether a vehicle is on a conveyor, the vehicle being configured to travel by unmanned driving; a conveyance velocity acquisition unit configured to acquire a conveyance velocity of the conveyor; and a decision unit configured to decide a target vehicle velocity of the vehicle based on the acquired conveyance velocity, when the determination unit determines that the vehicle is on the conveyor.
    Type: Application
    Filed: August 28, 2024
    Publication date: April 24, 2025
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noritsugu Iwazaki, Takeshi Kanou, Go Inoue, Yuki Okamoto, Kento Iwahori, Jyunya Katou, Amane Yajima
  • Publication number: 20250130711
    Abstract: A terminal receives a slide operation of an image displayed on a display from a first position to a second position and when a finger is held in the second position without being released from the display for a certain period of time, receives an operation for a specific process.
    Type: Application
    Filed: October 21, 2024
    Publication date: April 24, 2025
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takeshi TAKAHASHI, Naoko OKAMOTO
  • Publication number: 20250130577
    Abstract: A device includes: a vehicle velocity acquisition unit configured to acquire a vehicle velocity of a vehicle capable of traveling by unmanned driving; a conveyance velocity acquisition unit configured to acquire a conveyance velocity of a conveyor which the vehicle is on; and an estimation unit configured to estimate a position of the vehicle using the acquired vehicle velocity and the acquired conveyance velocity.
    Type: Application
    Filed: October 4, 2024
    Publication date: April 24, 2025
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noritsugu IWAZAKI, Takeshi Kanou, Yuki Okamoto, Go Inoue
  • Patent number: 12281410
    Abstract: A method and an apparatus for manufacturing a silicon carbide single crystal, and a silicon carbide single crystal ingot, obtaining a silicon carbide single crystal reduced in defects such as threading dislocations, are provided. The method manufactures a silicon carbide single crystal by supplying a raw material gas into a reaction vessel with a seed substrate, and heats the interior to grow a silicon carbide single crystal on the surface of the seed substrate. The method includes growing the silicon carbide single crystal on the seed substrate surface, while controlling the temperature, to perform pair annihilation of threading dislocations or synthesis of the threading dislocations; and a second step of maintaining the temperature inside the reaction vessel in the state of the first predetermined temperature after execution of the first step, to bring the leading ends of the threading dislocations close to the surface of the seed substrate.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: April 22, 2025
    Assignees: CENTRAL RESEARCH INSTITUTE OF ELECTRIC POWER INDUSTRY, DENSO CORPORATION
    Inventors: Norihiro Hoshino, Isaho Kamata, Hidekazu Tsuchida, Takahiro Kanda, Takeshi Okamoto
  • Patent number: 12258897
    Abstract: A purification system for purifying exhaust gas from an engine includes a separation part that separates oxygen and nitrogen contained in air, an ozone generation part that generates ozone from oxygen separated by the separation part, and a supply part that supplies ozone generated by the ozone generation part to an intake pipe and an exhaust pipe of the engine. The purification system includes a supply control device that adjusts an amount of ozone supplied to the intake pipe and an amount of ozone supplied to the exhaust pipe according to a purification rate of exhaust gas of the engine.
    Type: Grant
    Filed: March 6, 2024
    Date of Patent: March 25, 2025
    Assignee: ISUZU MOTORS LIMITED
    Inventor: Takeshi Okamoto
  • Publication number: 20250093881
    Abstract: A control device for a vehicle includes an external force information acquisition unit configured to acquire external force information on external force acting on a vehicle that is an autonomous vehicle, an external force determination unit configured to determine a kind of the external force by using the external force information, and a traveling control signal generation unit configured to generate a traveling control signal for the vehicle in accordance with the kind of the external force.
    Type: Application
    Filed: July 1, 2024
    Publication date: March 20, 2025
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shogo YASUYAMA, Kento Iwahori, Takuro Sawano, Daiki Yokoyama, Yasuhiro Saito, Go Inoue, Yuki Okamoto, Kento Ohara, Takeshi Kanou, Noritsugu Iwazaki, Yuki Hayakawa, Toshifumi Yamakawa
  • Patent number: 12252808
    Abstract: In a silicon carbide single crystal wafer, a dislocation density contained therein is 3500 dislocations/cm2 or less, and a difference of the dislocation density among a wafer central part, a wafer peripheral part and a wafer intermediate part is less than 50% of an average value thereof.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: March 18, 2025
    Assignee: DENSO CORPORATION
    Inventors: Isaho Kamata, Hidekazu Tsuchida, Norihiro Hoshino, Yuichiro Tokuda, Takeshi Okamoto
  • Patent number: 12243790
    Abstract: Provided are a semiconductor device and an inverter device with a decrease in yield being suppressed by preventing the adhesive from leaking into the inside of the semiconductor device. A heat sink, a wiring board provided on the heat sink, a semiconductor chip provided on the wiring board, a case housing provided on the heat sink so as to surround the wiring board and the semiconductor chip, an adhesive that adheres a lower surface joint portion of the case housing and an upper surface joint portion of the heat sink, a sealing material that fills the case housing and covers the wiring board and the semiconductor chip, and a convex portion provided on the lower surface joint portion of the case housing or the upper surface joint portion of the heat sink, that separates the adhesive from the sealing material are included.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: March 4, 2025
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yosuke Miyagi, Hideki Tsukamoto, Takuro Mori, Masaru Furukawa, Korehide Okamoto, Takamasa Oda, Seiji Saiki, Takeshi Ogawa
  • Publication number: 20250027232
    Abstract: A colored fiber excellent in heat generation suppression property and fastness is provided. A method for manufacturing a colored fiber, and a fiber product is also provided. The colored fiber includes a fiber and a compound expressed by Formula (1) below.
    Type: Application
    Filed: September 20, 2024
    Publication date: January 23, 2025
    Applicant: KANEKA CORPORATION
    Inventors: Masatoshi Mizumura, Akihiro Okamoto, Takeshi Tanaka
  • Publication number: 20240421049
    Abstract: The semiconductor device includes a semiconductor chip that has a first principal surface, a withstand-voltage holding structure in a peripheral region in the first principal surface, a plurality of first conductive layers that are formed in the first principal surface, a second conductive layer overlaps with a space between the plurality of mutually adjacent first conductive layers in a plan view, and a protective layer that covers the plurality of first conductive layers and the second conductive layer.
    Type: Application
    Filed: August 30, 2024
    Publication date: December 19, 2024
    Applicant: ROHM CO., LTD.
    Inventor: Takeshi OKAMOTO
  • Patent number: 12139813
    Abstract: An object is to provide a SiC wafer in which a detection rate of an optical sensor can improved and a SiC wafer manufacturing method. The method includes: a satin finishing process S141 of satin-finishing at least a back surface 22 of a SiC wafer 20; an etching process 21 of etching at least the back surface 22 of the SiC wafer 20 by heating under Si vapor pressure after the satin finishing process S141; and a mirror surface processing process S31 of mirror-processing a main surface 21 of the SiC wafer 20 after the etching process S21. Accordingly, it is possible to obtain a SiC wafer having the mirror-finished main surface 21 and the satin-finished back surface 22.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: November 12, 2024
    Assignee: TOYOTA TSUSHO CORPORATION
    Inventors: Masatake Nagaya, Takahiro Kanda, Takeshi Okamoto, Satoshi Torimi, Satoru Nogami, Makoto Kitabatake
  • Publication number: 20240337044
    Abstract: A silicon carbide single crystal includes a region in which a change of a specific resistance is repeated in a growth direction of the silicon carbide single crystal, and the change of the specific resistance is a gradual increase and decrease of the specific resistance. A changing range of the specific resistance may be within a range from 0.5% to 50% inclusive. A changing period of the gradual increase and decrease of the specific resistance that is repeated may be 500 ?m or less in terms of a length of the silicon carbide single crystal.
    Type: Application
    Filed: February 7, 2024
    Publication date: October 10, 2024
    Inventors: NOBUYUKI OYA, TAKESHI OKAMOTO, AKIYOSHI HORIAI
  • Publication number: 20240309832
    Abstract: A supply system for supplying ozone to an engine includes an electrolysis part that electrolyzes water to generate hydrogen and oxygen, a first supply part that supplies hydrogen generated by the electrolysis part to an intake pipe of the engine, an ozone generation part that generates ozone from oxygen generated by the electrolysis part, and a second supply part that supplies ozone generated by the ozone generation part to the intake pipe.
    Type: Application
    Filed: March 6, 2024
    Publication date: September 19, 2024
    Inventor: Takeshi OKAMOTO
  • Publication number: 20240309790
    Abstract: A purification system for purifying exhaust gas from an engine includes a separation part that separates oxygen and nitrogen contained in air, an ozone generation part that generates ozone from oxygen separated by the separation part, and a supply part that supplies ozone generated by the ozone generation part to an intake pipe and an exhaust pipe of the engine. The purification system includes a supply control device that adjusts an amount of ozone supplied to the intake pipe and an amount of ozone supplied to the exhaust pipe according to a purification rate of exhaust gas of the engine.
    Type: Application
    Filed: March 6, 2024
    Publication date: September 19, 2024
    Inventor: Takeshi OKAMOTO
  • Patent number: 12071709
    Abstract: A raw material gas is supplied to a space in which a silicon carbide seed crystal is placed. A silicon carbide single crystal is grown on the seed crystal by keeping a monosilane partial pressure at 4 kPa or more and heating the space to a temperature of 2400° C. to 2700° C. The temperature of the space and supply of the raw material gas are controlled such that a temperature gradient of a growth crystal surface of the silicon carbide single crystal in a radial direction is 0.1° C./mm or less, and a radius of curvature of the growth crystal surface is 4.5 m or more, thereby producing a silicon carbide single crystal ingot having a growth length of 3 mm or more and an internal stress of 10 MPa or less. The ingot is then cut into a silicon carbide single crystal wafer.
    Type: Grant
    Filed: July 31, 2023
    Date of Patent: August 27, 2024
    Assignee: DENSO CORPORATION
    Inventors: Isaho Kamata, Hidekazu Tsuchida, Norihiro Hoshino, Yuichiro Tokuda, Takeshi Okamoto
  • Patent number: 12063747
    Abstract: A surface-treated copper foil includes, on at least one surface of an untreated copper foil, a finely roughened layer formed of copper particles in which primary particles have a particle size of 10 nm to 110 nm or less, and a heat-resistant-treatment layer containing nickel and phosphorus, wherein a treated surface has a surface area ratio of 5.1 or more per 1 m2 of a two-dimensional area, the surface area ratio being calculated from a specific surface area measured by a krypton gas adsorption BET method, and a coating mass of the nickel is 2 mg or more per 1 m2 of a surface area.
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: August 13, 2024
    Assignee: FUKUDA METAL FOIL & POWDER CO., LTD.
    Inventors: Takeshi Okamoto, Kenta Miyamoto