Patents by Inventor Kotaro Watanabe

Kotaro Watanabe 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).

  • Patent number: 12372197
    Abstract: There is provided a mounting tool for an elevator rope tension measurement device, the mounting tool being capable of preventing the rope tension measurement device from interfering with a rope disposed adjacently to a rope that is a measurement target. A mounting tool for an elevator rope tension measurement device includes: a first holding body configured to hold a rope of an elevator; a second holding body configured to hold a rope tension measurement device that measures a tension of the rope; and a connecting body configured to connect the first holding body with the second holding body so as to dispose the rope tension measurement device at a position away from the rope.
    Type: Grant
    Filed: July 3, 2020
    Date of Patent: July 29, 2025
    Assignees: MITSUBISHI ELECTRIC BUILDING SOLUTIONS CORPORATION, MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kotaro Watanabe, Tetsuro Seki, Sunao Fujiwara, Yoshiko Ono, Tetsushi Morikawa, Takuya Hashiguchi, Hiroshi Fukunaga, Yasuyuki Koide
  • Patent number: 11780026
    Abstract: The welding operation monitoring system includes an image capturing device that is disposed on a side opposite to a side to which the plasma flow is supplied out of a pipe inside and a pipe outside of the strip-shaped steel sheet formed in a tubular shape, and is configured to capture a color image including a plasma flow over the V-shaped region; and a welding operation monitoring device that is configured to generate a specific color component image obtained by extracting a specific color component from the color image, and specifies a V-shaped display region, which is a region corresponding to the V-shaped region within the color image, on the basis of the V-shaped region shown in the specific color component image, thereby analyzing a state of the welding operation.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: October 10, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Atsushi Sugihashi, Kotaro Watanabe, Yoshihiro Hashimoto
  • Patent number: 11592045
    Abstract: A lap fillet arc welded joint includes: a first steel sheet and a second steel sheet which are overlapped each other, the first steel sheet and the second steel sheet each having a tensile strength of 950 MPa or more; and a weld metal which extends along a corner formed by an upper surface of the first steel sheet and an end surface of the second steel sheet. When: a toe angle of the weld metal is defined as ?; the total number of concave portions present on the surface of the weld metal included a range of 0.4 mm or less from a fusion boundary is defined as NA; and the number of concave portions in contact with ferrite grains having a maximum grain size of 10 ?m or more is defined as NB, the weld metal satisfies the following conditional expressions (1) and (2) at the same time. 0°<?<30°??(1) NB/NA?0.70??(2) (Here, NA is 20 or more).
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: February 28, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Kazuki Matsuda, Shinji Kodama, Kotaro Watanabe, Masatoshi Tokunaga
  • Patent number: 11400539
    Abstract: A flux-cored wire according to an aspect of the present invention includes: a steel sheath; and a flux filling the inside of the steel sheath, in which the flux contains 0.11% or more in total of a fluoride in terms of F-equivalent value, 4.30% to 7.50% of a Ti oxide in terms of TiO2 equivalent, 0.30% to 2.40% in total of an oxide in terms of mass %, and 0% to 0.60% in total of a carbonate in terms of mass %, the amount of a Ca oxide in terms of CaO is less than 0.20% in terms of mass %, the amount of CaF2 is less than 0.50%, a chemical composition of the flux-cored wire is within a predetermined range, a Z value is 2.00% or less, a V value is 5.0 to 27.0, and Ceq is 0.30% to 1.00% or less.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: August 2, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hiroki Fujimoto, Kotaro Watanabe, Yasuhito Totsuka
  • Patent number: 11373923
    Abstract: A heat sink including a metal-formed body having a base board part and two or more fin parts standing on a surface of the base board part and arranged in a parallel manner to each other, and one or more filled bodies consisting of a plurality of coiled metal-wire materials filled in one or more groove parts formed between the fin parts of the metal-formed body; the heat sink in which the coiled metal-wire materials have a first outer diameter at one end part and a second outer diameter at the other end part which is different from the first outer diameter; and the coiled metal-wire materials are metallurgically joined at partially to at least one of an inner surface of the groove parts of the metal-formed body and the other coiled metal-wire materials.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: June 28, 2022
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Kotaro Watanabe, Toshihiko Saiwai
  • Patent number: 11331742
    Abstract: According to an aspect of the present invention, there is provided a flux-cored wire including a steel sheath and a flux that fills the steel sheath. The flux contains fluorides of which a total value ? of F-equivalent values is 0.21% or more, oxides of which the total value ? of amounts ranges from 0.30% to less than 3.50%, and carbonates of which a total value of amounts ranges from 0% to 3.50%. An amount of CaO ranges from 0% to less than 0.20%. An amount of iron powder ranges from 0% to less than 10.0%. A X-value is 5.0% or less. The amount of CaF2 is less than 0.50%. The amount of Ti oxides ranges from 0.10% to less than 2.50%. A ratio of ? to ? ranges from 0.10 to 4.00. A total value of amounts of MgCO3, Na2CO3, and LiCO3 ranges from 0% to 3.00%. Other chemical composition is within a predetermined range. Ceq ranges from 0.45% to 1.20%.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: May 17, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Kotaro Watanabe, Tatsuya Kumagai, Hiroki Fujimoto, Yasuhito Totsuka
  • Publication number: 20210090971
    Abstract: A heat sink including a metal-formed body having a base board part and two or more fin parts standing on a surface of the base board part and arranged in a parallel manner to each other, and one or more filled bodies consisting of a plurality of coiled metal-wire materials filled in one or more groove parts formed between the fin parts of the metal-formed body; the heat sink in which the coiled metal-wire materials have a first outer diameter at one end part and a second outer diameter at the other end part which is different from the first outer diameter; and the coiled metal-wire materials are metallurgically joined at partially to at least one of an inner surface of the groove parts of the metal-formed body and the other coiled metal-wire materials.
    Type: Application
    Filed: January 9, 2019
    Publication date: March 25, 2021
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Kotaro Watanabe, Toshihiko Saiwai
  • Patent number: 10946486
    Abstract: According to an aspect of the present invention, there is provided a flux-cored wire including a steel sheath and a flux that fills the steel sheath. The flux contains fluorides of which a total value ? of F-equivalent values is 0.21% or more, oxides of which the total value ? of amounts ranges from 0.30% to 3.50%, and carbonates of which a total value of amounts ranges from 0% to 3.50%. An amount of CaO ranges from 0% to 0.20%. An amount of iron powder ranges from 0% to less than 10.0%. A Y-value is 5.0% or less. The amount of CaF2 is less than 0.50%. The amount of Ti oxides ranges from 0.10% to 2.50%. A ratio of ? to ? ranges from 0.10 to 4.00. A total value of amounts of MgCO3, Na2CO3, and LiCO3 ranges from 0% to 3.00%. A chemical composition excluding the fluorides, the oxides, the CaO, the carbonates, and the iron powder is within a predetermined range. Ceq ranges from 0.10% to 0.44%.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: March 16, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Kotaro Watanabe, Tatsuya Kumagai, Hiroki Fujimoto
  • Patent number: 10837326
    Abstract: An internal combustion engine valve timing control device includes a communication passage formed in a first rotating member to communicate with a working chamber, and including a first opening. The first opening is opened to a back pressure chamber when a tip portion of a lock member is inserted in a lock hole, and is closed by the lock member when the tip portion of the lock member is out of the lock hole. A first cross-sectional area is smaller than a second cross-sectional area, wherein the first cross-sectional area is a smaller one of a minimum cross-sectional area of the communication passage and an open cross-sectional area of the first opening, and the second cross-sectional area is a smaller one of a minimum cross-sectional area of an exhaust passage and an open cross-sectional area of an opening of the exhaust passage opened to the back pressure chamber.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: November 17, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Shohei Okada, Kotaro Watanabe, Kuninaga Hatsugai
  • Patent number: 10819335
    Abstract: A reference voltage circuit includes a first output terminal from which a first reference voltage is supplied; a first MOS transistor of a depletion type, the first MOS transistor containing a drain connected to a power supply terminal, a gate connected to a ground terminal, and a source; a first voltage drop circuit including a first end connected to the source of the first MOS transistor and a second end connected to the first output terminal; and a second MOS transistor of a depletion type, the second MOS transistor containing a drain connected to the first output terminal, a gate connected to the ground terminal, and a source connected to the ground terminal.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: October 27, 2020
    Assignee: ABLIC Inc.
    Inventors: Kotaro Watanabe, Sukhwinder Singh
  • Patent number: 10680514
    Abstract: A power supply circuit including an input terminal, an output terminal, a power output circuit, and a mode selection circuit. In the power supply circuit, the mode selection circuit is configured to supply a signal indicating whether the power output circuit is operated as a charge pump-type power output circuit or a series regulator-type power output circuit, and a voltage applied from the input terminal is stepped up or down by the power output circuit and then provided to the output terminal.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: June 9, 2020
    Assignee: ABLIC INC.
    Inventor: Kotaro Watanabe
  • Publication number: 20200149829
    Abstract: The purpose of the present invention is to improve the heat exchange performance of a heatsink. The heatsink includes: a substrate portion; a plurality of plate-like fin portions which rise integrally from a surface of the substrate portion and are arranged mutually in parallel, forming groove portions therebetween; and a porous body portion comprising at least one porous body with which the groove portions between the fin portions are filled and which has a three-dimensional mesh structure. The substrate portion and the fin portions comprise a solid non-porous material of aluminum. The porous body portion comprises a sintered body of aluminum fiber. The porous body portion is joined to the fin portions and the substrate portion via a sintered joint portion.
    Type: Application
    Filed: August 1, 2018
    Publication date: May 14, 2020
    Inventors: Kotaro Watanabe, Toshihiko Saiwai
  • Patent number: 10651831
    Abstract: An oscillation circuit small in circuit scale and in the influence of temperature on its oscillation frequency is provided. The oscillation circuit includes: a constant current circuit configured to supply a current based on a first depletion MOS transistor; a charge/discharge circuit having a first capacitor, a second capacitor, a second depletion MOS transistor, and a third depletion MOS transistor provided in a current path for charging the second capacitor, the first to third depletion MOS transistors having the same threshold voltage and the same temperature characteristics of the threshold voltage; and an RS latch circuit configured to output a waveform that falls by input of the reset signal and rises by input of the set signal.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: May 12, 2020
    Assignee: ABLIC INC.
    Inventor: Kotaro Watanabe
  • Publication number: 20200052584
    Abstract: A power supply circuit including an input terminal, an output terminal, a power output circuit, and a mode selection circuit. In the power supply circuit, the mode selection circuit is configured to supply a signal indicating whether the power output circuit is operated as a charge pump-type power output circuit or a series regulator-type power output circuit, and a voltage applied from the input terminal is stepped up or down by the power output circuit and then provided to the output terminal.
    Type: Application
    Filed: July 30, 2019
    Publication date: February 13, 2020
    Inventor: Kotaro Watanabe
  • Patent number: 10547216
    Abstract: A master station is a power feeding apparatus which transmits a power feeding signal that feeds power, to a slave station being a power receiving apparatus. The master station includes a wake-up time recording unit being a power-feeding-side storage unit, and a power-feeding-side determination unit. The power-feeding-side storage unit stores time information which specifies a start time at which data communication with the power receiving apparatus should be started. The power-feeding-side determination unit determines whether the start time specified by the time information is reached, and transmits the power feeding signal if it is determined that the start time is reached.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: January 28, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Kotaro Watanabe
  • Patent number: 10454376
    Abstract: Provided is a power supply circuit including a series regulator step-down power circuit, a charge pump step-up power circuit, and a voltage selection circuit to which a voltage of an input terminal and a voltage of an output terminal are supplied and configured to output a higher voltage from the supplied voltages. A connection point of a first resistor and a second resistor which are connected between the output terminal and a ground terminal is connected to an input of a differential amplifier circuit. An output of the differential amplifier circuit is connected to a gate terminal of an output transistor via a first switch. An output of the voltage selection circuit is connected to the gate terminal of the output transistor via a second switch. The output of the voltage selection circuit is connected to a substrate electrode of the output transistor.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: October 22, 2019
    Assignee: ABLIC INC.
    Inventor: Kotaro Watanabe
  • Patent number: 10337358
    Abstract: A valve timing control apparatus for an internal combustion engine includes: a drive rotation member; a housing; a vane rotor; and a front plate, the drive rotation member including a positioning mechanism including a guide portion which is formed on an inner circumference surface of the cylindrical wall, and which has an inclined shape whose an inside diameter is decreased from the one axial end side to the other axial end side, a mounting protrusion portion which is formed on the other end side of the guide portion, and on which an outer circumference surface of the housing is mounted to be positioned.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: July 2, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Kotaro Watanabe
  • Patent number: 10203664
    Abstract: An electronic timepiece includes a first switch connected to a signal line, a second switch, and a one-shot pulse signal generation circuit. The first switch is inserted into the signal line. One end of the second switch is connected to the signal line at a rear stage of the first switch, and the other end of the second switch is connected to a power source. The one-shot pulse signal generation circuit generates a one-shot pulse signal by using a reference clock signal, and the second switch is controlled by the one-shot pulse signal. The timepiece device can reduce currents flowing in a pull-down resistor or a pull-up resistor when a crown switch is turned on.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: February 12, 2019
    Assignee: SEIKO INSTRUMENTS INC.
    Inventors: Kazumi Sakumoto, Kotaro Watanabe, Minoru Sano
  • Patent number: D959483
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: August 2, 2022
    Inventors: Kotaro Watanabe, Seiichi Kumagai, Takaya Taniguchi, Takuya Hashiguchi, Kiyotaka Watanabe, Yoshiko Ono
  • Patent number: D967846
    Type: Grant
    Filed: February 11, 2022
    Date of Patent: October 25, 2022
    Assignees: MITSUBISHI ELECTRIC BUILDING SOLUTIONS CORPORATION, MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kotaro Watanabe, Seiichi Kumagai, Takaya Taniguchi, Takuya Hashiguchi, Kiyotaka Watanabe, Yoshiko Ono