Patents by Inventor Keisuke NAKAGAWA

Keisuke NAKAGAWA 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: 11040334
    Abstract: Provided is a catalyst for reduction reaction with which 1,4-butanediol or tetrahydrofuran can be obtained with higher selectivity than with the related art, using a raw material derived from biomass. The catalyst is used in a reduction reaction of 3,4-dihydroxytetrahydrofuran with hydrogen, wherein the catalyst contains metal catalysts (1) and (2) below; metal catalyst (1): a catalyst containing M1 and M2 below as metal species and supported on a carrier; and metal catalyst (2): a catalyst containing M1 below as a metal species and supported on a carrier; M1: one or more selected from the group consisting of iron and elements belonging to periods 4 to 6 and groups 5 to 7 of the periodic table; and M2: one or more selected from the group consisting of ruthenium, osmium, and elements belonging to periods 4 to 6 and groups 9 to 11 of the periodic table.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: June 22, 2021
    Assignee: DAICEL CORPORATION
    Inventors: Keiichi Tomishige, Yoshinao Nakagawa, Masazumi Tamura, Yuuichirou Hirai, Yasuteru Kajikawa, Keisuke Ono
  • Publication number: 20210172385
    Abstract: A gas turbine fuel supply system includes a fuel supply flow passage that includes a fuel gas heater which heats fuel and supplies the fuel heated by the fuel gas heater to a first nozzle and a second nozzle, a bypass flow passage that supplies the fuel to the first nozzle without passing through the fuel supply flow passage, and a bypass fuel flow rate adjusting valve that adjusts a flow rate of the fuel flowing in the bypass flow passage.
    Type: Application
    Filed: November 27, 2018
    Publication date: June 10, 2021
    Inventors: Makoto KISHI, Keisuke YAMAMOTO, Hiroyuki NAKAGAWA, Hisashi NAKAHARA, Shinya UCHIDA, Ryo KOTO
  • Patent number: 11005325
    Abstract: Provided is a stator of a rotating electric machine including: a stator core; windings of multiple phases wound around the stator core via insulators attached to the stator core; and tab terminals that each have at least one slit and a plate-shaped tab and that electrically connect an end portion of a winding, of one of the multiple phases, of the windings to an end portion of an other of the windings of a different one of the multiple phases, wherein a portion of each of the insulators or a resin component different from the insulators has a connection terminal insertion hole into which the tab terminal is inserted, and the connection terminal insertion hole is formed on a circle centered on a shaft center of the stator, and a plate surface of the tab of the tab terminal to be inserted into the connection terminal insertion hole is placed to be tangential to the circle.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: May 11, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuki Tamura, Kazuhiro Shono, Yusuke Nakagawa, Ryohei Uno, Keisuke Kato
  • Patent number: 10997422
    Abstract: An information processing apparatus (10) includes a time and space information acquisition unit (110) that acquires high-risk time and space information indicating a spatial region with an increased possibility of an accident occurring or of a crime being committed and a corresponding time slot, a possible surveillance target acquisition unit (120) that identifies a video to be analyzed from among a plurality of videos generated by capturing an image of each of a plurality of places, on the basis of the high-risk time and space information, and analyzes the identified video to acquire information of a possible surveillance target, and a target time and space identification unit (130) that identifies at least one of a spatial region where surveillance is to be conducted which is at least a portion of the spatial region or a time slot when surveillance is to be conducted, from among the spatial region and the time slot indicated by the high-risk time and space information, on the basis of the information of the
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: May 4, 2021
    Assignee: NEC CORPORATION
    Inventors: Junko Nakagawa, Ryoma Oami, Kenichiro Ida, Mika Saito, Shohzoh Nagahama, Akinari Furukawa, Yasumasa Ohtsuka, Junichi Fukuda, Fumi Ikeda, Manabu Moriyama, Fumie Einaga, Tatsunori Yamagami, Keisuke Hirayama, Yoshitsugu Kumano, Hiroki Adachi
  • Publication number: 20210018038
    Abstract: A ball joint and a dust cover in which a stable sealing function can be provided even when a space for disposing the dust cover is small are provided. The dust cover includes a deformable body portion, a fixed portion which is provided on one end side of the body portion and is fixed to a socket, and a seal portion provided on the other end side of the body portion. The seal portion has a main seal part which is provided to be slidable relative to a spherical portion side flange and an opposite side flange while sandwiched therebetween. The maximum length of the main seal part in a central axis direction in a state in which no external force is applied thereto is longer than a distance between opposing surfaces of the spherical portion side flange and the opposite side flange, where the central axis direction is a direction in which a central axis of the dust cover extends in a state in which no external force is applied thereto.
    Type: Application
    Filed: September 30, 2019
    Publication date: January 21, 2021
    Applicant: NOK Corporation
    Inventor: Keisuke NAKAGAWA
  • Publication number: 20200363369
    Abstract: Provided are a gas sensor element which is not prone to decreased precision of gas detection due to a decrease in temperature of a gas to be measured, and a gas sensor. An aspect of the present invention is a gas sensor element for detecting a specific gas included in a gas to be measured, the gas sensor element being provided with a solid electrolyte, a reference electrode, a measurement electrode, and a gas restricting layer. The thickness dimension WA of a portion of the gas restricting layer that is in contact with the measurement electrode, the thickness dimension WB of a portion of the gas restricting layer that is in contact with the solid electrolyte, and the thickness dimension WC of the measurement electrode satisfy the conditions WB>WA and WB?WA>WC. In a gas sensor element provided with such a gas restricting layer, the heat capacity of the gas restricting layer can be increased without hindering the gas to be measured from reaching the measurement electrode.
    Type: Application
    Filed: September 12, 2018
    Publication date: November 19, 2020
    Inventors: Mika TANGE, Keisuke NAKAGAWA, Takashi NAKAO, Shigehiro OHTSUKA
  • Publication number: 20190285339
    Abstract: A raw material gas liquefying device includes a feed line; a refrigerant circulation line; and a controller. In a refrigerant liquefaction route, a refrigerant flows through a compressor, a heat exchanger, a circulation system JT valve, a liquefied refrigerant storage tank, and the heat exchanger, and returns to the compressor. In a cryogenic energy generation route, the refrigerant flows through the compressor, the heat exchanger, an expansion unit, and the heat exchanger, and returns to the compressor. The controller determines if a refrigerant storage tank liquid level is within an allowable range, manipulates a feed system JT valve opening rate to control refrigerant temperature at the high-temperature-side refrigerant flow path exit side of the heat exchanger, and manipulates the opening rate of the feed system JT valve to control the refrigerant storage tank liquid level so that the refrigerant storage tank liquid level falls into the predetermined allowable range.
    Type: Application
    Filed: December 4, 2017
    Publication date: September 19, 2019
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Tomohiro SAKAMOTO, Hidetaka MIYAZAKI, Naotaka YAMAZOE, Daisuke KARIYA, Yasuo MIWA, Yuichi SAITOU, Yosuke KIMURA, Toshihiro KOMIYA, Yoshihiro MATSUDA, Keisuke NAKAGAWA
  • Patent number: 10406632
    Abstract: A laser machining device having a surface plate upon which a material to be machined is placed, a rail, a saddle, a garter, a horizontal carriage, and a laser nozzle. On it is attached: a machining trolley that causes the saddle to travel along rail, causes the horizontal carriage to travel horizontally along garter, irradiates laser light from laser nozzle towards a material to be machined, and cuts or welds the material. A cover is provided that covers substantially the entire surface of machining trolley and has an upper surface cover, a laser nozzle-side cover, a garter-side cover, and a side surface body. On a lower end side of the laser nozzle-side cover and the garter-side cover, there is a flexible light-blocking member for preventing laser light from leaking from a gap between the lower end section and the upper surface of the surface plate.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: September 10, 2019
    Assignee: Koike Sanso Kogyo Co., Ltd.
    Inventors: Yoichi Maruyama, Satoshi Masuda, Keisuke Nakagawa, Takumi Omori
  • Patent number: 10352893
    Abstract: A gas sensor control apparatus including a gas sensor element, a heater for heating the gas sensor element, and heater energization control means for feedback controlling the supply of electric current to the heater such that the internal resistance of the gas sensor element coincides with a target resistance. The gas sensor element has a solid electrolyte member and an electrode portion including an outside electrode and an inside electrode. At least a portion of the electrode portion is formed of an electrically conductive oxide whose main component is (i) a first perovskite phase which is represented by a composition formula of LaCo1?xNixO3±d (0.300?x?0.600, 0?d?0.4) and has a perovskite-type crystal structure, or (ii) a second perovskite phase which is represented by a composition formula of LaFe1?yNiyO3±d (0.450?y?0.700, 0?d?0.4) and has a perovskite-type crystal structure.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: July 16, 2019
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Keisuke Nakagawa, Shigehiro Ohtsuka, Hisashi Kozuka, Kazuma Ito, Ippei Kato
  • Patent number: 10012612
    Abstract: An inside lead portion of a gas sensor element has a lanthanum zirconate layer arranged between an electrically conductive oxide layer and a solid electrolyte member. Meanwhile, an inside detection electrode portion of the gas sensor element is formed such that (i) no lanthanum zirconate layer is formed between an electrically conductive oxide layer and the solid electrolyte member, or (ii) a lanthanum zirconate layer thinner than the lanthanum zirconate layer of the inside lead portion is formed between the electrically conductive oxide layer and the solid electrolyte member.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: July 3, 2018
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Shigehiro Ohtsuka, Tomohiro Nishi, Keisuke Nakagawa, Kazuma Ito, Ippei Kato
  • Publication number: 20170165788
    Abstract: A laser machining device having a surface plate upon which a material to be machined is placed, a rail, a saddle, a garter, a horizontal carriage, and a laser nozzle. On it is attached: a machining trolley that causes the saddle to travel along rail, causes the horizontal carriage to travel horizontally along garter, irradiates laser light from laser nozzle towards a material to be machined, and cuts or welds the material. A cover is provided that covers substantially the entire surface of machining trolley and has an upper surface cover, a laser nozzle-side cover, a garter-side cover, and a side surface body. On a lower end side of the laser nozzle-side cover and the garter-side cover, there is a flexible light-blocking member for preventing laser light from leaking from a gap between the lower end section and the upper surface of the surface plate.
    Type: Application
    Filed: April 21, 2015
    Publication date: June 15, 2017
    Inventors: Yoichi MARUYAMA, Satoshi MASUDA, Keisuke NAKAGAWA, Takumi OMORI
  • Publication number: 20170059511
    Abstract: A gas sensor control apparatus including a gas sensor element, a heater for heating the gas sensor element, and heater energization control means for feedback controlling the supply of electric current to the heater such that the internal resistance of the gas sensor element coincides with a target resistance. The gas sensor element has a solid electrolyte member and an electrode portion including an outside electrode and an inside electrode. At least a portion of the electrode portion is formed of an electrically conductive oxide whose main component is (i) a first perovskite phase which is represented by a composition formula of LaCo1-xNixO3±d (0.300?x?0.600, 0?d?0.4) and has a perovskite-type crystal structure, or (ii) a second perovskite phase which is represented by a composition formula of LaFe1-yNiyO3±d (0.450?y?0.700, 0?d?0.4) and has a perovskite-type crystal structure.
    Type: Application
    Filed: August 29, 2016
    Publication date: March 2, 2017
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Keisuke NAKAGAWA, Shigehiro OHTSUKA, Hisashi KOZUKA, Kazuma ITO, Ippei KATO
  • Publication number: 20170016849
    Abstract: An inside lead portion of a gas sensor element has a lanthanum zirconate layer arranged between an electrically conductive oxide layer and a solid electrolyte member. Meanwhile, an inside detection electrode portion of the gas sensor element is formed such that (i) no lanthanum zirconate layer is formed between an electrically conductive oxide layer and the solid electrolyte member, or (ii) a lanthanum zirconate layer thinner than the lanthanum zirconate layer of the inside lead portion is formed between the electrically conductive oxide layer and the solid electrolyte member.
    Type: Application
    Filed: July 12, 2016
    Publication date: January 19, 2017
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Shigehiro OHTSUKA, Tomohiro NISHI, Keisuke NAKAGAWA, Kazuma ITO, Ippei KATO