Patents by Inventor Kazuya Yokota

Kazuya Yokota 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: 11936101
    Abstract: An antenna device includes a first antenna and a second antenna provided in a case. The first antenna includes a first capacitance loading element and is configured to at least one of receive and transmit a signal in a first frequency band. The second antenna includes a second capacitance loading element and is configured to at least one of receive and transmit a signal in a second frequency band. The second frequency band is higher than the first frequency band. The second capacitance loading element is disposed at a front side of the first capacitance loading element.
    Type: Grant
    Filed: February 15, 2023
    Date of Patent: March 19, 2024
    Assignee: YOKOWO CO., LTD.
    Inventors: Noritaka Terashita, Yusuke Yokota, Kazuya Fujimaki
  • Patent number: 11721479
    Abstract: A rare earth magnet including a magnetic phase having the composition represented by (Nd(1?x?y)LaxCey)2(Fe(1?z)Coz)14B. When the saturation magnetization at absolute zero and the Curie temperature calculated by Kuzmin's formula based on the measured values at finite temperature and the saturation magnetization at absolute zero and the Curie temperature calculated by first principles calculation are respectively subjected to data assimilation. The saturation magnetization M(x, y, z, T=0) at absolute zero and the Curie temperature obtained by machine learning using the assimilated data group are applied again to Kuzmin's formula and the saturation magnetization at finite temperature is represented by a function M(x, y, z, T), x, y, and z of the formula in an atomic ratio are in a range of satisfying M(x, y, z, T)>M(x, y, z=0, T) and 400?T?453.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: August 8, 2023
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, THE UNIVERSITY OF TOKYO
    Inventors: Kazuya Yokota, Tetsuya Syoji, Noritsugu Sakuma, Takashi Miyake, Yosuke Harashima, Hisazumi Akai, Naoki Kawashima, Keiichi Tamai, Munehisa Matsumoto
  • Patent number: 11656086
    Abstract: Vehicle speed data of a plurality of vehicles registered for each link of map information and respective average vehicle speeds calculated from the vehicle speed data are acquired, and the links are divided into vehicle speed groups according to the magnitude of the average vehicle speed. For each of the vehicle speed groups, the vehicle speed data of the plurality of vehicles is collectively subjected to frequency distribution analysis, and a predicted vehicle speed transition simulating a change in vehicle speed is calculated for each of the vehicle speed groups. An electricity consumption rate model of the vehicle is applied to the calculated predicted vehicle speed transition to predict an electricity consumption rate corresponding to the average vehicle speed for each of the vehicle speed groups.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: May 23, 2023
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuya Yokota, Kosuke Higashitani
  • Publication number: 20220291004
    Abstract: Vehicle speed data of a plurality of vehicles registered for each link of map information and respective average vehicle speeds calculated from the vehicle speed data are acquired, and the links are divided into vehicle speed groups according to the magnitude of the average vehicle speed. For each of the vehicle speed groups, the vehicle speed data of the plurality of vehicles is collectively subjected to frequency distribution analysis, and a predicted vehicle speed transition simulating a change in vehicle speed is calculated for each of the vehicle speed groups. An electricity consumption rate model of the vehicle is applied to the calculated predicted vehicle speed transition to predict an electricity consumption rate corresponding to the average vehicle speed for each of the vehicle speed groups.
    Type: Application
    Filed: February 22, 2022
    Publication date: September 15, 2022
    Inventors: Kazuya YOKOTA, Kosuke HIGASHITANI
  • Publication number: 20210107335
    Abstract: There is provided a passenger compartment structure that can save power while ensuring thermal comfort of an occupant. The passenger compartment structure allows control of thermal comfort of the occupant in a posture seated on a seat. The passenger compartment structure includes a layered structure constituting at least part of an interior member disposed at a position where the interior member is able to face a lower leg of the occupant. The layered structure disposed in each of a front middle portion, a front lower portion, a frontal lower portion, and a right surface front upper portion having a high geometric factor for the lower leg includes a surface layer, a structural parent layer, and a temperature control mechanism layer interposed between the surface layer and the structural parent layer.
    Type: Application
    Filed: February 26, 2019
    Publication date: April 15, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Kazuya YOKOTA, Hiroya OCHIAI, Toshihiko OHSUMI, Junji KANEISHI, Tomohiro YOSHIZUE, Toshihiro KASHIMA
  • Publication number: 20210065973
    Abstract: A rare earth magnet including a magnetic phase having the composition represented by (Nd(1?x?y)LaxCey)2(Fe(1?z)Coz)14B. When the saturation magnetization at absolute zero and the Curie temperature calculated by Kuzmin's formula based on the measured values at finite temperature and the saturation magnetization at absolute zero and the Curie temperature calculated by first principles calculation are respectively subjected to data assimilation. The saturation magnetization M(x, y, z, T=0) at absolute zero and the Curie temperature obtained by machine learning using the assimilated data group are applied again to Kuzmin's formula and the saturation magnetization at finite temperature is represented by a function M(x, y, z, T), x, y, and z of the formula in an atomic ratio are in a range of satisfying M(x, y, z, T)>M(x, y, z=0, T) and 400?T?453.
    Type: Application
    Filed: August 24, 2020
    Publication date: March 4, 2021
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, THE UNIVERSITY OF TOKYO
    Inventors: Kazuya YOKOTA, Tetsuya SYOJI, Noritsugu SAKUMA, Takashi MIYAKE, Yosuke HARASHIMA, Hisazumi AKAI, Naoki KAWASHIMA, Keiichi TAMAI, Munehisa MATSUMOTO
  • Publication number: 20200406708
    Abstract: A vehicle compartment temperature control device includes: a first interior member including a temperature control mechanism layer that can adjust the temperature of a leg of the occupant in a first region, that is, a front portion and the like. The vehicle compartment temperature control device also includes a second interior member disposed above the first interior member and including a temperature control mechanism layer in a second region, that is, a steering and the like that can adjust the temperature of a part above the leg and is different from the temperature control mechanism layer in the first region. The vehicle compartment temperature control device also includes an ECU. The ECU performs control such that the temperature of the temperature control mechanism layer in the first region is higher than the temperature of the temperature control mechanism layer in the second region.
    Type: Application
    Filed: February 26, 2019
    Publication date: December 31, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Kazuya YOKOTA, Hiroya OCHIAI, Toshihiko OHSUMI, Junji KANEISHI, Tomohiro YOSHIZUE, Toshihiro KASHIMA
  • Patent number: 9732648
    Abstract: An exhaust gas purification catalytic device 1 contains Pt, Pd, and Rh as catalytic metals. The catalytic metal Pt is loaded on silica-alumina which serves as a support, and Pt-loaded silica-alumina obtained by loading the Pt on the silica-alumina is contained in a catalytic layer with which an exhaust gas contacts first.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: August 15, 2017
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Hiroshi Yamada, Masahiko Shigetsu, Hisaya Kawabata, Yasuhiro Matsumura, Kazuya Yokota, Toshihiko Ohsumi, Takeo Yamauchi, Yusuke Koike
  • Patent number: 9446758
    Abstract: A hybrid vehicle (100) is a parallel hybrid vehicle including a motor/generator (5) arranged between an engine (1) and a transmission (62). The engine (1) is configured to perform lean operation in a low-load operating range. The hybrid vehicle is configured such that a rotation speed at a maximum point of power generation efficiency of the motor/generator (5) is within a rotation speed range (Xa) corresponding to a lower-speed part (a) of a 95% fuel-consumption efficiency operating range (A) of the engine (1).
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: September 20, 2016
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Toshihiko Ohsumi, Junji Kaneishi, Yasuhiko Kato, Mitsugu Mera, Masahiko Fujimoto, Hitoshi Fukuba, Kazuya Yokota
  • Publication number: 20160258330
    Abstract: An exhaust gas purification catalytic device 1 contains Pt, Pd, and Rh as catalytic metals. The catalytic metal Pt is loaded on silica-alumina which serves as a support, and Pt-loaded silica-alumina obtained by loading the Pt on the silica-alumina is contained in a catalytic layer with which an exhaust gas contacts first.
    Type: Application
    Filed: October 15, 2014
    Publication date: September 8, 2016
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Hiroshi YAMADA, Masahiko SHIGETSU, Hisaya KAWABATA, Yasuhiro MATSUMURA, Kazuya YOKOTA, Toshihiko OHSUMI, Takeo YAMAUCHI, Yusuke KOIKE
  • Publication number: 20140222275
    Abstract: A hybrid vehicle (100) is a parallel hybrid vehicle including a motor/generator (5) arranged between an engine (1) and a transmission (62). The engine (1) is configured to perform lean operation in a low-load operating range. The hybrid vehicle is configured such that a rotation speed at a maximum point of power generation efficiency of the motor/generator (5) is within a rotation speed range (Xa) corresponding to a lower-speed part (a) of a 95% fuel-consumption efficiency operating range (A) of the engine (1).
    Type: Application
    Filed: August 31, 2012
    Publication date: August 7, 2014
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Toshihiko Ohsumi, Junji Kaneish, Yasuhiko Kato, Mitsugu Mera, Masahiko Fujimoto, Hitoshi Fukuba, Kazuya Yokota
  • Patent number: 8311724
    Abstract: A valve overlap period is increased as a desired torque of an engine increases by advancing an opening timing of an intake valve at a rate greater than that of retarding a closing timing of an exhaust valve in a low engine-torque area in which the desired torque of the internal combustion engine is relatively low (step S16). The valve overlap period is increased as the desired torque of the engine increases by retarding the closing timing of the exhaust valve at a rate greater than that of advancing the opening timing of the intake valve in a high engine-torque area in which the desired torque of the internal combustion engine is relatively high (step S17). Accordingly, the drivability can be improved by obtaining the proper torque and the smooth torque curve in the wide driving area.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: November 13, 2012
    Assignee: Mazda Motor Corporation
    Inventors: Mikihito Fujii, Kazuya Yokota, Naoyuki Yamagata, Kazuaki Narahara
  • Patent number: 8053465
    Abstract: Summary Novel bicycloester derivatives and pharmaceutically acceptable salts thereof have high DPP-IV inhibitory activity. Solving Means The novel bicycloester derivatives are represented by the general formula (1): Pharmaceutically acceptable salts thereof are also included (Example: (2S,4S)-1-[[(N-(4-ethoxycarbonylbicyclo[2.2.2]oct-1-yl)amino]acetyl]-4-fluoropyrrolidine-2-carbonitrile)).
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: November 8, 2011
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Yasumichi Fukuda, Yoshikazu Asahina, Kohei Ohata, Kazuya Yokota, Koji Murakami, Toshiyuki Matsui
  • Patent number: 8036817
    Abstract: There is provided a method for starting a spark ignition engine having multiple cylinders. The method may comprise supplying air and fuel for restart into a first cylinder before said engine completely stops, and igniting the mixture of said air and said fuel in said first cylinder in response to an engine restart request, wherein said first cylinder is on an expansion stroke when said engine stops. The method may also include, after said piston in said first cylinder starts moving, injecting fuel into a second cylinder that is on a compression stroke when said engine stops, on a compression stroke where a piston of said second cylinder is moving in a direction opposite to an operative direction of said piston in said first cylinder.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: October 11, 2011
    Assignee: Mazda Motor Corporation
    Inventors: Noriyuki Ota, Masahiko Fujimoto, Yasushi Murakami, Keiji Araki, Kazuya Yokota
  • Publication number: 20100217504
    Abstract: A valve overlap period is increased as a desired torque of an engine increases by advancing an opening timing of an intake valve at a rate greater than that of retarding a closing timing of an exhaust valve in a low engine-torque area in which the desired torque of the internal combustion engine is relatively low (step S16). The valve overlap period is increased as the desired torque of the engine increases by retarding the closing timing of the exhaust valve at a rate greater than that of advancing the opening timing of the intake valve in a high engine-torque area in which the desired torque of the internal combustion engine is relatively high (step S17). Accordingly, the drivability can be improved by obtaining the proper torque and the smooth torque curve in the wide driving area.
    Type: Application
    Filed: February 11, 2010
    Publication date: August 26, 2010
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Mikihito FUJII, Kazuya YOKOTA, Naoyuki YAMAGATA, Kazuaki NARAHARA
  • Patent number: 7754757
    Abstract: Novel bicycloester derivatives and pharmaceutically acceptable salts thereof have high DPP-IV inhibitory activity. The novel bicycloester derivatives are represented by the general formula (1): Pharmaceutically acceptable salts thereof are also included (Example: (2S,4S)-1-[[N-(4-ethoxycarbonylbicyclo[2.2.2]oct-1-yl)amino]acetyl]-4-fluoropyrrolidine-2-carbonitrile)).
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: July 13, 2010
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Yasumichi Fukuda, Yoshikazu Asahina, Kohei Ohata, Kazuya Yokota, Koji Murakami, Toshiyuki Matsui
  • Publication number: 20100093825
    Abstract: Summary Novel bicycloester derivatives and pharmaceutically acceptable salts thereof have high DPP-IV inhibitory activity. Solving Means The novel bicycloester derivatives are represented by the general formula (1): Pharmaceutically acceptable salts thereof are also included (Example: (2S,4S)-1-[[(N-(4-ethoxycarbonylbicyclo[2.2.2]oct-1-yl)amino]acetyl]-4-fluoropyrrolidine-2-carbonitrile)).
    Type: Application
    Filed: December 8, 2009
    Publication date: April 15, 2010
    Inventors: Yasumichi Fukuda, Yoshikazu Asahina, Kohei Ohata, Kazuya Yokota, Koji Murakami, Toshiyuki Matsui
  • Patent number: 7514571
    Abstract: A novel bicyclo derivative represented by the following general formula (1), or a pharmaceutically acceptable salt thereof, acts as an effective DPP-IV inhibitor: One example is (2S,4S)-1-[[N-(4-methylbicyclo[2,2,2]oct-1-yl)amino]acetyl]-4-fluoropyrrolidine-2-carbonitrile).
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: April 7, 2009
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Yasumichi Fukuda, Yoshikazu Asahina, Kazuya Yokota, Koji Murakami, Tomohiro Ide
  • Publication number: 20090088958
    Abstract: There is provided a method for starting a spark ignition engine having multiple cylinders. The method may comprise supplying air and fuel for restart into a first cylinder before said engine completely stops, and igniting the mixture of said air and said fuel in said first cylinder in response to an engine restart request, wherein said first cylinder is on an expansion stroke when said engine stops. The method may also include, after said piston in said first cylinder starts moving, injecting fuel into a second cylinder that is on a compression stroke when said engine stops, on a compression stroke where a piston of said second cylinder is moving in a direction opposite to an operative direction of said piston in said first cylinder.
    Type: Application
    Filed: November 25, 2008
    Publication date: April 2, 2009
    Applicant: Mazda Motor Corporation
    Inventors: Noriyuki Ota, Masahiko Fujimoto, Yasushi Murakami, Keiji Araki, Kazuya Yokota
  • Patent number: 7461621
    Abstract: There is provided a method of starting a spark ignition engine having multiple cylinders. The method comprises supplying air and fuel for restart into a first cylinder before the engine completely stops, and igniting the mixture of the air and the fuel in the first cylinder in response to an engine start request. In accordance with the method, by supplying air and fuel into the first cylinder before the engine completely stops, the mixture of air and fuel in the first cylinder may be homogeneous at the time of the engine start request. Also, there may be less mixture turbulence and combustion may propagate better within the cylinder. These conditions may reduce the rate of combustion in the first cylinder after a start request is initiated. The slower combustion rate may decrease temperature of the combusted gas while the cylinder wall temperature is relatively low because the engine has stopped.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: December 9, 2008
    Assignee: Mazda Motor Corporation
    Inventors: Noriyuki Ota, Masahiko Fujimoto, Yasushi Murakami, Keiji Araki, Kazuya Yokota