Patents by Inventor Masafumi OKUDA

Masafumi OKUDA 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: 10676076
    Abstract: A control device includes an electronic control unit configured to selectively execute traveling in a first traveling mode and traveling in a second traveling mode, the first traveling mode being a traveling mode in which in a state where one engagement device is controlled so as to be engaged, a differential state is controlled by a first rotating machine to transmit torque of an engine, and the second traveling mode being a traveling mode in which in a state where the other engagement device is controlled so as to be engaged, a differential state is controlled to transmit torque of the engine, and perform switching to traveling in the second traveling mode in a case where a vehicle speed is equal to or higher than a predetermined vehicle speed when engine stop control that stops the engine is executed during traveling in the first traveling mode.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: June 9, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masafumi Yamamoto, Atsushi Tabata, Tatsuya Imamura, Koichi Okuda
  • Patent number: 10644483
    Abstract: A plurality of assemblies are prepared, and a predetermined voltage is applied to a center electrode of each of the plurality of assemblies. The voltage applied to each of the plurality of center electrodes is detected by respective voltage sensors, and a differentiated value is calculated by differentiating the applied voltage, detected by each voltage sensor, with respect to time. A judgment is made as to whether or not a differentiated value change state in which an absolute value of the differentiated value becomes equal to or greater than a predetermined threshold value occurs. A judgment is made as to whether or not the occurrence of the differentiated value change state is caused by the noise, according to the voltage applied, for a specific time from the occurrence of the differentiated value change state, to the center electrode where the differentiated value change state has occurred.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: May 5, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventor: Masafumi Okuda
  • Publication number: 20200061683
    Abstract: A subsurface soil purification method including: warming an activator liquid, for stimulating decomposer microorganisms that decompose a contaminant in subsurface soil, to a higher temperature than a groundwater temperature, and feeding the activator liquid into the subsurface soil by injecting the activator liquid into an in-ground injection well; warming an activator liquid, for stimulating decomposer microorganisms that decompose a contaminant in subsurface soil, the decomposer microorganisms being infused in the activator liquid, to a higher temperature than a groundwater temperature, and feeding the activator liquid into the subsurface soil by injecting the activator liquid into an in-ground injection well, or warming a purification liquid for decomposing a contaminant in subsurface soil, to a higher temperature than a groundwater temperature, and feeding the purification liquid into the subsurface soil by injecting the purification liquid into an in-ground injection well.
    Type: Application
    Filed: August 29, 2017
    Publication date: February 27, 2020
    Applicants: TAKENAKA CORPORATION, TAKENAKA CIVIL ENGINEERING & CONSTRUCTION CO., LTD.
    Inventors: Kaoru INABA, Yuji YAMAZAKI, Takaaki SHIMIZU, Nobuyasu OKUDA, Yasuhide FURUKAWA, Tomohiro NAKASHIMA, Haruka KIYOTOMO, Kazuhiro MUKAI, Masafumi FUNAKAWA, Ai HASEGAWA, Keisuke OMURA, Kota TANABE
  • Publication number: 20200044421
    Abstract: A plurality of assemblies are prepared, and a predetermined voltage is applied to a center electrode of each of the plurality of assemblies. The voltage applied to each of the plurality of center electrodes is detected by respective voltage sensors, and a differentiated value is calculated by differentiating the applied voltage, detected by each voltage sensor, with respect to time. A judgment is made as to whether or not a differentiated value change state in which an absolute value of the differentiated value becomes equal to or greater than a predetermined threshold value occurs. A judgment is made as to whether or not the occurrence of the differentiated value change state is caused by the noise, according to the voltage applied, for a specific time from the occurrence of the differentiated value change state, to the center electrode where the differentiated value change state has occurred.
    Type: Application
    Filed: July 24, 2019
    Publication date: February 6, 2020
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventor: Masafumi OKUDA
  • Patent number: 10447015
    Abstract: A method of producing a spark plug comprises (a) a step of combining a metallic shell and an insulator; (b) a step of inserting a portion of the assembly on its forward end side into a pressure container; (c) a step of bringing an insulating member into contact with the outer circumferential surface of a base side portion of the insulator over the entire circumference thereof, and pressing the assembly so as to close the opening by the assembly; and (d) a step of pressurizing the interior of the pressure container and applying a predetermined voltage between the terminal electrode and the metallic shell.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: October 15, 2019
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Masafumi Okuda, Toshiyuki Otsuki, Kanako Nishiyama
  • Publication number: 20190193129
    Abstract: A subsurface soil purification method includes a first process of injecting a cleaning liquid, that separates a contaminant in subsurface soil from the subsurface soil and that has been warmed to a higher temperature than a groundwater temperature, into an injection well provided in the ground, and a second process of pumping up groundwater containing the cleaning liquid, in which the contaminant separated from the subsurface soil has been dissolved, from a pumping well that is provided in the ground so as to be spaced apart from the injection well.
    Type: Application
    Filed: August 29, 2017
    Publication date: June 27, 2019
    Inventors: Yuji YAMAZAKI, Takaaki SHIMIZU, Nobuyasu OKUDA, Yasuhide FURUKAWA, Tomohiro NAKASHIMA, Haruka KIYOTOMO, Kazuhiro MUKAI, Kaoru INABA, Koudai MAE, Masafumi FUNAKAWA, Ai HASEGAWA, Keisuke OMURA, Kota TANABE
  • Publication number: 20190199070
    Abstract: A method of producing a spark plug comprises (a) a step of combining a metallic shell and an insulator; (b) a step of inserting a portion of the assembly on its forward end side into a pressure container; (c) a step of bringing an insulating member into contact with the outer circumferential surface of a base side portion of the insulator over the entire circumference thereof, and pressing the assembly so as to close the opening by the assembly; and (d) a step of pressurizing the interior of the pressure container and applying a predetermined voltage between the terminal electrode and the metallic shell.
    Type: Application
    Filed: March 1, 2019
    Publication date: June 27, 2019
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Masafumi OKUDA, Toshiyuki OTSUKI, Kanako NISHIYAMA
  • Patent number: 10270229
    Abstract: A method of producing a spark plug comprises (a) a step of combining a metallic shell and an insulator; (b) a step of inserting a portion of the assembly on its forward end side into a pressure container; (c) a step of bringing an insulating member into contact with the outer circumferential surface of a base side portion of the insulator over the entire circumference thereof, and pressing the assembly so as to close the opening by the assembly; and (d) a step of pressurizing the interior of the pressure container and applying a predetermined voltage between the terminal electrode and the metallic shell, wherein the step (b) includes a step of inserting the portion of the assembly on the forward end side into the pressure container such that a gap formed between the outer surface of the insulator and the inner surface of the metallic shell on the forward end side of the assembly is disposed in the pressure container.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: April 23, 2019
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Masafumi Okuda, Toshiyuki Otsuki, Kanako Nishiyama
  • Patent number: 10205306
    Abstract: A method for producing a spark plug, including an inspection step for an insulator includes: (a) a step of preparing an assembly; (b) a step of attaching the assembly to a pressure vessel; (c) a step of attaching an insulating member to the assembly so as to cover at least a part of a surface of a portion of the insulator that is exposed at the rear side; and (d) a step of pressurizing an interior of the pressure vessel and applying a predetermined voltage between the metal terminal and the metal shell. The producing method further includes a step of adhering a lubricant to at least one of a surface of the insulator and an inner surface of the insulating member.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: February 12, 2019
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Masafumi Okuda, Toshiyuki Otsuki, Kanako Nishiyama
  • Publication number: 20180183217
    Abstract: A method of producing a spark plug comprises (a) a step of combining a metallic shell and an insulator; (b) a step of inserting a portion of the assembly on its forward end side into a pressure container; (c) a step of bringing an insulating member into contact with the outer circumferential surface of a base side portion of the insulator over the entire circumference thereof, and pressing the assembly so as to close the opening by the assembly; and (d) a step of pressurizing the interior of the pressure container and applying a predetermined voltage between the terminal electrode and the metallic shell, wherein the step (b) includes a step of inserting the portion of the assembly on the forward end side into the pressure container such that a gap formed between the outer surface of the insulator and the inner surface of the metallic shell on the forward end side of the assembly is disposed in the pressure container.
    Type: Application
    Filed: March 17, 2016
    Publication date: June 28, 2018
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Masafumi OKUDA, Toshiyuki OTSUKI, Kanako NISHIYAMA
  • Publication number: 20180069379
    Abstract: A method for producing a spark plug, including an inspection step for an insulator includes: (a) a step of preparing an assembly; (b) a step of attaching the assembly to a pressure vessel; (c) a step of attaching an insulating member to the assembly so as to cover at least a part of a surface of a portion of the insulator that is exposed at the rear side; and (d) a step of pressurizing an interior of the pressure vessel and applying a predetermined voltage between the metal terminal and the metal shell. The producing method further includes a step of adhering a lubricant to at least one of a surface of the insulator and an inner surface of the insulating member.
    Type: Application
    Filed: September 1, 2017
    Publication date: March 8, 2018
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Masafumi OKUDA, Toshiyuki OTSUKI, Kanako NISHIYAMA