Patents by Inventor Kohei Yoshida

Kohei Yoshida 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: 20200112237
    Abstract: A method of manufacturing a rotor includes mounting a plurality of core members to a shaft in a state by inserting the shaft into a shaft hole that penetrates through the plurality of core members in a height direction. An inner diameter of the shaft hole is larger than an outer diameter of the shaft. The method includes pressing the plurality of stacked core members together in the height direction to form a stack in which the plurality of core members are located adjacent to each other, and the shaft hole is engaged with the shaft.
    Type: Application
    Filed: October 3, 2019
    Publication date: April 9, 2020
    Applicants: Mitsui High-tec, Inc., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kohei YOSHIDA, Shinya SANO
  • Publication number: 20200104374
    Abstract: There is provided an electronic device including a display, a designation device configured to designate any range of a character string displayed on the display by a user, and a processor. The processor is configured to target as a processing target at least one character included in the range designated by the designation device, determine to which of a plurality of predetermined combinations a combination of a character type of the at least one character and a position of the at least one character in the range corresponds, and execute a process on characters included in the designated range based on the determined combination.
    Type: Application
    Filed: September 11, 2019
    Publication date: April 2, 2020
    Inventor: Kohei Yoshida
  • Publication number: 20200104023
    Abstract: An electronic device includes a processor. The processor sets a start position of a drag operation on a text-displaying display, as a reference position for processing of a displayed text, and then performs a first operation including selecting, when the position of the drag operation has moved to a first relative position relative to the reference position, a character range in the text according to the drag operation, and setting, when the position of the drag operation has moved to a second relative position relative to the reference position, this second position as the new reference position.
    Type: Application
    Filed: September 16, 2019
    Publication date: April 2, 2020
    Inventor: Kohei Yoshida
  • Publication number: 20200091802
    Abstract: A method of manufacturing a rotor core includes: acquiring individual weights of a plurality of permanent magnets to identify heavier permanent magnets and lighter permanent magnets based on a comparison of the individual weights; obtaining first to Nth magnet sets by combining at least one of the heavier permanent magnets and at least one of the lighter permanent magnets into each magnet set, wherein N is a natural number equal to or greater than 2; preparing a core body configured to rotate around a predetermined rotational axis, the core body including first to Nth attaching locations arranged in a circumferential direction of the rotational axis; and attaching each of the first to Nth magnet sets to a different oneof the first to Nth attaching locations.
    Type: Application
    Filed: November 21, 2019
    Publication date: March 19, 2020
    Applicant: Mitsui High-tec, Inc.
    Inventor: Kohei YOSHIDA
  • Publication number: 20200043651
    Abstract: According to one embodiment, a method for manufacturing an iron core product includes providing an iron core body which includes a magnet insertion hole in which a permanent magnet is disposed, injecting a molten resin into the magnet insertion hole of the iron core body at a first pressure, and setting a pressure applied to the molten resin to a second pressure lower than the first pressure after the molten resin is injected into the magnet insertion hole and before the molten resin is cured.
    Type: Application
    Filed: July 17, 2019
    Publication date: February 6, 2020
    Applicant: MITSUI HIGH-TEC, INC.
    Inventors: Takashi FUKUMOTO, Kohei YOSHIDA, Junya SATAKE
  • Patent number: 10468950
    Abstract: This disclosure relates to a method of manufacturing a laminated core including a plurality of poles arranged side by side in a circumferential direction, each pole having three or more magnet housing holes and magnets housed in the magnet housing holes. The manufacturing method includes: a step of preparing a lamination having the magnet housing holes; a step of injecting sealing resin into a pair of magnet housing holes arranged at symmetric positions with respect to a line extending in a radial direction of the lamination, with the magnets being disposed in the pair of respective magnet housing holes; and a step of injecting sealing resin into another magnet housing hole, with the magnet being disposed in the magnet housing hole.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: November 5, 2019
    Assignees: MITSUI HIGH-TEC, INC., TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Kohei Yoshida, Junya Satake, Keiichi Kaneshige, Meio Gi
  • Patent number: 10283264
    Abstract: In a method of manufacturing a laminated core, a laminated core body 14 including magnet insertion holes 12 and 13 with magnet pieces 15 inserted therein is placed between a molding (upper) die 10 and a retaining (lower) die 11, and a molding resin 19 is filled from resin reservoir portions (pots) 16 to fix the pieces 15 in the holes 12 and 13. Between the die 10 and the body 14, a guide member 18 is placed, which includes resin passages 31 provided from the portions 16 to the holes 12 and 13 and gates 30 connecting to the holes 12 and 13 on downstream sides of the passages 31. The method can reduce lead time of a production line without replacing the molding dies for different laminated rotor cores and thus without preparing different types of molding dies.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: May 7, 2019
    Assignee: MISTUI HIGH-TEC, INC.
    Inventors: Akira Nagai, Go Kato, Kohei Yoshida
  • Patent number: 10184379
    Abstract: A particulate filter for trapping the particulate matter which is contained in the exhaust gas is provided inside an engine exhaust passage. Additional fuel is secondarily injected from a fuel injector in an engine expansion stroke or exhaust stroke or hydrocarbons are secondarily added from an addition valve which is provided upstream of the particulate filter in the exhaust pipe. An amount of hydrocarbons which come from the fuel injector or addition valve and then adhere in the form of a liquid to the inflow end of the particulate filter, and an amount of particulate matter which reaches the inflow end of the particulate filter are respectively estimated. A degree of clogging at the inflow end of the particulate filter is estimated based on the amount of hydrocarbons and the amount of particulate matter.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: January 22, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuhiro Umemoto, Kohei Yoshida
  • Publication number: 20180316034
    Abstract: A method for producing a resin frame equipped membrane electrode assembly includes: a first conveyance step of supporting a sheet-shaped member having a cathode and an electrolyte membrane by a resin frame member to which the sheet-shaped member is joined and linearly conveying the supported sheet-shaped member to a pressure bonding device; a second conveyance step of conveying an anode to the pressure bonding device by way of a rotary table; and a pressure bonding step of heating and pressing the cathode and the anode from above and below by the pressure bonding device to thereby integrate the cathode and the anode together.
    Type: Application
    Filed: April 24, 2018
    Publication date: November 1, 2018
    Inventors: Kohei Yoshida, Kensuke Namba, Yosuke Konno, Masami Kurimoto, Yusuke Wada
  • Patent number: 10054020
    Abstract: During execution of a first purification process of fluctuating a hydrocarbon concentration in exhaust gas flowing into a first catalyst with an amplitude within a prescribed range at a time interval within a prescribed range, when a switch request to a second purification process of purifying NOx in a second catalyst by adding urea water into the exhaust gas is generated, the switch to the second purification process is prohibited on the condition that a current NOx purification rate (a first purification rate R1) is higher than a purification rate (a second purification rate R2) on the assumption that the second purification process is executed, and an HC poisoning recovery stand-by process of reducing an additive amount of hydrocarbon per once in the first purification process is executed so as to reduce a slip amount of hydrocarbon into the downstream of the first catalyst.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: August 21, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kohei Yoshida
  • Publication number: 20180204676
    Abstract: In a method of manufacturing a laminated core, a laminated core body 14 including magnet insertion holes 12 and 13 with magnet pieces 15 inserted therein is placed between a molding (upper) die 10 and a retaining (lower) die 11, and a molding resin 19 is filled from resin reservoir portions (pots) 16 to fix the pieces 15 in the holes 12 and 13. Between the die 10 and the body 14, a guide member 18 is placed, which includes resin passages 31 provided from the portions 16 to the holes 12 and 13 and gates 30 connecting to the holes 12 and 13 on downstream sides of the passages 31. The method can reduce lead time of a production line without replacing the molding dies for different laminated rotor cores and thus without preparing different types of molding dies.
    Type: Application
    Filed: March 6, 2018
    Publication date: July 19, 2018
    Applicant: MITSUI HIGH-TEC, INC.
    Inventors: Akira Nagai, Go Kato, Kohei Yoshida
  • Patent number: 9947464
    Abstract: In a method of manufacturing a laminated core, a laminated core body 14 including magnet insertion holes 12 and 13 with magnet pieces 15 inserted therein is placed between a molding (upper) die 10 and a retaining (lower) die 11, and a molding resin 19 is filled from resin reservoir portions (pots) 16 to fix the pieces 15 in the holes 12 and 13. Between the die 10 and the body 14, a guide member 18 is placed, which includes resin passages 31 provided from the portions 16 to the holes 12 and 13 and gates 30 connecting to the holes 12 and 13 on downstream sides of the passages 31. The method can reduce lead time of a production line without replacing the molding dies for different laminated rotor cores and thus without preparing different types of molding dies.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: April 17, 2018
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Akira Nagai, Go Kato, Kohei Yoshida
  • Patent number: 9926826
    Abstract: An internal combustion engine is provided with a hydrocarbon feed valve arranged in an engine exhaust passage. When injection control for injecting hydrocarbons from the hydrocarbon feed valve for exhaust treatment is stopped, to prevent the hydrocarbon feed valve from clogging, hydrocarbons for preventing clogging are injected from the hydrocarbon feed valve when the engine is not discharging soot, that is, when the feed of fuel to the inside of the combustion chamber is stopped and, after hydrocarbons for preventing clogging are injected once, the injection of hydrocarbons for preventing clogging from the hydrocarbon feed valve is stopped until injection control for exhaust treatment is started.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: March 27, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuhiro Umemoto, Kohei Yoshida, Yuki Bisaiji
  • Patent number: 9890679
    Abstract: An internal combustion engine in which a hydrocarbon feed valve, exhaust purification catalyst, and NOX selective reduction catalyst are arranged in an engine exhaust passage. A first NOX removal method which injects hydrocarbons from the hydrocarbon feed valve within a predetermined range of period and uses the reducing intermediate which is generated due to this so as to reduce the NOX contained in the exhaust gas and a second NOX removal method which makes the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst rich with a period longer than this predetermined range are used. When the first NOX removal method should be used and the amount of adsorbed ammonia at the NOX selective reduction catalyst is large, use of the first NOX removal method is stopped.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: February 13, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Bisaiji, Kohei Yoshida
  • Patent number: 9845756
    Abstract: A three-way catalyst and an NOx adsorption catalyst are disposed in an engine exhaust passage. In a predetermined low-load engine operation area, combustion in a combustion chamber is carried out at a lean base air-fuel ratio and an air-fuel ratio in the combustion chamber is changed to a rich range at the time of discharging NOx from the NOx adsorption catalyst. In a predetermined high-load engine operation area, the air-fuel ratio in the combustion chamber is controlled to a theoretical air-fuel ratio in a feedback manner. In a predetermined middle-load engine operation area, the combustion in the combustion chamber is carried out at the base air-fuel ratio lower than the base air-fuel ratio in the low-load engine operation area and the air-fuel ratio in the combustion chamber is changed to the rich range with a period shorter than a rich period of the air-fuel ratio for discharging NOx in the low-load engine operation area.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: December 19, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Bisaiji, Kohei Yoshida, Kenji Sakurai, Kohki Nakamura
  • Publication number: 20170292423
    Abstract: During execution of a first purification process of fluctuating a hydrocarbon concentration in exhaust gas flowing into a first catalyst with an amplitude within a prescribed range at a time interval within a prescribed range, when a switch request to a second purification process of purifying NOx in a second catalyst by adding urea water into the exhaust gas is generated, the switch to the second purification process is prohibited on the condition that a current NOx purification rate (a first purification rate R1) is higher than a purification rate (a second purification rate R2) on the assumption that the second purification process is executed, and an HC poisoning recovery stand-by process of reducing an additive amount of hydrocarbon per once in the first purification process is executed so as to reduce a slip amount of hydrocarbon into the downstream of the first catalyst.
    Type: Application
    Filed: March 31, 2017
    Publication date: October 12, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kohei YOSHIDA
  • Patent number: 9786630
    Abstract: A semiconductor device manufacturing method improves the yield of manufacturing semiconductor devices. There are provided an insulating film for covering multiple bonding pads, a first protective film over the insulating film, and a second protective film over the first protective film. In semiconductor chips, multiple electrode layers are coupled electrically to each of the bonding pads via first openings formed in the insulating film and second openings formed in the first protective film. Multiple bump electrodes are coupled electrically to each of the electrode layers via third openings formed in the second protective film. In pseudo chips, the second openings are formed in the first protective film and the third openings are formed in the second protective film. The insulating film is exposed at the bottom of the second openings coinciding with the third openings. A protective tape is applied to a principal plane to cover the bump electrodes.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: October 10, 2017
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Yuichi Ota, Kentaro Kita, Takehiro Oura, Kohei Yoshida
  • Patent number: 9784155
    Abstract: In an internal combustion engine, an exhaust purification catalyst (13), hydrocarbon feed valve (15) and particulate filter (14) are arranged in an exhaust passage. If temperature increasing control should be performed when a first NOX purification method is performed, injection of hydrocarbons for the first NOX purification method is performed with a predetermined period and injection of hydrocarbons for temperature increasing control is performed in a time period when injection of hydrocarbons for the first NOX purification method is not performed, the first NOX purification method being configured to purify NOX which is contained in the exhaust gas by injecting hydrocarbons from the hydrocarbon feed valve with the predetermined period, the temperature increasing control being configured to increase a temperature of the particulate filter to remove particulate matters trapped on the particulate filter.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: October 10, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kohei Yoshida, Yoshiteru Yazawa
  • Patent number: 9776134
    Abstract: In an internal combustion engine of the present invention, an exhaust purification catalyst (13) and a hydrocarbon supply valve (15) are disposed in an engine exhaust path, and NOx contained in exhaust gas is purified by injecting hydrocarbon from the hydrocarbon supply valve (15) at a predetermined cycle. With respect to the injection amount per unit time of the hydrocarbon from the hydrocarbon supply valve (15), there is a difference provided between the first half and the second half of one injection time period, and in the first-half injection time period (Y), the injection amount per unit time of hydrocarbon is made to be less as compared to the second-half injection time period (X).
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: October 3, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Toru Uenishi, Kohei Yoshida, Mikio Inoue
  • Publication number: 20170248060
    Abstract: A particulate filter for trapping the particulate matter which is contained in the exhaust gas is provided inside an engine exhaust passage. Additional fuel is secondarily injected from a fuel injector in an engine expansion stroke or exhaust stroke or hydrocarbons are secondarily added from an addition valve which is provided upstream of the particulate filter in the exhaust pipe. An amount of hydrocarbons which come from the fuel injector or addition valve and then adhere in the form of a liquid to the inflow end of the particulate filter, and an amount of particulate matter which reaches the inflow end of the particulate filter are respectively estimated. A degree of clogging at the inflow end of the particulate filter is estimated based on the amount of hydrocarbons and the amount of particulate matter.
    Type: Application
    Filed: July 2, 2015
    Publication date: August 31, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuhiro UMEMOTO, Kohei YOSHIDA