Patents by Inventor Hiroki Takeda

Hiroki Takeda 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: 20190330716
    Abstract: The present disclosure relates to an aluminum alloy sheet having excellent ridging resistance and excellent hem bendability. The aluminum alloy sheet is an aluminum alloy rolled material for molding. The aluminum alloy rolled material includes an aluminum alloy that includes predetermined amounts of Mg, Si, and Mn and satisfies a condition of 0.005?Mn+Cr?0.080 mass %. In the aluminum alloy sheet, the position of a middle (t/2) of a sheet thickness is regarded as a center, the crystal particle diameter d1 of an L-LT plane in a sheet thickness in a range of ±(t/8) from the center is 30 to 80 ?m, the crystal particle diameter d2 of an L-ST plane in the entire sheet thickness is 60 ?m or less, and the cube orientation area rate C of a crystal orientation on a sheet surface is 10% or more.
    Type: Application
    Filed: June 23, 2017
    Publication date: October 31, 2019
    Inventors: Ryo KURAMOTO, Hiroki TAKEDA
  • Patent number: 10451126
    Abstract: A control device of a vehicle power transmission device including a first power transmission path transmitting power by engaging a first clutch, a sub-clutch and a second power transmission path transmitting power by engaging a second clutch each disposed between an engine and drive wheels and parallel to each other, the device including a fail-safe valve for preventing simultaneous engagement of the first and second clutches, the fail-safe valve configured to be switched to a fail-safe spool position preventing simultaneous engagement of the first and second clutches by a hydraulic pressure of a hydraulic fluid supplied to the first clutch or an output pressure of a first electromagnetic valve controlling the hydraulic pressure and the hydraulic pressure of the hydraulic fluid supplied to the second clutch or an output pressure of a second electromagnetic valve controlling the hydraulic pressure, the second electromagnetic valve configured to increase the output pressure.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: October 22, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke Ohgata, Hiroki Kondo, Makoto Sawada, Shinya Toyoda, Shuji Moriyama, Kyohei Suzumura, Hiroki Takeda
  • Publication number: 20190309805
    Abstract: A control apparatus for a vehicle drive-force transmitting apparatus including a dog clutch that is operated by an actuator to selectively connect and disconnect a drive-force transmitting path. In process of switching of the dog clutch from released state to engaged state, the control apparatus determines whether a rotational speed difference of the dog clutch is equal to or larger than a given difference value when a sleeve of the dog clutch is positioned on an engaging side of a synchronizing position for placing the dog clutch into the engaged state, and stops the switching of the dog clutch to the engaged state and causes the actuator to place the dog clutch back into the released state, when determining that the rotational speed difference is equal to or larger than the given difference value with the sleeve being positioned on the engaging side of the synchronizing position.
    Type: Application
    Filed: April 4, 2019
    Publication date: October 10, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Satoshi KAMIJO, Makoto SAWADA, Kenji MATSUO, Kyohei SUZUMURA, Yoshisuke KAMETANI, Michio YOSHIDA, Hiroki TAKEDA, Takashi SEO
  • Publication number: 20190271391
    Abstract: In a control device of a vehicle including a first power transmission path transmitting a power through a belt-type continuously variable transmission and a second power transmission path transmitting a power through a reduction gear mechanism in parallel between an input shaft and an output shaft and including a dog clutch in series with the reduction gear mechanism in the second power transmission path, when the dog clutch is in an engagement transition state and a rotational speed change of the output shaft is equal to or greater than a predetermined value, the engagement transition state of the dog clutch is canceled to release the dog clutch.
    Type: Application
    Filed: March 4, 2019
    Publication date: September 5, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroki TAKEDA, Kyohei SUZUMURA, Yoshisuke KAMETANI, Kenji MATSUO, Satoshi KAMIJO, Michio YOSHIDA, Toshio SUZUKI, Makoto SAWADA, Takashi SEO
  • Patent number: 10370794
    Abstract: Provided is a method for producing paper and a pitch removal agent that can remove pitch efficiently. A pitch removal agent having an average polymerization degree of 300 to 2500, a saponification index of 70 to 88 mol % and satisfying, when the absorbance at a wavelength of 490 nm is designated as y (Abs) and the saponification index as x (mol %), the Numerical Formula (A) below is added to a pulp slurry during production of paper using waste paper in the step of deinking the waste paper by floatation and/or a step earlier: y=?0.0297x+b??(A) (wherein, 70?x?88 and 2.80?b?3.03).
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: August 6, 2019
    Assignees: KURITA WATER INDUSTRIES LTD., MITSUBISHI CHEMICAL CORPORATION
    Inventors: Chigusa Taguchi, Munetoshi Tomita, Hiroki Takeda
  • Publication number: 20190039090
    Abstract: Provided are a brilliant pigment-containing aqueous base coat coating material with which it is possible to ensure waterproof adhesiveness and impart a metallic gloss, and a method for forming a multilayer film using the same. The invention provides a brilliant pigment-containing aqueous base coat coating material including water-dispersible acrylic polymer particles (A), a water-soluble acrylic resin (B), a curing agent (C), and a brilliant pigment (D) obtained by pulverizing a vapor-deposited metal film to create metal chips. The water-soluble acrylic resin (B) is a copolymer of an N-substituted (meth)acrylamide (i), a hydroxyl group-containing polymerizable unsaturated monomer (ii), a carboxyl group-containing polymerizable unsaturated monomer (iii), and a polymerizable unsaturated monomer (iv) other than (i)-(iii). The brilliant pigment (D) is contained in a pigment weight concentration (PWC) in the range of 10-40%.
    Type: Application
    Filed: January 23, 2017
    Publication date: February 7, 2019
    Applicant: KANSAI PAINT CO., LTD.
    Inventors: Hiroki TAKEDA, Tohru IWAMOTO, Hiromi KATOH, Junichi KAJIMA, Shigeru TOMIZAWA
  • Publication number: 20180328422
    Abstract: A control device of a vehicle power transmission device including a first power transmission path transmitting power by engaging a first clutch, a sub-clutch and a second power transmission path transmitting power by engaging a second clutch each disposed between an engine and drive wheels and parallel to each other, the device including a fail-safe valve for preventing simultaneous engagement of the first and second clutches, the fail-safe valve configured to be switched to a fail-safe spool position preventing simultaneous engagement of the first and second clutches by a hydraulic pressure of a hydraulic fluid supplied to the first clutch or an output pressure of a first electromagnetic valve controlling the hydraulic pressure and the hydraulic pressure of the hydraulic fluid supplied to the second clutch or an output pressure of a second electromagnetic valve controlling the hydraulic pressure, the second electromagnetic valve configured to increase the output pressure.
    Type: Application
    Filed: May 9, 2018
    Publication date: November 15, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke OHGATA, Hiroki KONDO, Makoto SAWADA, Shinya TOYODA, Shuji MORIYAMA, Kyohei SUZUMURA, Hiroki TAKEDA
  • Patent number: 10023166
    Abstract: A brake control device capable of preventing a braking force from being excessive when information cannot be transmitted between a first control unit configured to control operation of a boost mechanism and a second control unit configured to control operation of a hydraulic control mechanism. When a second ECU (32) cannot transmit information to a first ECU (26) due to a disconnection of a signal line (27), the second ECU carries out backup control of detecting a braking operation amount of a driver based on signal input from hydraulic pressure sensors (29), and operating a hydraulic pressure supply device (30) based on the detected braking operation amount, to thereby pressurize insides of wheel cylinders. In this case, the second ECU decreases a pressurization amount of a pressure inside the wheel cylinders when a pressure of a master cylinder (8) exceeds a predetermined value (PM0) during the backup control.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: July 17, 2018
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Hiroki Takeda, Tohma Yamaguchi
  • Patent number: 10005945
    Abstract: A drilling fluid adjusting agent using a PVA-based resin capable of contributing to the reduction of hydration swelling of bentonite even in the presence of salts; and a drilling fluid using the same are provided. The drilling fluid adjusting agent contains a PVA containing 1,2-diol structural unit in a side chain thereof. The drilling fluid adjusting agent has excellent solubility even in the presence of salts such as potassium ion, and also has excellent reduction of hydration swelling of bentonite.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: June 26, 2018
    Assignee: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO.. LTD.
    Inventors: Shusaku Mandai, Hiroki Takeda
  • Patent number: 9863315
    Abstract: A gas turbine having a compressor for compressing air, a combustor for taking in compressed air discharged from the compressor, mixing it with fuel, and burning them, and a turbine driven by combustion gas generated in the combustor, comprising: inlet guide vanes installed at a stage near an inlet of the compressor for adjusting a compressor flow rate by changing an attaching angle thereof, a steam injection mechanism for injecting steam to the combustor, a steam adjustment valve for adjusting the steam injection rate, and a steam rate control mechanism for adjusting an opening of the steam adjustment valve, a steam monitoring mechanism for monitoring the steam rate injected to the combustor, an air temperature monitoring mechanism for monitoring an atmospheric temperature, and a control unit for determining whether a restriction value of the steam injection rate using a temperature, an opening of the inlet guide vanes, and the steam injection rate as indexes is satisfied, and controlling at least one of a te
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: January 9, 2018
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Hiroki Takeda, Ryo Akiyama, Yasuo Takahashi
  • Publication number: 20170297546
    Abstract: A brake control device capable of preventing a braking force from being excessive when information cannot be transmitted between a first control unit configured to control operation of a boost mechanism and a second control unit configured to control operation of a hydraulic control mechanism. When a second ECU (32) cannot transmit information to a first ECU (26) due to a disconnection of a signal line (27), the second ECU carries out backup control of detecting a braking operation amount of a driver based on signal input from hydraulic pressure sensors (29), and operating a hydraulic pressure supply device (30) based on the detected braking operation amount, to thereby pressurize insides of wheel cylinders. In this case, the second ECU decreases a pressurization amount of a pressure inside the wheel cylinders when a pressure of a master cylinder (8) exceeds a predetermined value (PM0) during the backup control.
    Type: Application
    Filed: February 22, 2016
    Publication date: October 19, 2017
    Inventors: Hiroki TAKEDA, Tohma YAMAGUCHI
  • Patent number: 9638050
    Abstract: An axial compressor includes: a rotor as a rotational shaft, rotor blades mounted on the rotor, a compressor casing that covers the rotor and the rotor blades, and stator vanes mounted on the compressor casing. The rotor blades and the stator vanes are each disposed in a circumferential direction of the rotational shaft to form a rotor-blade cascade and a stator-vane cascade, respectively. The rotor-blade cascade and the stator-vane cascade are arranged in plural rows, respectively, in an axial direction of the rotational shaft. The stator vane has a dovetail, and the compressor casing has a dovetail groove that extends in the circumferential direction of the rotational shaft to receive the dovetail inserted therein to fix the stator vanes. Two or more stator vanes, the stator vanes belonging to stator-vane cascades different from each other, are fixed in the dovetail groove.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: May 2, 2017
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Hiroki Takeda, Yasuo Takahashi, Chihiro Myoren
  • Patent number: 9610972
    Abstract: An inverter device includes a source current calculator and an inverter circuit, wherein: the source current calculator calculates an average value of the DC bus current Ical during a PWM cycle through arithmetic operation executed based upon instantaneous values of the DC bus current Idc of the inverter circuit; and the source current calculator provides an estimated value by designating the average current value Ical during the PWM cycle as an input source current Isrc during the PWM cycle.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: April 4, 2017
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Toshiyuki Ajima, Kimihisa Furukawa, Tohma Yamaguchi, Hiroki Takeda
  • Publication number: 20170073891
    Abstract: Provided is a method for producing paper and a pitch removal agent that can remove pitch efficiently. A pitch removal agent having an average polymerization degree of 300 to 2500, a saponification index of 70 to 88 mol % and satisfying, when the absorbance at a wavelength of 490 nm is designated as y (Abs) and the saponification index as x (mol %), the Numerical Formula (A) below is added to a pulp slurry during production of paper using waste paper in the step of deinking the waste paper by floatation and/or a step earlier: y=?0.0297x+b??(A) (wherein, 70?x?88 and 2.80?b?3.03).
    Type: Application
    Filed: March 11, 2015
    Publication date: March 16, 2017
    Inventors: Chigusa TAGUCHI, Munetoshi TOMITA, Hiroki TAKEDA
  • Publication number: 20170037294
    Abstract: A drilling fluid adjusting agent using a PVA-based resin capable of contributing to the reduction of hydration swelling of bentonite even in the presence of salts; and a drilling fluid using the same are provided. The drilling fluid adjusting agent contains a PVA containing 1,2-diol structural unit in a side chain thereof. The drilling fluid adjusting agent has excellent solubility even in the presence of salts such as potassium ion, and also has excellent reduction of hydration swelling of bentonite.
    Type: Application
    Filed: December 26, 2014
    Publication date: February 9, 2017
    Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Shusaku Mandai, Hiroki Takeda
  • Publication number: 20170030657
    Abstract: A method of manufacturing a total heat exchange element includes bonding a liner sheet and a corrugated sheet together to prepare a piece of single-faced corrugated cardboard and stacking plural pieces of the single-faced corrugated cardboard obtained in the previous step so that corrugated stripe directions of respective two adjacent pieces of single-faced corrugated cardboard are allowed to cross with each other, wherein a moisture absorbent is contained in at least a part of each of the liner sheet and the corrugated sheet, and R1 is 1 to 20 g/m2 and R1/R2 is 0.5 to 2.0 when, before pieces of single-faced corrugated cardboard are stacked, the content of the moisture absorbent in the liner sheet and the content of the moisture absorbent in the corrugated sheet are defined as R1 and R2, respectively.
    Type: Application
    Filed: December 15, 2014
    Publication date: February 2, 2017
    Inventors: Taira OMORI, Tomomichi FUJIYAMA, Hiroki TAKEDA, Katsuya SODE
  • Publication number: 20160252269
    Abstract: A heat exchange element has a liner sheet high in water vapor transmission properties and gas shielding properties, specifically, and is prepared by combining a piece of single-faced corrugated cardboard 1 constituted of a liner sheet 1 with a carbon dioxide shielding rate of greater than or equal to 95% and a corrugated sheet 1 and a piece of single-faced corrugated cardboard 2 constituted of a liner sheet 2 with a water vapor permeability of greater than or equal to 80 g/m2·hr and a corrugated sheet 2, and a heat exchanger.
    Type: Application
    Filed: September 30, 2014
    Publication date: September 1, 2016
    Inventors: Hiroki Takeda, Tomomichi Fujiyama, Taira Omori, Katsuya Sode
  • Publication number: 20160237620
    Abstract: A base paper for heat exchangers having a stacked structure including at least one layer of a first layer composed mainly of a fibrous substance with a Canadian standard freeness specified in JIS P8121 (1995) of less than 150 ml and at least one layer of a second layer composed mainly of a fibrous substance with a Canadian standard freeness specified in JIS P8121 (1995) of greater than or equal to 150 ml, and a total heat exchange element prepared by stacking pieces of corrugated cardboard in which the base paper for heat exchange is used as a part thereof.
    Type: Application
    Filed: September 30, 2014
    Publication date: August 18, 2016
    Applicant: Toray Industries, Inc.
    Inventors: Hiroki Takeda, Tomomichi Fujiyama, Taira Omori, Katsuya Sode
  • Publication number: 20160028342
    Abstract: An electric motor drive device which drives an electric motor includes switching elements which are respectively connected to output lines and correspond to upper and lower arms of respective phases, a control unit which controls the operations of the switching elements, a smoothing capacitor connected in parallel with series circuits of the upper and lower arms of the phases, and an abnormality detection unit. The abnormality detection unit detects a voltage value of a virtual neutral point as a value related to the state of insulation of each of the output lines and detects a ground fault of the output line, based on a tilt of a temporary change in the detected value.
    Type: Application
    Filed: April 21, 2015
    Publication date: January 28, 2016
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Kimihisa FURUKAWA, Toshiyuki AJIMA, Tohma YAMAGUCHI, Hiroki TAKEDA, Nobuhiko OKABE
  • Publication number: 20150303844
    Abstract: An inverter device includes a source current calculator and an inverter circuit, wherein: the source current calculator calculates an average value of the DC bus current Ical during a PWM cycle through arithmetic operation executed based upon instantaneous values of the DC bus current Idc of the inverter circuit; and the source current calculator provides an estimated value by designating the average current value Ical during the PWM cycle as an input source current Isrc during the PWM cycle.
    Type: Application
    Filed: April 16, 2015
    Publication date: October 22, 2015
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Toshiyuki AJIMA, Kimihisa FURUKAWA, Tohma YAMAGUCHI, Hiroki TAKEDA