Patents by Inventor Takashi Kawashima

Takashi Kawashima 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: 9958576
    Abstract: Provided are a near infrared ray absorbent composition which can form a cured film having excellent heat resistance while maintaining high near infrared ray shielding properties, and a near infrared ray cut filter, a manufacturing method of a near infrared ray cut filter, a solid image pickup element, and a camera module using the near infrared ray absorbent composition. The near infrared ray absorbent composition contains a compound having a partial structure represented by M-X, and a near infrared ray absorbent compound, and a content of the compound having a partial structure represented by M-X is greater than or equal to 15 mass % with respect to a total solid content of the near infrared ray absorbent composition.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: May 1, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Takashi Kawashima, Keisuke Arimura
  • Publication number: 20180102723
    Abstract: An in-vehicle inverter driving device is used to perform PWM control of an inverter circuit that drives an electric motor. The electric motor includes a rotor having a permanent magnet and a stator about which three-phase coils are wound. The in-vehicle inverter driving device includes a bootstrap circuit, which uses a capacitor to turn ON upper arm switching elements of the inverter circuit. The in-vehicle inverter driving circuit includes a PWM control section that controls the inverter circuit by a lower-arm-fixing two-phase modulation method. The PWM control section performs shift correction and dead-time correction in the lower-arm-fixing two-phase modulation method.
    Type: Application
    Filed: October 4, 2017
    Publication date: April 12, 2018
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takashi KAWASHIMA, Tomohiro TAKAMI, Kazuki NAJIMA, Yoshiki NAGATA
  • Publication number: 20180094086
    Abstract: The near infrared absorbing composition includes: a copper-containing polymer having a copper complex site at a polymer side chain; and a solvent, in which the copper complex site includes a site multidentate-coordinated to a copper atom and at least one selected from the group consisting of a site monodentate-coordinated to a copper atom and a counter ion to a copper complex skeleton, and a polymer main chain and a copper atom at the copper complex site are bonded to each other through the site monodentate-coordinated to a copper atom or the counter ion.
    Type: Application
    Filed: November 22, 2017
    Publication date: April 5, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Kouitsu SASAKI, Takashi KAWASHIMA, Seiichi HITOMI
  • Publication number: 20180087440
    Abstract: A blast fan includes: a tubular frame having a first opening and a second opening to pass airflow through between the first opening and the second opening. The first opening has a first reverse tapered portion expanding from inside to outside of the frame, and the first reverse tapered portion has a surface having first convex portions projecting to the inside of the frame.
    Type: Application
    Filed: September 26, 2017
    Publication date: March 29, 2018
    Inventors: Yoshihisa YAMAZAKI, Satoshi FUJIMAKI, Takashi KAWASHIMA, Souma ARAKI
  • Patent number: 9926931
    Abstract: A motor-driven compressor is provided with a motor including a rotor, a housing including an inlet through which low-pressure refrigerant serving as a low-pressure fluid is drawn in, a compression unit that compresses the low-pressure refrigerant and discharges compressed high-pressure fluid, an inverter that drives the motor, and a controller that controls the inverter. If the rotor is activating in a reverse direction that is opposite to a forward direction when activating the motor, the controller obtains a position of a d-axis of the rotor and controls the inverter so that current flows to the obtained d-axis and so that frequency of current flowing to the motor decreases as time elapses.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: March 27, 2018
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Shinichi Kawamura, Akimitsu Ichihara, Takashi Kawashima
  • Publication number: 20180070480
    Abstract: A power conversion apparatus includes: a semiconductor module, an electronic component, a plurality of cooling pipes and a casing that accommodates the semiconductor module, the electronic component and the cooling pipes. An abutting surface is provided at a part of the casing, in which the electronic component comes into contact with the abutting surface. A pressurizing member pressurizes the semiconductor module in a first direction extending from the semiconductor module to the electronic component. The electronic component includes a part body and a wing portion and the wing portion protrudes from the part body at least either one side of both sides thereof with respect to a second direction perpendicular to the first direction, and comes into contact with the abutting surface from a semiconductor module side with respect to the first direction.
    Type: Application
    Filed: September 5, 2017
    Publication date: March 8, 2018
    Applicants: DENSO CORPORATION, TOKIN CORPORATION
    Inventors: Naoki HIRASAWA, Ryota TANABE, Takashi KAWASHIMA, Takashi YANBE, Masahiro KONDOU
  • Patent number: 9879108
    Abstract: The composition includes (A) a pigment; and (B) a polymer having (b-1) a bulky amine moiety, (b-2) an acid group, and (b-3) a constituent unit derived from a macromonomer having a weight average molecular weight of 1000 to 50000, in which the bulky amine moiety (b-1) has a nitrogen atom, carbon atoms X1 bonded with the nitrogen atom, and carbon atoms Y1 bonded with the carbon atoms X1, and a total carbon number of the carbon atoms X1 and the carbon atoms Y1 is 7 or more.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: January 30, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Hiroaki Idei, Toshihito Kuge, Takashi Kawashima
  • Patent number: 9826129
    Abstract: Provided are a near-infrared-ray-absorbing composition having strong near-infrared shielding properties when a cured film is produced, a near-infrared-ray cut filter, a manufacturing method therefor, a camera module, and a manufacturing method therefor. The near-infrared-ray-absorbing composition includes a copper complex obtained by reacting a compound (A) having at least two coordination sites with a copper component.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: November 21, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Takeshi Inasaki, Takashi Kawashima, Seiichi Hitomi, Kouitsu Sasaki
  • Patent number: 9812744
    Abstract: The battery pack includes battery cells, bus bars provided for electrical connection among the battery cells, a fluid device that passes a heat transfer medium for exchanging heat with the bus bars or the battery cells, and a control device that obtains data on the bus bars or the battery cells and controls the fluid device based on the obtained data.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: November 7, 2017
    Assignee: DENSO CORPORATION
    Inventors: Hiroyoshi Yamamoto, Yoshimitsu Inoue, Takashi Kawashima
  • Publication number: 20170299008
    Abstract: The present invention relates to a vibration damping device including an outer attachment member (10) connected to one of a vibration generating part and a vibration receiving part, an inner attachment member (20) connected to the other, and an elastic body (30) configured to connect the outer attachment member (10) and the inner attachment member (20), wherein the outer attachment member (10) is formed in a cylindrical shape, the inner attachment member (20) includes a plate-shaped rigid member (21) disposed in the outer attachment member (10) and an interior member (28) located in the outer attachment member (10), fixed to the rigid member (21), and formed of a synthetic resin material, and, at protruding portions (22, 23) of the rigid member (21) which protrude outward from the outer attachment member (10) in an axial direction along a central axis (O) of the outer attachment member (10), mounting holes (22a, 23a) which are open in a diameter direction orthogonal to the axial direction and have a fastening
    Type: Application
    Filed: September 2, 2015
    Publication date: October 19, 2017
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shunji SATOU, Takashi KAWASHIMA
  • Publication number: 20170284409
    Abstract: The control section controls the electric motor to be driven such that the number of revolutions becomes equal to the target number of revolutions. If the control section sets the target number of revolutions to a number of revolutions of the electric motor requested by another control section, the control section changes the number of revolutions of the electric motor at an increase rate lower than or equal to the upper limit value of the increase rate or at a decrease rate lower than or equal to the upper limit value of the decrease rate. If the control section sets the target number of revolutions to a number-of-revolutions limit value, which is determined based on the voltage of a vehicle battery, the control section is able to decrease the number of revolutions of the electric motor at a decrease rate exceeding the upper limit value.
    Type: Application
    Filed: March 24, 2017
    Publication date: October 5, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takashi KAWASHIMA, Yoshiki NAGATA, Kazuki NAJIMA
  • Publication number: 20170279393
    Abstract: An inverter controller is used to control an inverter circuit that drives an electric motor including a rotor and a stator. The inverter controller includes a voltage detector configured to detect input voltage, a current detector configured to detect motor current, an instruction value calculation unit configured to calculate an instruction value based on an external instruction value and a detection result of the current detector, a correction unit configured to calculate a corrected instruction value by correcting the instruction value in accordance with the input voltage, a PWM control unit configured to control the motor current based on the corrected instruction value and the input voltage, and a position estimation unit configured to estimate a rotation position of the rotor based on the instruction value and the detection result of the current detector.
    Type: Application
    Filed: March 24, 2017
    Publication date: September 28, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takashi KAWASHIMA, Yoshiki NAGATA, Masahiko HIRANO
  • Patent number: 9773759
    Abstract: An electric power converter includes a semiconductor module, an electronic component, a plurality of cooling tubes, a case, a main pressure member for pressing a stacked semiconductor section in a stacking direction, and a sub-pressure member for pressing a stacked component section in the stacking direction. The stacked semiconductor section and the stacked component section are stacked in line. A pressing force of the main pressure member is greater than a pressure pressing force of the sub-pressure member. The main pressure member is disposed at an end portion of the stacked component section far from the stacked semiconductor section. A supporting portion that supports the stacked semiconductor section from the stacked component section side is disposed in the case so as to prevent the pressing force of the main pressure member from acting on the stacked component section.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: September 26, 2017
    Assignee: DENSO CORPORATION
    Inventors: Naoki Hirasawa, Ryota Tanabe, Hiromi Ichijo, Takashi Kawashima
  • Publication number: 20170227690
    Abstract: Provided are a near infrared ray absorbent composition which can form a cured film having excellent near infrared ray shielding properties, a near infrared ray cut filter, a manufacturing method of a near infrared ray cut filter, a solid image pickup element, and a camera module. The near infrared ray absorbent composition includes a copper complex that is other than a copper phthalocyanine complex and has a maximum absorption wavelength in a wavelength range of 700 to 1,200 nm and in which a molar light absorption coefficient at the maximum absorption wavelength is greater than or equal to 100 (L/mol·cm).
    Type: Application
    Filed: April 26, 2017
    Publication date: August 10, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Kouitsu SASAKI, Takashi KAWASHIMA, Seiichi HITOMI, Yasuharu SHIRAISHI
  • Patent number: 9698186
    Abstract: A near-infrared-absorbing composition includes a copper compound and a compound having a partial structure represented by Formula (1) described below and the content of the copper compound is in a range of 3×10?3 mol to 1 mol in relation to 1 g of the compound having the partial structure represented by Formula (1) described below, in Formula (1), R1 represents a hydrogen atom or an organic group.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: July 4, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Takashi Kawashima, Hidenori Takahashi, Toshihide Ezoe
  • Patent number: 9698712
    Abstract: An inverter apparatus includes an inverter circuit, a capacitor, and a control unit. In the first control mode, the control unit shifts a phase of at least one of PWM signals of three phases such that a time period during which polarities of output voltages of three phases are the same is shorter in the first control mode than the time period in the second control mode; and controls the inverter circuit so as to supply a direct current to the three-phase AC motor as a d-axis current by outputting the PWM signals of three phases, each having a phase after the phase shift processing. In the second control mode, the control unit controls the inverter circuit so as to supply an alternating current to the three-phase AC motor by outputting the PWM signals of three phases, each having a phase before the phase shift processing.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: July 4, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yoshiki Nagata, Takashi Kawashima
  • Publication number: 20170141082
    Abstract: An electric power converter includes a semiconductor module, an electronic component, a plurality of cooling tubes, a case, a main pressure member for pressing a stacked semiconductor section in a stacking direction, and a sub-pressure member for pressing a stacked component section in the stacking direction. The stacked semiconductor section and the stacked component section are stacked in line. A pressing force of the main pressure member is greater than a pressure pressing force of the sub-pressure member. The main pressure member is disposed at an end portion of the stacked component section far from the stacked semiconductor section. A supporting portion that supports the stacked semiconductor section from the stacked component section side is disposed in the case so as to prevent the pressing force of the main pressure member from acting on the stacked component section.
    Type: Application
    Filed: November 16, 2016
    Publication date: May 18, 2017
    Applicant: DENSO CORPORATION
    Inventors: Naoki HIRASAWA, Ryota TANABE, Hiromi ICHIJO, Takashi KAWASHIMA
  • Publication number: 20170102483
    Abstract: Provided are a near infrared ray absorbent composition which can form a cured film having excellent heat resistance while maintaining high near infrared ray shielding properties, and a near infrared ray cut filter, a manufacturing method of a near infrared ray cut filter, a solid image pickup element, and a camera module using the near infrared ray absorbent composition. The near infrared ray absorbent composition contains a compound having a partial structure represented by M-X, and a near infrared ray absorbent compound, and a content of the compound having a partial structure represented by M-X is greater than or equal to 15 mass % with respect to a total solid content of the near infrared ray absorbent composition.
    Type: Application
    Filed: December 23, 2016
    Publication date: April 13, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Takashi KAWASHIMA, Keisuke ARIMURA
  • Patent number: D788722
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: June 6, 2017
    Assignee: ADVANTEST CORPORATION
    Inventors: Takeshi Okushi, Mitsunori Aizawa, Masanori Nagashima, Takashi Kawashima
  • Patent number: D796978
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: September 12, 2017
    Assignee: ADVANTEST CORPORATION
    Inventors: Takashi Kawashima, Shintaro Takaki