Patents by Inventor Hisato Takeuchi

Hisato Takeuchi 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: 20210363380
    Abstract: A sealing resin composition contains an epoxy resin (A), a curing agent (B) having at least one amino group in one molecule, and an inorganic filler (C), wherein the inorganic filler (C) contains a first inorganic filler (C1) having an average particle size from 0.1 ?m to 20 ?m and a second inorganic filler (C2) having an average particle size from 10 nm to 80 nm, and a value obtained by multiplying a specific surface area of the inorganic filler (C), by a proportion of a mass of the inorganic filler (C) in a solid mass of the sealing resin composition, is 4.0 mm2/g or more.
    Type: Application
    Filed: August 3, 2021
    Publication date: November 25, 2021
    Inventors: Yuma TAKEUCHI, Hisato TAKAHASHI, Yoshihito INABA
  • Patent number: 11149164
    Abstract: A sealing resin composition contains an epoxy resin (A), a curing agent (B) having at least one amino group in one molecule, and an inorganic filler (C), wherein the inorganic filler (C) contains a first inorganic filler (C1) having an average particle size from 0.1 ?m to 20 ?m and a second inorganic filler (C2) having an average particle size from 10 nm to 80 nm, and a value obtained by multiplying a specific surface area of the inorganic filler (C), by a proportion of a mass of the inorganic filler (C) in a solid mass of the sealing resin composition, is 4.0 mm2/g or more.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: October 19, 2021
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Yuma Takeuchi, Hisato Takahashi, Yoshihito Inaba
  • Patent number: 11111407
    Abstract: A sealing resin composition contains an epoxy resin (A), a curing agent (B) having at least one amino group in one molecule, and an inorganic filler (C), wherein the inorganic filler (C) contains a first inorganic filler (C1) having an average particle size from 0.1 ?m to 20 ?m and a second inorganic filler (C2) having an average particle size from 10 nm to 80 nm, and a value obtained by multiplying a specific surface area of the inorganic filler (C), by a proportion of a mass of the inorganic filler (C) in a solid mass of the sealing resin composition, is 4.0 mm2/g or more.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: September 7, 2021
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Yuma Takeuchi, Hisato Takahashi, Yoshihito Inaba
  • Publication number: 20190276720
    Abstract: Provided is a joined body comprising a first joined member, a second joined member, and a joining layer that joins the first joined member and the second joined member, wherein the first joined member and the second joined member are each independently one selected from the group consisting of a metal member, a polyamide resin member, and a polyolefin resin member, the joining layer is a layer formed of a resin composition having a co-continuous phase including a continuous phase A formed of the polyamide resin and a continuous phase B formed of the polyolefin resin and has a dispersed domain a distributed in the continuous phase A, a finely dispersed subdomain a? distributed in the dispersed domain a, a dispersed domain b distributed in the continuous phase B, and a finely dispersed subdomain b? distributed in the dispersed domain b.
    Type: Application
    Filed: February 27, 2019
    Publication date: September 12, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hisato Takeuchi, Jumpei Kawada, Azusa Tsukigase, Natsu Takagi, Takuya Mitsuoka, Kazuhiko Umemoto
  • Patent number: 8228131
    Abstract: In a crystal-oscillator circuit having a quartz crystal unit, further stabilization of output frequency change at a time of startup of the power supply is achieved. A crystal-oscillator circuit having a quartz crystal unit includes a first variable-capacitance element, which forms an oscillation loop with the quartz crystal unit, and a temperature compensation circuit which provides a first control signal for the first variable-capacitance element to compensate for a temperature characteristic of the quartz crystal unit. In addition, the crystal-oscillator circuit includes a second variable-capacitance element group, and a time constant circuit which provides a time constant signal, which changes with a predetermined time constant, for the second variable-capacitance element group as a second control signal.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: July 24, 2012
    Assignee: Panasonic Corporation
    Inventors: Kei Nagatomo, Hisato Takeuchi, Shuuji Shibuya
  • Patent number: 8063207
    Abstract: A molecular assembly comprising a host metal complex with a space formed therein, and compounds having substituents enclosed in the metal complex within the space and molecular chains bonded to the substituents and extending to the exterior of the metal complex, wherein two or more substituents are enclosed in the same space of the metal complex.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: November 22, 2011
    Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, The University of Tokyo
    Inventors: Kazuhiko Umemoto, Hisato Takeuchi, Hiroshi Nakamura, Arimitsu Usuki, Makoto Fujita
  • Publication number: 20110227655
    Abstract: In a crystal-oscillator circuit having a quartz crystal unit, further stabilization of output frequency change at a time of startup of the power supply is achieved. A crystal-oscillator circuit having a quartz crystal unit includes a first variable-capacitance element, which forms an oscillation loop with the quartz crystal unit, and a temperature compensation circuit which provides a first control signal for the first variable-capacitance element to compensate for a temperature characteristic of the quartz crystal unit. In addition, the crystal-oscillator circuit includes a second variable-capacitance element group, and a time constant circuit which provides a time constant signal, which changes with a predetermined time constant, for the second variable-capacitance element group as a second control signal.
    Type: Application
    Filed: January 12, 2011
    Publication date: September 22, 2011
    Inventors: Kei NAGATOMO, Hisato Takeuchi, Shuuji Shibuya
  • Patent number: 7847645
    Abstract: An oscillation control apparatus is provided with: an oscillating unit for oscillating an oscillating element; an output amplifying circuit having two pieces of same types of transistors series-connected to each other, for outputting a signal from a junction point between the two transistors in response to an oscillation signal outputted from the oscillating unit; a bias unit for generating two DC bias voltages having different levels from each other, which are applied to either respective gates or respective bases of the two transistors; a constant voltage power supply unit for applying a constant voltage to the oscillating unit; and an inverter unit provided between the oscillating unit and any one of either the gates or the bases of the two transistors, for inverting a phase of the oscillation signal outputted from the oscillating unit.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: December 7, 2010
    Assignee: Panasonic Corporation
    Inventor: Hisato Takeuchi
  • Patent number: 7808333
    Abstract: A temperature-compensated crystal oscillator includes a mode selector circuit 100, a control logic serial•interface 200, a PROM circuit 300, an oscillation control circuit 400 and an oscillation circuit 500, and has, as terminals, a power terminal (VCC/CLK) 11, an input terminal (VC/DATA/PE) 12, an output terminal (OUT) 13 and a ground terminal (GND) 14. The mode selector circuit 100 switches the crystal oscillator to an emulation mode when a first signal in which a power voltage and a clock signal supplied through the power terminal 11 are superimposed, is inputted from the power terminal and a second signal having a predetermined pattern is inputted from the input terminal 12.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: October 5, 2010
    Assignee: Panasonic Corporation
    Inventors: Hisato Takeuchi, Keigo Shingu, Kei Nagatomo
  • Patent number: 7633350
    Abstract: A first order function generation circuit receives a signal from a temperature sensor circuit, and generates a first order function control signal V1 that is affected by the ambient temperature. A fourth order and fifth order approximation function generation circuit receives signals from the temperature sensor circuit and from the third order approximation function generation circuit, and generates a fourth and fifth order approximation function control signal V45 that is affected by the ambient temperature. A peak change point adjustment circuit outputs a signal to adjust the value of a peak change point temperature Ti for the third order approximation function generation circuit, the first order generation function circuit and the fourth order and fifth order approximation function generation circuit. A temperature compensation circuit adds together control signals V0, V1, V3 and V5, and outputs the resultant signal Vc.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: December 15, 2009
    Assignee: Panasonic Corporation
    Inventors: Kei Nagatomo, Hisato Takeuchi, Keigo Shingu
  • Patent number: 7579917
    Abstract: The object of the present invention is to provide a crystal oscillator with one IC capable of effectively responding to specifications or a frequency of an installed set, an output terminal of the oscillator 1 is connected to an input terminal of the inverter 2, an output terminal of which is connected to the first resistor 7 and one terminal of the second resistor 8, the other terminal of the first resistor 7 is connected to one terminal of the first capacitor 9 and an input terminal of the first transistor 3, the other terminal of the first capacitor 9 is connected to one terminal of the first switch 11, and the other terminal of the first switch 11 is grounded, the other terminal of the second resistor 8 is connected to one terminal of the second capacitor 10 and an input terminal of the second transistor 4, the other terminal of the second capacitor 10 is connected to one terminal of the second switch 12, and the other terminal of the second switch 12 is grounded, an output terminal of the first transisto
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: August 25, 2009
    Assignee: Panasonic Corporation
    Inventors: Motoki Sakai, Hisato Takeuchi, Keigo Shingu, Kei Nagatomo
  • Publication number: 20090108950
    Abstract: An oscillation control apparatus is provided with: an oscillating unit for oscillating an oscillating element; an output amplifying circuit having two pieces of same types of transistors series-connected to each other, for outputting a signal from a junction point between the two transistors in response to an oscillation signal outputted from the oscillating unit; a bias unit for generating two DC bias voltages having different levels from each other, which are applied to either respective gates or respective bases of the two transistors; a constant voltage power supply unit for applying a constant voltage to the oscillating unit; and an inverter unit provided between the oscillating unit and any one of either the gates or the bases of the two transistors, for inverting a phase of the oscillation signal outputted from the oscillating unit.
    Type: Application
    Filed: October 30, 2008
    Publication date: April 30, 2009
    Inventor: Hisato Takeuchi
  • Patent number: 7514158
    Abstract: A method for producing a coumarin compound represented by Formula 1, which comprises a step of reacting a coumarin compound represented by Formula 1 with a compound having an aldehyde group and an activated methylene group; luminous agents for organic EL elements and organic EL elements which all comprise the coumarin compound; and displaying panels and information displaying apparatuses using the organic EL elements: ø(Z)m??Formula 1 wherein in Formula 1, ø is an aromatic ring, heterocycle, or a combination thereof, each Z is the same or a different coumarin group represented by Formula 2; and m is an integer of two or more;
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: April 7, 2009
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Makoto Satsuki, Makoto Fujiwara, Natsuko Ishida, Sadaharu Suga, Hisayoshi Fujikawa, Hisato Takeuchi, Yasunori Taga
  • Publication number: 20090082563
    Abstract: A molecular assembly comprising a host metal complex with a space formed therein, and compounds having substituents enclosed in the metal complex within the space and molecular chains bonded to the substituents and extending to the exterior of the metal complex, wherein two or more substituents are enclosed in the same space of the metal complex.
    Type: Application
    Filed: September 25, 2008
    Publication date: March 26, 2009
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, THE UNIVERSITY OF TOKYO
    Inventors: Kazuhiko UMEMOTO, Hisato TAKEUCHI, Hiroshi NAKAMURA, Arimitsu USUKI, Makoto FUJITA
  • Patent number: 7492231
    Abstract: An oscillator starting control circuit capable of shortening a starting time and stably controlling the starting time, and furthermore, stabilizing an oscillating frequency after starting an oscillating circuit. An oscillating circuit (1) is a crystal oscillating circuit in which an input and an output of an inverter (14) are connected to both ends of a crystal oscillator (15) and both ends of a resistor (16), the input is connected to a drain of an MOS variable capacity (10), the output is connected to a drain of an MOS variable capacity (11), a source of the MOS variable capacity (10) is connected to a fixed capacity (12), a source of the MOS variable capacity (11) is connected to a fixed capacity (13), and the other ends of the fixed capacities (12, 13) are connected to a GND.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: February 17, 2009
    Assignee: Panasonic Corporation
    Inventors: Kei Nagatomo, Keigo Shingu, Hisato Takeuchi
  • Publication number: 20080258830
    Abstract: A temperature-compensated crystal oscillator includes a mode selector circuit 100, a control logic serial•interface 200, a PROM circuit 300, an oscillation control circuit 400 and an oscillation circuit 500, and has, as terminals, a power terminal (VCC/CLK) 11, an input terminal (VC/DATA/PE) 12, an output terminal (OUT) 13 and a ground terminal (GND) 14. The mode selector circuit 100 switches the crystal oscillator to an emulation mode when a first signal in which a power voltage and a clock signal supplied through the power terminal 11 are superimposed, is inputted from the power terminal and a second signal having a predetermined pattern is inputted from the input terminal 12.
    Type: Application
    Filed: April 18, 2008
    Publication date: October 23, 2008
    Inventors: Hisato Takeuchi, Keigo Shingu, Kei Nagatomo
  • Publication number: 20080238561
    Abstract: For a piezoelectric oscillator according to the present invention, an oscillator circuit includes: a piezoelectric vibrator; an NMOS transistor and a PMOS transistor that constitute an amplifier connected in parallel to the piezoelectric vibrator; and load capacitors connected in parallel to the piezoelectric vibrator. The gate terminals of the NMOS transistor and the PMOS transistor, which are constituents of the amplifier, are connected by a DC cut capacitor, and the gate terminal of the NMOS transistor and the output terminal of the amplifier are connected by a feedback resistor. An arbitrary bias voltage, to be applied to the gate terminal of the PMOS transistor via a high-frequency elimination resistor, is generated by a circuit provided by a diode-connected, second PMOS transistor.
    Type: Application
    Filed: March 28, 2008
    Publication date: October 2, 2008
    Inventors: Takashi Otsuka, Hisato Takeuchi
  • Patent number: 7414102
    Abstract: A polymer electrolyte of high durability consistent with the present invention is characterized as including a first repeating unit represented by a general formula —{C(Z1)(Z2)—C(Z3)(Z4—SO3H)}— (where Z1, Z2, Z3, and Z4 are respectively F or Rf1, F or Rf2, F or Rf3, and nothing or Rf4; and each of Rf1, to Rf4 is a perfluoroalkyl group in which the carbon number is from 1 to 10) in a polymer chain, and having an equivalent weight of 2500 g/eq or less.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: August 19, 2008
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Atsushi Kamiya, Naoki Hasegawa, Satoru Yamamoto, Hisato Takeuchi, Masaya Kawasumi
  • Patent number: 7369008
    Abstract: To provide a MOS varactor in which oscillation frequency variation is small and variation in a capacitance changing voltage is small, and a voltage-controlled oscillator using the MOS varactor, as a load capacitor of an oscillating circuit composed of a feedback resistor 1, an amplifier 2, and a crystal vibrator 3, a variable electrostatic capacitor, which is generated between drain/source terminals and a gate terminal of each of MOS transistors 5a and 6a each of which source and drain terminals are short-circuited, is connected. A bulk terminal of each of the MOS transistors 5a and 6a is connected to one terminal of a resistor 19, a voltage is applied to the other terminal of the resistor 19, the bulk terminal of each of the MOS transistors 5a and 6a is connected to one terminal of a capacitor 20, and the other terminal of the capacitor 20 is grounded.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: May 6, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shigeo Masai, Yuichi Tateyama, Takashi Otsuka, Hisato Takeuchi
  • Publication number: 20080007363
    Abstract: A first order function generation circuit receives a signal from a temperature sensor circuit, and generates a fist order function control signal V1 that is affected by the ambient temperature. A fourth order and fifth order approximation function generation circuit receives signals from the temperature sensor circuit and from the third order approximation function generation circuit, and generates a fourth and fifth order approximation function control signal V45 that is affected by the ambient temperature. A peak change point adjustment circuit outputs a signal to adjust the value of a peak change point temperature Ti for the third order approximation function generation circuit, the first order generation function circuit and the fourth order and fifth order approximation function generation circuit. A temperature compensation circuit adds together control signals V0, V1, V3 and V5, and outputs the resultant signal Vc.
    Type: Application
    Filed: May 31, 2007
    Publication date: January 10, 2008
    Inventors: Kei Nagatomo, Hisato Takeuchi, Keigo Shingu