Patents by Inventor Yoichi Takano

Yoichi Takano 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: 20210034088
    Abstract: A power control semiconductor device includes a voltage control transistor, a control circuit, a bias circuit, and external terminals. The voltage control transistor is connected between a voltage input terminal and an output terminal. The bias circuit generates a voltage that operates the control circuit. Output control signals provided from an outside are input to the external terminals to control an output voltage. The control circuit includes an error amplifier and a logic circuit. The error amplifier outputs a voltage corresponding to a potential difference between a reference voltage and a voltage divided by a voltage divider that divides the output voltage. The logic circuit generates: a signal that changes the divided voltage in accordance with the output control signals; and a signal that stops operation of the bias circuit in response to a combination of the output control signals.
    Type: Application
    Filed: July 2, 2020
    Publication date: February 4, 2021
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Yoichi TAKANO, Shinichiro MAKI, Katsuhiro YOKOYAMA
  • Publication number: 20210018947
    Abstract: A power supply control apparatus includes a voltage control transistor connected between a DC voltage input terminal and an output terminal; a control circuit controlling the voltage control transistor according to an output feedback voltage; and a first external terminal receiving an output control signal to control an output voltage. The control circuit includes a first error amplifier outputting a voltage according to an electric potential difference between a voltage divided by a first voltage dividing circuit which divides the output voltage of the output terminal and a predetermined reference voltage; and an output changing circuit including a second error amplifier receiving a voltage input in the first external terminal, a transistor having a control terminal receiving the output of the second error amplifier, and a current mirror circuit connected to the voltage input terminal which transfers an electric current flowing in the transistor.
    Type: Application
    Filed: October 1, 2020
    Publication date: January 21, 2021
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Shinichiro MAKI, Yoichi TAKANO, Katsuhiro YOKOYAMA
  • Publication number: 20210018946
    Abstract: A power supply control apparatus includes a voltage control transistor connected between a DC voltage input terminal and an output terminal; a control circuit which controls the voltage control transistor according to an output feedback voltage; and a first external terminal receiving an output control signal to control an output voltage. The control circuit includes a first error amplifier outputting a voltage according to an electric potential difference between a voltage divided by a first voltage dividing circuit which divides the output voltage of the output terminal and a predetermined reference voltage; and an output changing circuit including a second error amplifier receiving a voltage input in the first external terminal, a transistor having a control terminal receiving the output of the second error amplifier, and a current mirror circuit connected to the voltage input terminal which transfers an electric current flowing in the transistor.
    Type: Application
    Filed: October 1, 2020
    Publication date: January 21, 2021
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Shinichiro MAKI, Yoichi TAKANO, Katsuhiro YOKOYAMA
  • Patent number: 10886838
    Abstract: Disclosed is a semiconductor integrated circuit for discharging, which includes: a plurality of discharging elements; a plurality of external terminals connected respectively to first terminals of the plurality of discharging elements; and a controlling external terminal which is capable of receiving from an outside a signal indicating that an operation of an internal circuit is enabled/disabled. In response to the signal received at the controlling external terminal or an output signal of a logic circuit that receives the signal being applied to controlling terminals of the plurality of discharging elements, the discharging semiconductor integrated circuit turns on the plurality of discharging elements to draw charges respectively through the plurality of external terminals.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: January 5, 2021
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Chuhei Terada, Yoichi Takano
  • Patent number: 10869390
    Abstract: A resin composition comprising a thermosetting resin, a functional group-modified copolymer, and an inorganic filler, wherein the functional group-modified copolymer has two or more alkyl (meth)acrylate units, or one or two or more alkyl (meth)acrylate units and an acrylonitrile unit, and at least a part of alkyl ester groups of the alkyl (meth)acrylate units and/or a cyano group of the acrylonitrile unit are/is modified with at least one selected from the group consisting of an epoxy group, a carboxyl group, and an amide group.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: December 15, 2020
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Nobuyoshi Ohnishi, Yoichi Takano, Tomo Chiba, Meguru Ito, Eisuke Shiga
  • Publication number: 20200371538
    Abstract: A power control semiconductor device includes: a voltage control transistor connected between an input terminal and an output terminal; a control circuit that controls the voltage control transistor in accordance with a voltage of the output terminal; and an external terminal that controls an output voltage externally. The control circuit includes: a first divider which has resistor elements connected in series to the output terminal and which divides the output voltage of the output terminal; a first error amplifier that outputs a voltage corresponding to a potential difference between a predetermined reference voltage and a voltage divided by the first divider; and an output voltage change circuit that changes the divided voltage in accordance with a voltage input to the external terminal to change the output voltage in accordance with the voltage of the external terminal.
    Type: Application
    Filed: April 29, 2020
    Publication date: November 26, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Shinichiro MAKI, Yoichi TAKANO, Katsuhiro YOKOYAMA
  • Patent number: 10831222
    Abstract: A semiconductor apparatus for power supply control includes the following. A voltage control transistor is connected between a voltage input terminal and an output terminal. A control circuit controls the voltage control transistor according to an output feedback voltage. A first external terminal is supplied with an output control signal to control output voltage is input. The control circuit further includes the following. A first error amplifier outputs a voltage according to an electric potential difference between a voltage divided by a first voltage dividing circuit which divides the output voltage of the output terminal and a predetermined reference voltage. An output changing circuit displaces the reference voltage input in the first error amplifier or the voltage divided by the first voltage dividing circuit according to a voltage input in the first external terminal to change the output voltage to a voltage according to the output control signal.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: November 10, 2020
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Shinichiro Maki, Yoichi Takano, Katsuhiro Yokoyama
  • Patent number: 10721817
    Abstract: The resin composition of the present invention comprises a prepolymer (P) and a thermosetting component, the prepolymer (P) being obtained by polymerizing an alkenyl-substituted nadimide (A), a maleimide compound (B), and an amino-modified silicone (C).
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: July 21, 2020
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yoichi Takano, Nobuyoshi Ohnishi, Hiroshi Takahashi, Eisuke Shiga
  • Patent number: 10703874
    Abstract: The resin composition of the present invention comprises an alkenyl-substituted nadimide (A), a maleimide compound (B), and an amino-modified silicone (C).
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: July 7, 2020
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yoichi Takano, Nobuyoshi Ohnishi, Katsuya Tomizawa, Naoki Kashima, Hiroshi Takahashi, Eisuke Shiga
  • Patent number: 10676579
    Abstract: It is intended to provide a resin composition that serves as a raw material for a printed circuit board excellent in heat resistance after moisture absorption and is excellent in moldability. The resin composition of the present invention contains a maleimide compound, a silane compound having a carbon-carbon unsaturated bond and a hydrolyzable group or a hydroxy group, a silane compound having an epoxy skeleton and a hydrolyzable group or a hydroxy group, and an inorganic filler.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: June 9, 2020
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Katsuya Tomizawa, Yoichi Takano, Meguru Ito, Eisuke Shiga
  • Publication number: 20200152349
    Abstract: A resin composition that includes a maleimide compound, an alkenyl-substituted nadimide, a silane compound having a styrene skeleton and a hydrolyzable group or a hydroxy group, and an inorganic filler.
    Type: Application
    Filed: January 16, 2020
    Publication date: May 14, 2020
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Katsuya TOMIZAWA, Yoichi TAKANO, Meguru ITO, Eisuke SHIGA
  • Patent number: 10563029
    Abstract: A resin composition containing a compound represented by the following general formula (a) or the following general formula (b), an alkenyl-substituted nadimide compound, and a maleimide compound: wherein Ra represents a group represented by the following general formula (c),
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: February 18, 2020
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yoichi Takano, Katsuya Tomizawa, Takashi Kubo, Tomo Chiba, Eisuke Shiga
  • Publication number: 20190393773
    Abstract: Disclosed is a semiconductor integrated circuit for discharging, which includes: a plurality of discharging elements; a plurality of external terminals connected respectively to first terminals of the plurality of discharging elements; and a controlling external terminal which is capable of receiving from an outside a signal indicating that an operation of an internal circuit is enabled/disabled. In response to the signal received at the controlling external terminal or an output signal of a logic circuit that receives the signal being applied to controlling terminals of the plurality of discharging elements, the discharging semiconductor integrated circuit turns on the plurality of discharging elements to draw charges respectively through the plurality of external terminals.
    Type: Application
    Filed: June 14, 2019
    Publication date: December 26, 2019
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Chuhei TERADA, Yoichi TAKANO
  • Patent number: 10466728
    Abstract: A semiconductor integrated circuit for a regulator includes an output controlling transistor, a controller circuit, a breeder resister and a current limiting resistor. The output controlling transistor is connected between an output terminal and a voltage input terminal. The breeder resister is connected between the output terminal and a constant potential point and generates the feedback voltage. The current limiting resistor is connected with the breeder resistor between the output terminal and the constant potential point.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: November 5, 2019
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Shinichiro Maki, Yoichi Takano, Katsuhiro Yokoyama
  • Publication number: 20190302821
    Abstract: A semiconductor apparatus for power supply control includes the following. A voltage control transistor is connected between a voltage input terminal and an output terminal. A control circuit controls the voltage control transistor according to an output feedback voltage. A first external terminal is supplied with an output control signal to control output voltage is input. The control circuit further includes the following. A first error amplifier outputs a voltage according to an electric potential difference between a voltage divided by a first voltage dividing circuit which divides the output voltage of the output terminal and a predetermined reference voltage. An output changing circuit displaces the reference voltage input in the first error amplifier or the voltage divided by the first voltage dividing circuit according to a voltage input in the first external terminal to change the output voltage to a voltage according to the output control signal.
    Type: Application
    Filed: March 13, 2019
    Publication date: October 3, 2019
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Shinichiro MAKI, Yoichi TAKANO, Katsuhiro YOKOYAMA
  • Patent number: 10296034
    Abstract: A negative power supply control circuit which controls a negative voltage regulator circuit based on a positive voltage control signal, the negative power supply control circuit including: a control signal input terminal a negative voltage input terminal; a negative voltage input control signal output terminal; a voltage current conversation circuit; a first current source; and a first clamp circuit, wherein the first clamp circuit clamps a voltage at a first intermediate point between the first clamp circuit and the first current source by limiting a current flowing in the first clamp circuit according to the voltage at the first intermediate point in a period when a current flows in the voltage current conversation circuit, and the negative voltage controls signal is generated based on a voltage or a current in a current path through the voltage current conversation circuit, the first clamp circuit and the first current source.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: May 21, 2019
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Kohei Sakurai, Yoichi Takano
  • Publication number: 20190146535
    Abstract: A semiconductor integrated circuit for a regulator includes an output controlling transistor, a controller circuit, a breeder resister and a current limiting resistor. The output controlling transistor is connected between an output terminal and a voltage input terminal. The breeder resister is connected between the output terminal and a constant potential point and generates the feedback voltage. The current limiting resistor is connected with the breeder resistor between the output terminal and the constant potential point.
    Type: Application
    Filed: November 9, 2018
    Publication date: May 16, 2019
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Shinichiro MAKI, Yoichi TAKANO, Katsuhiro YOKOYAMA
  • Publication number: 20190004558
    Abstract: A negative power supply control circuit which controls a negative voltage regulator circuit based on a positive voltage control signal, the negative power supply control circuit including: a control signal input terminal; a negative voltage input terminal; a negative voltage control signal output terminal; a voltage current conversion circuit; a first current source; and a first clamp circuit, wherein the first clamp circuit clamps a voltage at a first intermediate point between the first clamp circuit and the first current source by limiting a current flowing in the first clamp circuit according to the voltage at the first intermediate point in a period when a current flows in the voltage current conversion circuit, and the negative voltage control signal is generated based on a voltage or a current in a current path through the voltage current conversion circuit, the first clamp circuit and the first current source.
    Type: Application
    Filed: June 27, 2018
    Publication date: January 3, 2019
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Kohei SAKURAI, Yoichi TAKANO
  • Patent number: 10063135
    Abstract: A semiconductor integrated circuit for a regulator includes an opening error detecting circuit detecting an opened state of an output terminal; a short-circuiting error detecting circuit detecting a short-circuiting state thereof; a first output terminal outputting a result detected by the opening error detecting circuit to an external unit; a second output terminal outputting a result detected by the short-circuiting error detecting circuit thereto; and a thermal shutdown circuit detecting the temperature of a semiconductor substrate and turns off the voltage control transistor if the detected temperature of the semiconductor substrate exceeds a predetermined temperature. A signal indicating the logic sum of an output signal of the thermal shutdown circuit and that of the short-circuiting error detecting circuit is outputted from the second output terminal such that the output signal of the opening error detecting circuit is not blocked based on the output signal of the thermal shutdown circuit.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: August 28, 2018
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Shinichiro Maki, Yoichi Takano, Katsuhiro Yokoyama
  • Publication number: 20180197655
    Abstract: It is intended to provide a resin composition that serves as a raw material for a printed circuit board excellent in chemical resistance, desmear resistance, and insulation reliability. The resin composition of the present invention contains a maleimide compound, a silane compound having a styrene skeleton and a hydrolyzable group or a hydroxy group, and an inorganic filler.
    Type: Application
    Filed: July 4, 2016
    Publication date: July 12, 2018
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Katsuya TOMIZAWA, Yoichi TAKANO, Meguru ITO, Eisuke SHIGA