Patents by Inventor Kiyoomi Kadoya

Kiyoomi Kadoya 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: 20180358798
    Abstract: There is provided a vehicle control device that allows high-speed diagnosis of a current breaker while assuring the accuracy of the current flowing to a load during the operation of the load. A smoothing capacitor (8) is connected in parallel to linear solenoid valves (13a and 13b). A current breaker (3a) and a reverse connection protector (4a) are connected in series from a battery (2) to a first connection point (P1) between the linear solenoid valves (13a and 13b) and the smoothing capacitor (8). A discharge unit (DU) is connected to a second connection point (P2) between the breaker (3a) and the reverse connection protector (4a) to discharge electric charge from the second connection point (P2).
    Type: Application
    Filed: October 26, 2016
    Publication date: December 13, 2018
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Kiyoomi KADOYA
  • Patent number: 9600047
    Abstract: Disclosed is an electronic control unit capable of identifying an abnormality in a power supply voltage without narrowing the operating voltage range, and having minimal effects on cost and the circuit mounting surface area. The ECU includes a microcomputer containing an input terminal VCCin and an input terminal Vrin, a power supply IC that supplies a power supply voltage VCC to the input terminal VCCin, and as a reference-voltage-generator circuit a voltage-divider resistor and a voltage-divider resistor configuring a voltage-dividing circuit that outputs a sub-divided voltage Vc is sub-divided from the power supply voltage VCC, a capacitor coupled at one end to the input terminal Vrin and coupled on at the other end to ground, and a voltage isolation element coupled between the voltage-dividing circuit and the input terminal Vrin.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: March 21, 2017
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yasushi Sugiyama, Takuya Mayuzumi, Ryosuke Ishida, Yasuhiko Okada, Kiyoomi Kadoya, Kenichi Hoshino
  • Patent number: 9126495
    Abstract: A reverse polarity protection circuit includes a p-channel MOSFET, an n-channel MOSFET, zener diodes, a coil that suppresses a backward flow of an electric current, a resistor that retains a voltage difference between a source of the p-channel MOSFET and a drain of the n-channel MOSFET, a resistor that protects the circuit if short-circuit destruction of the p-channel MOSFET occurs, a resistor that protects the circuit if short-circuit destruction of the n-channel MOSFET occurs, an electrolytic capacitor that suppresses fluctuation in an input voltage to a power supply control IC, a battery that supplies a voltage to an ECU, and the power supply control IC that generates a voltage for causing an IC in the ECU to operate.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: September 8, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yasushi Sugiyama, Takuya Mayuzumi, Yasuhiko Okada, Kiyoomi Kadoya
  • Publication number: 20150039913
    Abstract: Disclosed is an electronic control unit capable of identifying an abnormality in a power supply voltage without narrowing the operating voltage range, and having minimal effects on cost and the circuit mounting surface area. The ECU includes a microcomputer containing an input terminal VCCin and an input terminal Vrin, a power supply IC that supplies a power supply voltage VCC to the input terminal VCCin, and as a reference-voltage-generator circuit a voltage-divider resistor and a voltage-divider resistor configuring a voltage-dividing circuit that outputs a sub-divided voltage Vc is sub-divided from the power supply voltage VCC, a capacitor coupled at one end to the input terminal Vrin and coupled on at the other end to ground, and a voltage isolation element coupled between the voltage-dividing circuit and the input terminal Vrin.
    Type: Application
    Filed: February 1, 2013
    Publication date: February 5, 2015
    Inventors: Yasushi Sugiyama, Takuya Mayuzumi, Ryosuke Ishida, Yasuhiko Okada, Kiyoomi Kadoya, Kenichi Hoshino
  • Publication number: 20150029682
    Abstract: Proposed is a C/U that is designed to accomplish the above object. The CU includes a multilayer circuit substrate, a resin cover, and a metal base. Electronic parts are mounted on both surfaces of the multilayer circuit substrate which is covered with the resin cover and the metal base. The multilayer circuit substrate 8 includes a signal pattern, a GND pattern, an important signal pattern, and a multilayer circuit substrate insulating layer. The GND pattern is electrically connected to the metal base through a screw. The GND pattern is disposed on the side of the resin cover in order to shield the important signal pattern against electromagnetic waves penetrating the resin cover to enter a housing and electromagnetic waves incident from the metal base side. The important signal pattern is disposed so that it is covered with the GND pattern and the metal case.
    Type: Application
    Filed: February 8, 2013
    Publication date: January 29, 2015
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Kiyoomi Kadoya, Ryosuke Ishida, Takuya Mayuzumi, Kenichi Hoshino, Yasuhiko Okada, Yasushi Sugiyama
  • Publication number: 20130193754
    Abstract: A reverse polarity protection circuit includes a p-channel MOSFET, an n-channel MOSFET, zener diodes, a coil that suppresses a backward flow of an electric current, a resistor that retains a voltage difference between a source of the p-channel MOSFET and a drain of the n-channel MOSFET, a resistor that protects the circuit if short-circuit destruction of the p-channel MOSFET occurs, a resistor that protects the circuit if short-circuit destruction of the n-channel MOSFET occurs, an electrolytic capacitor that suppresses fluctuation in an input voltage to a power supply control IC, a battery that supplies a voltage to an ECU, and the power supply control IC that generates a voltage for causing an IC in the ECU to operate.
    Type: Application
    Filed: August 1, 2012
    Publication date: August 1, 2013
    Inventors: Yasushi SUGIYAMA, Takuya MAYUZUMI, Yasuhiko OKADA, Kiyoomi KADOYA
  • Patent number: 7934312
    Abstract: An electronic circuit device comprises: a printed circuit board mounted with electronic components; a resin-molded portion formed of resin so disposed that the electronic components are covered therewith; a convex connector that has metal terminals for connection and is exposed from the resin-molded portion; and a sealing member wrapped around the resin-molded portion.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: May 3, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Takuya Mayuzumi, Masahiro Sasaki, Kiyoomi Kadoya
  • Patent number: 7924572
    Abstract: A module comprises a metallic terminal pins for connection and a circuit board with electronic components mounted thereon, a circuit board connecting side of the connector. The electronic components and the circuit board with the electronic components mounted thereon are encapsulated with the same resin. A metallic base is united to the module to obtain an electric conduction between the metallic base and the circuit board.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: April 12, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Takuya Mayuzumi, Shuji Eguchi, Masahiro Sasaki, Kiyoomi Kadoya
  • Publication number: 20090119913
    Abstract: An electronic circuit device comprises: a printed circuit board mounted with electronic components; a resin-molded portion formed of resin so disposed that the electronic components are covered therewith; a convex connector that has metal terminals for connection and is exposed from the resin-molded portion; and a sealing member wrapped around the resin-molded portion.
    Type: Application
    Filed: January 9, 2009
    Publication date: May 14, 2009
    Applicant: HITACHI, LTD.
    Inventors: Takuya Mayuzumi, Masahiro Sasaki, Kiyoomi Kadoya
  • Patent number: 7514784
    Abstract: An electronic circuit device comprises: a printed circuit board mounted with electronic components; a resin-molded portion formed of resin so disposed that the electronic components are covered therewith; a convex connector that has metal terminals for connection and is exposed from the resin-molded portion; and a sealing member wrapped around the resin-molded portion.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: April 7, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Takuya Mayuzumi, Masahiro Sasaki, Kiyoomi Kadoya
  • Patent number: 7417873
    Abstract: In resin-molded engine control unit, a coil, an electrolytic capacitor, a microprocessor, electronic parts and a connector terminal are mounted on a board. Inside a cover fixed on the board, a resin-free region is formed. The coil, the electrolytic capacitor and the microprocessor, which should not be sealed with resin, are mounted in the resin-free region, while the board and the electronic parts which are not capped by the cover are sealed with a resin.
    Type: Grant
    Filed: January 3, 2006
    Date of Patent: August 26, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Kiyoomi Kadoya, Masahiro Sasaki, Takuya Mayuzumi
  • Publication number: 20080165511
    Abstract: A module comprises a metallic terminal pins for connection and a circuit board with electronic components mounted thereon, a circuit board connecting side of the connector. The electronic components and the circuit board with the electronic components mounted thereon are encapsulated with the same resin. A metallic base is united to the module to obtain an electric conduction between the metallic base and the circuit board.
    Type: Application
    Filed: February 28, 2008
    Publication date: July 10, 2008
    Applicant: Hitachi, Ltd.
    Inventors: Takuya Mayuzumi, Shuji Eguchi, Masahiro Sasaki, Kiyoomi Kadoya
  • Patent number: 7359212
    Abstract: A module comprises a metallic terminal pins for connection and a circuit board with electronic components mounted thereon, a circuit board connecting side of the connector. The electronic components and the circuit board with the electronic components mounted thereon are encapsulated with the same resin. A metallic base is united to the module to obtain an electric conduction between the metallic base and the circuit board.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: April 15, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Takuya Mayuzumi, Shuji Eguchi, Masahiro Sasaki, Kiyoomi Kadoya
  • Publication number: 20060171127
    Abstract: In resin-molded engine control unit, a coil, an electrolytic capacitor, a microprocessor, electronic parts and a connector terminal are mounted on a board. Inside a cover fixed on the board, a resin-free region is formed. The coil, the electrolytic capacitor and the microprocessor, which should not be sealed with resin, are mounted in the resin-free region, while the board and the electronic parts which are not capped by the cover are sealed with a resin.
    Type: Application
    Filed: January 3, 2006
    Publication date: August 3, 2006
    Applicant: Hitachi, Ltd.
    Inventors: Kiyoomi Kadoya, Masahiro Sasaki, Takuya Mayuzumi
  • Publication number: 20060134937
    Abstract: An electronic circuit device comprises: a printed circuit board mounted with electronic components; a resin-molded portion formed of resin so disposed that the electronic components are covered therewith; a convex connector that has metal terminals for connection and is exposed from the resin-molded portion; and a sealing member wrapped around the resin-molded portion.
    Type: Application
    Filed: August 9, 2005
    Publication date: June 22, 2006
    Applicant: Hitachi, Ltd.
    Inventors: Takuya Mayuzumi, Masahiro Sasaki, Kiyoomi Kadoya
  • Publication number: 20060077643
    Abstract: A module comprises a metallic terminal pins for connection and a circuit board with electronic components mounted thereon, a circuit board connecting side of the connector. The electronic components and the circuit board with the electronic components mounted thereon are encapsulated with the same resin. A metallic base is united to the module to obtain an electric conduction between the metallic base and the circuit board.
    Type: Application
    Filed: October 5, 2005
    Publication date: April 13, 2006
    Applicant: Hitachi, Ltd.
    Inventors: Takuya Mayuzumi, Shuji Eguchi, Masahiro Sasaki, Kiyoomi Kadoya
  • Publication number: 20060012034
    Abstract: An engine control circuit device which has higher heat resistance and can be installed in a place exposed to severe thermal environments. In an engine control circuit device comprising a circuit board on which a plurality of packaged electronic parts are mounted, and a connector mounted on the circuit board for connection to an external circuit, the device further comprises a resin portion formed of a thermo-setting resin and covering the connector except for a connecting portion thereof and the circuit board, and a cooling pipe integrally molded in the resin portion and allowing a coolant to flow through it, thereby cooling the resin portion.
    Type: Application
    Filed: July 12, 2005
    Publication date: January 19, 2006
    Applicant: Hitachi, Ltd.
    Inventors: Kiyoomi Kadoya, Shuuji Eguchi, Masahiro Sasaki, Takuya Mayuzumi