Patents by Inventor Masanori Nakagawa

Masanori Nakagawa 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: 10996127
    Abstract: A pressure detection device includes: a piezoelectric element that detects a pressure change via a diaphragm head or the like; a circuit board that is provided with a processing circuit that performs electrical processing with respect to a charge signal outputted from the piezoelectric element; a conductive housing member, which has conductivity and is disposed to cover (house) the circuit board, and which is connected to the ground of the circuit board; and a housing (a leading end side housing, the diaphragm head and a rear end side housing), which houses the piezoelectric element, the circuit board and the housing member, and which is electrically insulated from the piezoelectric element, the circuit board and the housing member.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: May 4, 2021
    Assignees: CITIZEN FINEDEVICE CO., LTD., CITIZEN WATCH CO., LTD.
    Inventors: Yuta Kanamori, Masanori Yomoyama, Tetsuya Aiba, Ikuo Takahashi, Hiroshi Nakagawa, Kazuo Takahashi, Yusuke Satoh
  • Publication number: 20210103209
    Abstract: A substrate with a conductive film for manufacturing a reflective mask which has a rear-surface conductive film with high mechanical strength and is capable of correcting positional deviation of the reflective mask from the rear surface side by a laser beam or the like. A substrate with a conductive film has a conductive film formed on one surface of a main surface of a mask blank substrate used for lithography, wherein the conductive film includes a transparent conductive layer provided on a substrate side and an upper layer provided on the transparent conductive layer, the conductive film has a transmittance of 10% or more for light of wavelength 532 nm, the upper layer is made of a material including tantalum (Ta) and boron (B), and the upper layer has a film thickness of 0.5 nm or more and less than 10 nm.
    Type: Application
    Filed: December 21, 2018
    Publication date: April 8, 2021
    Applicant: HOYA CORPORATION
    Inventors: Masanori NAKAGAWA, Tsutomu SHOKI
  • Publication number: 20200375504
    Abstract: An information processing apparatus includes a processor, in communication with a memory, executing a process including acquiring identification information of a wireless device and information for identifying a position of the wireless device; storing a learned model generated by performing machine learning by using a training dataset including a position of a person to which the wireless device is attached and a movement destination of the person to which the wireless device is attached; inferring the movement destination of the person to which the wireless device is attached from the position of the wireless device, based on the learned model; and reporting the inferred movement destination.
    Type: Application
    Filed: June 2, 2020
    Publication date: December 3, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Ryu TANIGUCHI, Masanori NAKAGAWA
  • Publication number: 20200331039
    Abstract: The present invention provides a cleaning method and a cleaning apparatus capable of omitting cleaning of a target portion that does not need to be cleaned.
    Type: Application
    Filed: December 19, 2019
    Publication date: October 22, 2020
    Inventors: Masanori NAKAGAWA, Don REEDER
  • Publication number: 20200310244
    Abstract: The substrate with a multilayer reflective film includes a substrate and the multilayer reflective film configured to reflect exposure light, the multilayer reflective film comprising a stack of alternating layers on a substrate, the alternating layers including a low refractive index layer and a high refractive index layer, in which the multilayer reflective film contains molybdenum (Mo) and at least one additive element selected from nitrogen (N), boron (B), carbon (C), zirconium (Zr), oxygen (O), hydrogen (H) and deuterium (D), and the crystallite size of the multilayer reflective film calculated from a diffraction peak of Mo (110) by X-ray diffraction is 2.5 nm or less.
    Type: Application
    Filed: March 25, 2020
    Publication date: October 1, 2020
    Applicant: HOYA CORPORATION
    Inventors: Masanori NAKAGAWA, Hirofumi KOZAKAI
  • Patent number: 10263554
    Abstract: A power supply device for an internal combustion engine, using a generator driven by an internal combustion engine as a power source and supplying power to a first load that needs to be constantly driven to cause the internal combustion engine to operate and a second load that is permitted not to drive during startup of the engine, wherein a first generation coil for driving the first load and a second generation coil for driving the second load are provided to be magnetically-coupled tightly in the generator, and voltage supplied to a load is boosted to a higher voltage value than conventionally achieved by performing chopper control of an energizing current of the first generation coil and an energizing current of the second generation coil while preventing energization from the second generation coil to a load.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: April 16, 2019
    Assignee: MAHLE ELECTRIC DRIVES JAPAN CORPORATION
    Inventor: Masanori Nakagawa
  • Publication number: 20180205336
    Abstract: A power supply device for an internal combustion engine, using a generator driven by an internal combustion engine as a power source and supplying power to a first load that needs to be constantly driven to cause the internal combustion engine to operate and a second load that is permitted not to drive during startup of the engine, wherein a first generation coil for driving the first load and a second generation coil for driving the second load are provided to be magnetically-coupled tightly in the generator, and voltage supplied to a load is boosted to a higher voltage value than conventionally achieved by performing chopper control of an energizing current of the first generation coil and an energizing current of the second generation coil while preventing energization from the second generation coil to a load.
    Type: Application
    Filed: July 17, 2015
    Publication date: July 19, 2018
    Inventor: MASANORI NAKAGAWA
  • Publication number: 20130054070
    Abstract: An electric working vehicle, including a motor, to supply a driving force to at least one wheel of plural wheels; a rotary-type blade attached on part of the vehicle body; a blade motor; a battery to supply electric power to the running and blade motor; a first power converter to convert the electric power from the battery for the running motor; a second power converter to convert the electric power from the battery for the blade motor; and a controller portion to control at least power conversion operations of the first and second converter, wherein as least, the first power converter is able to operate regeneration, and the controller portion controls the second power converter in such a manner that regeneration electric power when the first power converter operates under condition of the regeneration is supplied to the blade motor, depending on a charging condition of the battery.
    Type: Application
    Filed: August 28, 2012
    Publication date: February 28, 2013
    Inventor: Masanori NAKAGAWA
  • Patent number: 8027180
    Abstract: A power generating apparatus including an AC generator that supplies electric power to a load including a voltage accumulating means, an inverter that applies AC control voltage to armature winding of the generator from the voltage accumulating means, and a controller that controls a phase of control voltage applied to the armature winding by the inverter to keep load voltage at a target value, wherein the phase of the control voltage is controlled so as to advance when the load voltage is higher than the target value, hold the present phase when the load voltage is equal to the target value, advance when the load voltage is lower than the target value and a phase of phase voltage of the generator is delayed behind a phase of a phase current of the same phase, and delay when the load voltage is lower than the target value and the phase of the phase voltage of the generator is advanced ahead of a phase of a phase current of the same phase.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: September 27, 2011
    Assignee: Kokusan Denki Co., Ltd.
    Inventor: Masanori Nakagawa
  • Patent number: 7683587
    Abstract: A generation device, having a magneto generator, in which an AC control voltage is applied from a battery charged with a rectified output of the magneto generator to an armature winding of the generator through an inverter to control a battery voltage to a limit value or less, comprising: fixed point detection means for detecting a fixed point on a waveform of a phase current of the generator; phase current phase detection means for detecting a phase angle of the fixed point in relation to a reference phase; arithmetical operation means for arithmetically operating timing for generating the AC control voltage with reference to the phase of the fixed point; and inverter control means for controlling switch elements of the inverter so as to generate the AC control voltage at the timing arithmetically operated by the arithmetical operation means.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: March 23, 2010
    Assignee: Kokusan Denki Co., Ltd.
    Inventors: Yutaka Inaba, Masanori Nakagawa
  • Publication number: 20100052460
    Abstract: In a permanent magnet type electrical rotating machine having coils 12 with a deviated electrical angle phase at their magnetic pole positions, a relation of T2>T1 is satisfied where T1 is the number of turns of each of the coils and T2 is the number of turns of each of other coils, or alternatively a relation of R2<R1 is satisfied where R1 is a magnetic resistance of a tooth around which each of the coils is wound and R2 is a magnetic resistance of a tooth around which each of other coils is wound.
    Type: Application
    Filed: August 17, 2009
    Publication date: March 4, 2010
    Inventors: Hidetoshi Koka, Hiroshi Kanazawa, Susumu Terumoto, Masanori Nakagawa
  • Patent number: 7638917
    Abstract: An electrical rotating machine with permanent magnets which is configured such that the ratio of the number of magnetic poles of permanent magnets 3 to the number of magnetic poles of coils 12 is at 10:9 or 8:9. The coils 12 are configured such that a middle coil U? and two adjacent coils U+, U+ on both sides thereof are in-phase connected to be in-phase coils for each phase, and there is satisfied the relationship that T2>T1 and T2>T3, where T2 is the turn number of the middle coil U?, and T1 and T3 are the turn numbers of the adjacent coils U+, U+.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: December 29, 2009
    Assignee: Kokusan Denki Co., Ltd.
    Inventors: Hidetoshi Koka, Hiroshi Kanazawa, Susumu Terumoto, Masanori Nakagawa
  • Publication number: 20090102437
    Abstract: A power generating apparatus including an AC generator that supplies electric power to a load including a voltage accumulating means, an inverter that applies AC control voltage to armature winding of the generator from the voltage accumulating means, and a controller that controls a phase of control voltage applied to the armature winding by the inverter to keep load voltage at a target value, wherein the phase of the control voltage is controlled so as to advance when the load voltage is higher than the target value, hold the present phase when the load voltage is equal to the target value, advance when the load voltage is lower than the target value and a phase of phase voltage of the generator is delayed behind a phase of a phase current of the same phase, and delay when the load voltage is lower than the target value and the phase of the phase voltage of the generator is advanced ahead of a phase of a phase current of the same phase.
    Type: Application
    Filed: October 17, 2008
    Publication date: April 23, 2009
    Applicant: KOKUSAN DENKI CO., LTD
    Inventor: Masanori Nakagawa
  • Publication number: 20080211338
    Abstract: An electrical rotating machine with permanent magnets which is configured such that the ratio of the number of magnetic poles of permanent magnets 3 to the number of magnetic poles of coils 12 is at 10:9 or 8:9. The coils 12 are configured such that a middle coil U? and two adjacent coils U+, U+ on both sides thereof are in-phase connected to be in-phase coils for each phase, and there is satisfied the relationship that T2>T1 and T2>T3, where T2 is the turn number of the middle coil U?, and T1 and T3 are the turn numbers of the adjacent coils U+, U+.
    Type: Application
    Filed: February 27, 2008
    Publication date: September 4, 2008
    Inventors: Hidetoshi KOKA, Hiroshi Kanazawa, Susumu Terumoto, Masanori Nakagawa
  • Publication number: 20080195238
    Abstract: A game apparatus includes a CPU, and the CPU executes a questionnaire application. In the game apparatus, a player object utilized in the application is registered, and each player object makes an answer to a questionnaire. Information of the questionnaire answered by the player object is managed by corresponding player data.
    Type: Application
    Filed: August 1, 2007
    Publication date: August 14, 2008
    Applicant: Nintendo Co., Ltd.
    Inventors: Ryutaro Takahashi, Takafumi Masaoka, Masanori Nakagawa
  • Publication number: 20080067981
    Abstract: A generation device, having a magneto generator, in which an AC control voltage is applied from a battery charged with a rectified output of the magneto generator to an armature winding of the generator through an inverter to control a battery voltage to a limit value or less, comprising: fixed point detection means for detecting a fixed point on a waveform of a phase current of the generator; phase current phase detection means for detecting a phase angle of the fixed point in relation to a reference phase; arithmetical operation means for arithmetically operating timing for generating the AC control voltage with reference to the phase of the fixed point; and inverter control means for controlling switch elements of the inverter so as to generate the AC control voltage at the timing arithmetically operated by the arithmetical operation means.
    Type: Application
    Filed: August 29, 2007
    Publication date: March 20, 2008
    Applicant: Kokusan Denki Co., Ltd.
    Inventors: Yutaka Inaba, Masanori Nakagawa
  • Patent number: 7301247
    Abstract: A power supply device incorporated in a vehicle driven by an internal combustion engine including: a first power supply system for driving a vehicle load that converts an output of a generation coil provided in a generator driven by an internal combustion engine into a DC output to supply the DC output to an electrical load or electrical loads in the vehicle; and a second power supply system for driving an external load that converts an output of another generation coil provided in the generator into a DC output, then converts the DC output into an AC output at a commercial frequency with an inverter, and supplies the AC output to an external load, wherein the inverter is operated as a DC-DC converter to supply assisting power from the inverter through a switch to the first power supply system, when the output of the first power supply system is insufficient.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: November 27, 2007
    Inventors: Kazuyoshi Kishibata, Masanori Nakagawa, Tooru Notsu
  • Patent number: 7256507
    Abstract: An inverter controlled generator set including: a power supply unit that uses a generator driven by an engine as a power supply to output a DC voltage; an inverter device that converts the output voltage of the power supply unit into an AC voltage; and a rotational speed control unit that controls a rotational speed of the engine so as to be kept at a target rotational speed suitable for a load applied to the inverter device, wherein the rotational speed control unit is comprised so that a settling time when the rotational speed of the engine is caused to converge to the target rotational speed in a state where the load is above a set value is longer than a settling time when the rotational speed is caused to converge to the target rotational speed in a state where the load is below the set value, in order to minimize an operation sound of the engine when the load is intermittently driven.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: August 14, 2007
    Assignee: Kokusan Denki Co., Ltd.
    Inventors: Masahiko Endou, Masanori Nakagawa, Kaoru Shinba, Katsumi Yamamoto, Yoshihiro Sugisawa
  • Patent number: 7245036
    Abstract: An inverter controlled generator set including: a power supply unit that uses a generator driven by an engine as a power supply to output a DC voltage; an inverter device that converts the output voltage of the power supply unit into an AC voltage; and a rotational speed control unit that controls a rotational speed of the engine so as to be kept at a target rotational speed suitable for a load applied to the inverter device, wherein the rotational speed control unit is comprised so that a settling time when the rotational speed of the engine is caused to converge to the target rotational speed in a state where the load is above a set value is longer than a settling time when the rotational speed is caused to converge to the target rotational speed in a state where the load is below the set value, in order to minimize an operation sound of the engine when the load is intermittently driven.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: July 17, 2007
    Assignee: Kokusan Denki Co., Ltd.
    Inventors: Masahiko Endou, Masanori Nakagawa, Kaoru Shinba, Katsumi Yamamoto, Yoshihiro Sugisawa
  • Patent number: 7157885
    Abstract: A method for controlling an inverter controlled generator set which comprises a DC power source section having as a power source a generator driven by an engine and an inverter which converts an output of said DC power source section into an AC output, the method comprising a step of controlling a rotational speed of the engine so that the AC output suitable for driving a load is output from the inverter; wherein, after the engine is started, the rotational speed of the engine is controlled by a constant speed control mode for maintaining the rotational speed of the engine at a set rotational speed, and the rotational speed of the engine is increased to the set rotational speed; and wherein an operation of the inverter is started after the rotational speed of the engine reaches the set rotational speed.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: January 2, 2007
    Assignee: Kokusan Denki Co., Ltd.
    Inventors: Masanori Nakagawa, Masahiko Endou, Kaoru Shinba, Katsumi Yamamoto, Yoshihiro Sugisawa