Patents by Inventor Yoshihiko Maeda

Yoshihiko Maeda 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: 20230311728
    Abstract: A vehicle seat air-conditioning device includes: a blower that is included in a seat; at least one of an inlet duct or an outlet duct, the inlet duct being a duct through which air is led to be drawn in from a surface of the seat by the blower, and the outlet duct being a duct through which the air led by the blower is discharged from a surface of the seat; and a controller that is electrically connected to the blower. The blower includes a current detection circuit that detects a current consumption of the blower. The controller determines whether an occupant is sitting on the seat, based on the current consumption detected by the current detection circuit.
    Type: Application
    Filed: June 12, 2023
    Publication date: October 5, 2023
    Inventor: Yoshihiko MAEDA
  • Publication number: 20230056109
    Abstract: The objective of the present invention is to reduce the content of dialkylcarbamoyl chloride contained in a (meth)acrylic acid ester compound having an isocyanate group. The present invention includes a method for producing a (meth)acrylic acid ester compound having an isocyanate group in which the content of dialkylcarbamoyl chloride is 0.1 mass % or less, where the method includes a step (2) in which a predetermined compound (B) and phosgene are brought into contact in the presence of an N-disubstituted formamide compound (A) to obtain a phosgene reaction product, and a step (3) in which the phosgene reaction product obtained in step (2) and a hydroxylamine hydrochloride compound are brought into contact to obtain a (meth)acrylic acid ester compound having a predetermined isocyanate group.
    Type: Application
    Filed: January 4, 2021
    Publication date: February 23, 2023
    Applicant: SHOWA DENKO K.K.
    Inventors: Tomomitsu WAKABAYASHI, Yoshihiko MAEDA
  • Patent number: 11367318
    Abstract: Reception unit receives data indicating water temperature of a body of water through which a vessel voyages, vessel speed, and a period for which those values are maintained. From storage unit, index value acquisition unit reads out a decrease amount of anti-fouling paint corresponding to the water temperature and vessel speed received by reception unit. Index value specification unit specifies a decrease amount of anti-fouling paint in the period by multiplying the length of time of the period received by reception unit by the decrease amount read out by index value acquisition unit. Remaining amount acquisition unit integrates the decrease amounts of the anti-fouling paint specified by index value specification unit at the time of coating with the anti-fouling paint and onward.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: June 21, 2022
    Assignee: Nippon Yusen Kabushiki Kaisha
    Inventors: Jun Kato, Kentaro Sato, Yoshihiko Maeda
  • Patent number: 11251739
    Abstract: A vehicle driving device includes an inverter which drives a motor. The inverter includes: a three-phase bridge circuit including a plurality of switching elements; a three-phase short circuit which short-circuits three phases of the motor via the three-phase bridge circuit; and a control circuit. The control circuit includes: a microprocessor which drives the three-phase bridge circuit; a malfunction notification circuit which outputs a malfunction notification signal when the microprocessor is malfunctioning; and a latch circuit which holds the malfunction notification signal outputted from the malfunction notification circuit. The control circuit outputs a three-phase short-circuit drive signal which drives the three-phase short circuit, based on the malfunction notification signal held by the latch circuit.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: February 15, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshihiko Maeda, Hisazumi Watanabe, Yuji Aoki, Akitaka Yoshikawa
  • Patent number: 11095237
    Abstract: A vehicle driving apparatus includes an inverter which drives a permanent magnet motor. The inverter includes a three-phase bridge circuit including a plurality of switch elements, a drive circuit connected to the three-phase bridge circuit, a control circuit connected to the drive circuit, and an abnormality detecting unit which detects abnormality of the inverter. The drive circuit includes a three-phase-short-circuit-forming circuit which causes three phases of the permanent magnet motor to form short circuits, an abnormality accepting terminal which accepts an abnormality signal output from the abnormality detecting unit, and a check terminal which accepts an active check signal for causing the three-phase-short-circuit-forming circuit to perform three-phase short circuit control.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: August 17, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Junichi Yukawa, Naoya Iwasaki, Hisazumi Watanabe, Yoshihiko Maeda
  • Publication number: 20210006195
    Abstract: A vehicle driving device includes an inverter which drives a motor. The inverter includes: a three-phase bridge circuit including a plurality of switching elements; a three-phase short circuit which short-circuits three phases of the motor via the three-phase bridge circuit; and a control circuit. The control circuit includes: a microprocessor which drives the three-phase bridge circuit; a malfunction notification circuit which outputs a malfunction notification signal when the microprocessor is malfunctioning; and a latch circuit which holds the malfunction notification signal outputted from the malfunction notification circuit. The control circuit outputs a three-phase short-circuit drive signal which drives the three-phase short circuit, based on the malfunction notification signal held by the latch circuit.
    Type: Application
    Filed: May 18, 2020
    Publication date: January 7, 2021
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshihiko MAEDA, Hisazumi WATANABE, Yuji AOKI, Akitaka YOSHIKAWA
  • Publication number: 20200186058
    Abstract: A vehicle driving apparatus includes an inverter which drives a permanent magnet motor. The inverter includes a three-phase bridge circuit including a plurality of switch elements, a drive circuit connected to the three-phase bridge circuit, a control circuit connected to the drive circuit, and an abnormality detecting unit which detects abnormality of the inverter. The drive circuit includes a three-phase-short-circuit-forming circuit which causes three phases of the permanent magnet motor to form short circuits, an abnormality accepting terminal which accepts an abnormality signal output from the abnormality detecting unit, and a check terminal which accepts an active check signal for causing the three-phase-short-circuit-forming circuit to perform three-phase short circuit control.
    Type: Application
    Filed: December 4, 2019
    Publication date: June 11, 2020
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Junichi YUKAWA, Naoya IWASAKI, Hisazumi WATANABE, Yoshihiko MAEDA
  • Patent number: 10411609
    Abstract: The present disclosure reduces heat concentration on switching elements. A plurality of high-side transistors are connected in parallel to constitute high-side switching element. A plurality of low-side transistors are connected in parallel to constitute low-side switching element. The plurality of high-side transistors are arranged, one by one, next to the plurality of low-side transistors.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: September 10, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Junichi Yukawa, Yoshihiko Maeda, Satoshi Okawa
  • Publication number: 20190199224
    Abstract: The present disclosure reduces heat concentration on switching elements. A plurality of high-side transistors are connected in parallel to constitute high-side switching element. A plurality of low-side transistors are connected in parallel to constitute low-side switching element. The plurality of high-side transistors are arranged, one by one, next to the plurality of low-side transistors.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 27, 2019
    Inventors: JUNICHI YUKAWA, YOSHIHIKO MAEDA, SATOSHI OKAWA
  • Patent number: 10139235
    Abstract: A fuel oil information providing server device acquires a reference fuel oil price at bunkering locations on a sailing route specified by a voyage ID input to a terminal device by a user or at which a ship is able to call from the sailing route, and data indicating conditions for correcting the reference fuel oil price, and specifies a fuel oil price obtained by correcting the reference fuel oil price indicated by the acquired data in accordance with the conditions. Fuel oil information providing server device generates display instruction data for instructing that a specified fuel oil price be displayed as a list along with determination rules for a bunkering amount at one or more bunkering locations, and outputs the data to a terminal device that displays information to be used for formulating a bunkering plan.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: November 27, 2018
    Assignee: Nippon Yusen Kabushiki Kaisha
    Inventors: Atsushi Yamaguchi, Masaharu Urabe, Yoshihiko Maeda, Ryo Kakuta
  • Patent number: 10065585
    Abstract: A vehicle power supply system has a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a DC-DC converter, and a controller. In a case where power is supplied to both of a starter and an electrical component from any one of a first battery and a second battery, the controller causes power to be supplied to the electrical component via the DC-DC converter.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: September 4, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Naoya Iwasaki, Yoshihiko Maeda
  • Publication number: 20180211453
    Abstract: Reception unit receives data indicating water temperature of a body of water through which a vessel voyages, vessel speed, and a period for which those values are maintained. From storage unit, index value acquisition unit reads out a decrease amount of anti-fouling paint corresponding to the water temperature and vessel speed received by reception unit. Index value specification unit specifies a decrease amount of anti-fouling paint in the period by multiplying the length of time of the period received by reception unit by the decrease amount read out by index value acquisition unit. Remaining amount acquisition unit integrates the decrease amounts of the anti-fouling paint specified by index value specification unit at the time of coating with the anti-fouling paint and onward.
    Type: Application
    Filed: July 17, 2015
    Publication date: July 26, 2018
    Applicant: Nippon Yusen Kabushiki Kaisha
    Inventors: Jun KATO, Kentaro SATO, Yoshihiko MAEDA
  • Patent number: 9876459
    Abstract: A motor driving circuit has a supply line connected to a DC power source, an inverter whose input side is connected to the supply line and whose output side is connected to a motor, a power switch inserted in the supply line for switching the supply line between conducting and cut-off states, a voltage detector for detecting a voltage between the direct-current power source and the power switch, and an insulation resistance detector for first detecting, based on a result of detection by the voltage detector with the power switch in the cut-off state, an insulation resistance on the preceding-stage side of the power switch and subsequently detecting, based on a result of detection by the voltage detector with the power switch in the conducting state, an insulation resistance on the succeeding-stage side of the power switch.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: January 23, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yoshinori Hayashi, Hoshihito Okada, Yoshihiko Maeda, Yoichi Enomoto, Hiroshi Takao
  • Publication number: 20170237382
    Abstract: A motor driving circuit has a supply line connected to a DC power source, an inverter whose input side is connected to the supply line and whose output side is connected to a motor, a power switch inserted in the supply line for switching the supply line between conducting and cut-off states, a voltage detector for detecting a voltage between the direct-current power source and the power switch, and an insulation resistance detector for first detecting, based on a result of detection by the voltage detector with the power switch in the cut-off state, an insulation resistance on the preceding-stage side of the power switch and subsequently detecting, based on a result of detection by the voltage detector with the power switch in the conducting state, an insulation resistance on the succeeding-stage side of the power switch.
    Type: Application
    Filed: May 1, 2017
    Publication date: August 17, 2017
    Inventors: Yoshinori HAYASHI, Hoshihito OKADA, Yoshihiko MAEDA, Yoichi ENOMOTO, Hiroshi TAKAO
  • Publication number: 20170197567
    Abstract: A vehicle power supply system has a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a DC-DC converter, and a controller. In a case where power is supplied to both of a starter and an electrical component from any one of a first battery and a second battery, the controller causes power to be supplied to the electrical component via the DC-DC converter.
    Type: Application
    Filed: July 7, 2015
    Publication date: July 13, 2017
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: NAOYA IWASAKI, YOSHIHIKO MAEDA
  • Patent number: 9673746
    Abstract: A motor driving circuit has a supply line connected to a DC power source, an inverter whose input side is connected to the supply line and whose output side is connected to a motor, a power switch inserted in the supply line for switching the supply line between conducting and cut-off states, a voltage detector for detecting a voltage between the direct-current power source and the power switch, and an insulation resistance detector for first detecting, based on a result of detection by the voltage detector with the power switch in the cut-off state, an insulation resistance on the preceding-stage side of the power switch and subsequently detecting, based on a result of detection by the voltage detector with the power switch in the conducting state, an insulation resistance on the succeeding-stage side of the power switch.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: June 6, 2017
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yoshinori Hayashi, Hoshihito Okada, Yoshihiko Maeda, Yoichi Enomoto, Hiroshi Takao
  • Publication number: 20160320191
    Abstract: A fuel oil information providing server device acquires a reference fuel oil price at bunkering locations on a sailing route specified by a voyage ID input to a terminal device by a user or at which a ship is able to call from the sailing route, and data indicating conditions for correcting the reference fuel oil price, and specifies a fuel oil price obtained by correcting the reference fuel oil price indicated by the acquired data in accordance with the conditions. Fuel oil information providing server device generates display instruction data for instructing that a specified fuel oil price be displayed as a list along with determination rules for a bunkering amount at one or more bunkering locations, and outputs the data to a terminal device that displays information to be used for formulating a bunkering plan.
    Type: Application
    Filed: January 9, 2014
    Publication date: November 3, 2016
    Applicant: NIPPON YUSEN KABUSHIKI KAISHA
    Inventors: Atsushi YAMAGUCHI, Masaharu URABE, Yoshihiko MAEDA, Ryo KAKUTA
  • Publication number: 20160181965
    Abstract: A motor driving circuit has a supply line connected to a DC power source, an inverter whose input side is connected to the supply line and whose output side is connected to a motor, a power switch inserted in the supply line for switching the supply line between conducting and cut-off states, a voltage detector for detecting a voltage between the direct-current power source and the power switch, and an insulation resistance detector for first detecting, based on a result of detection by the voltage detector with the power switch in the cut-off state, an insulation resistance on the preceding-stage side of the power switch and subsequently detecting, based on a result of detection by the voltage detector with the power switch in the conducting state, an insulation resistance on the succeeding-stage side of the power switch.
    Type: Application
    Filed: February 29, 2016
    Publication date: June 23, 2016
    Inventors: Yoshinori HAYASHI, Hoshihito OKADA, Yoshihiko MAEDA, Yoichi ENOMOTO, Hiroshi TAKAO
  • Patent number: 9312797
    Abstract: A motor driving circuit has a supply line connected to a DC power source, an inverter whose input side is connected to the supply line and whose output side is connected to a motor, a power switch inserted in the supply line for switching the supply line between conducting and cut-off states, a voltage detector for detecting a voltage between the direct-current power source and the power switch, and an insulation resistance detector for first detecting, based on a result of detection by the voltage detector with the power switch in the cut-off state, an insulation resistance on the preceding-stage side of the power switch and subsequently detecting, based on a result of detection by the voltage detector with the power switch in the conducting state, an insulation resistance on the succeeding-stage side of the power switch.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 12, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshinori Hayashi, Hoshihito Okada, Yoshihiko Maeda, Yoichi Enomoto, Hiroshi Takao
  • Patent number: 9236827
    Abstract: A motor drive circuit comprises: a DC power supply; power supply lines; an inverter which has upper arm switch elements and lower arm switch elements; and a detection unit for detecting, based on a power state on the previous stage side of the inverter, the insulation resistances of the motor drive circuit and the motor. The detection unit performs a first detection operation for detecting the insulation resistances by using the output of the DC power supply while the upper arm switch elements and the lower arm switch elements are all turned off and a second detection operation for detecting the insulation resistances by using the output of the DC power supply while the elements of one of the upper arm switch elements and the lower arm switch elements are all turned off and at least one of the elements of the other one is turned on.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: January 12, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yoichi Enomoto, Hiroshi Takao, Yoshihiko Maeda, Hoshihito Okada