Patents by Inventor Junichi Kawamura

Junichi Kawamura 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: 20240071139
    Abstract: To provide an information processing method for performing a process for determining a learning level of a user or presenting the determined learning level. An information processing method includes an input step of inputting time-series media information representing a movement or conduct of a learning user, a first determination step of determining a learning level of the user on the basis of the time-series media information, and an output step of outputting a portion in the time-series media information at which the movement or action by the user is different from a reference movement or action, on the basis of the learning level of the user determined in the first determination step.
    Type: Application
    Filed: November 16, 2021
    Publication date: February 29, 2024
    Inventors: KAZUKI KAWAMURA, JUNICHI REKIMOTO, KOJIRO KASHIWA
  • Patent number: 11489200
    Abstract: A main object of the present disclosure is to provide a liquid electrolyte in which concentration of active fluoride ion is high. The present disclosure achieves the object by providing a liquid electrolyte to be used in a fluoride ion battery, the liquid electrolyte comprising: a potassium fluoride; an alkali metal amide salt including a cation of an alkali metal and an amide anion; and a glyme represented by a general formula R1—O(CH2CH2O)n—R2, in which R1 and R2 is each independently an alkyl group including 4 or less carbon atoms or a fluoroalkyl group including 4 or less carbon atoms, and n is within a range of 2 to 10.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: November 1, 2022
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOHOKU UNIVERSITY
    Inventors: Hirofumi Nakamoto, Reiji Takekawa, Junichi Kawamura
  • Publication number: 20200321654
    Abstract: A main object of the present disclosure is to provide a liquid electrolyte in which concentration of active fluoride ion is high. The present disclosure achieves the object by providing a liquid electrolyte to be used in a fluoride ion battery, the liquid electrolyte comprising: a potassium fluoride; an alkali metal amide salt including a cation of an alkali metal and an amide anion; and a glyme represented by a general formula R1—O(CH2CH2O)n—R2, in which R1 and R2 is each independently an alkyl group including 4 or less carbon atoms or a fluoroalkyl group including 4 or less carbon atoms, and n is within a range of 2 to 10.
    Type: Application
    Filed: March 19, 2020
    Publication date: October 8, 2020
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOHOKU UNIVERSITY
    Inventors: Hirofumi NAKAMOTO, Reiji TAKEKAWA, Junichi KAWAMURA
  • Publication number: 20200153043
    Abstract: A main object of the present disclosure is to provide a liquid electrolyte in which concentration of active fluoride ion is high even when a cesium fluoride (CsF) is included therein. The present disclosure achieves the object by providing a liquid electrolyte to be used in a fluoride ion battery, the liquid electrolyte comprising: a cesium fluoride and a solvent; and an amount of moisture is 50 ppm or more and 1100 ppm or less.
    Type: Application
    Filed: October 10, 2019
    Publication date: May 14, 2020
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOHOKU UNIVERSITY
    Inventors: Hirofumi NAKAMOTO, Reiji TAKEKAWA, Junichi KAWAMURA
  • Patent number: 9001922
    Abstract: A power transmitter 50 is usable in a wireless power transmission system for transmitting power wirelessly. The power transmitter 50 includes a power transmitting section 51 for transmitting power; a communication section 52 for communicating information, for controlling the transmission of the power, with the power receiver 60; and a control section 53 for controlling the power transmitting section 51 such that the power to be sent out by the power transmitting section 51 is higher while the communication section 52 is performing the communication.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: April 7, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shutai Okamura, Keisuke Kinoshita, Junichi Kawamura
  • Patent number: 8929563
    Abstract: The transmitter of a wireless power transmission audio system includes: a transmission signal generating section for generating a transmission signal comprised of an RF signal; a first resonant circuit which receives and sends out the transmission signal; a detecting section for sensing a variation in the transmission signal; and a transmission signal adjusting section. The loudspeaker of the system includes: a second resonant circuit for receiving the transmission signal by producing a magnetic field resonant coupling phenomenon; and an audio output section for reproducing the audio signal. At least one of the transmitter and the loudspeaker includes an impedance adjusting section which changes an impedance value on the transmission line of the transmission signal. When the impedance adjusting section changes the impedance value, the transmission signal adjusting section changes the signal waveform of the transmission signal.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: January 6, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Keisuke Kinoshita, Junichi Kawamura, Shutai Okamura
  • Patent number: 8872385
    Abstract: A wireless power transmission system transmits power wirelessly from a power transmitter to a power receiver. The power transmitter includes a class E amplifier, a transmitting-end resonant circuit, a detector that detects a voltage or current waveform at a predetermined position in the class E amplifier in accordance with the impedance of the transmitting-end resonant circuit as viewed from the class E amplifier, and a signal extractor that extracts a signal according to the waveform. The power receiver includes a receiving-end resonant circuit, a rectifier circuit, a power reproducing section, and an impedance changer connected between the rectifier circuit and the power reproducing section to change its impedance. When the impedance is changed, the detector detects the waveform variation and the signal extractor extracts and outputs a signal corresponding to the waveform detected by the detector.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: October 28, 2014
    Assignee: Panasonic Corporation
    Inventors: Keisuke Kinoshita, Junichi Kawamura, Shutai Okamura
  • Publication number: 20120161538
    Abstract: A wireless power transmission system transmits power wirelessly from a power transmitter to a power receiver. The power transmitter includes a class E amplifier, a transmitting-end resonant circuit, a detector that detects a voltage or current waveform at a predetermined position in the class E amplifier in accordance with the impedance of the transmitting-end resonant circuit as viewed from the class E amplifier, and a signal extractor that extracts a signal according to the waveform. The power receiver includes a receiving-end resonant circuit, a rectifier circuit, a power reproducing section, and an impedance changer connected between the rectifier circuit and the power reproducing section to change its impedance. When the impedance is changed, the detector detects the waveform variation and the signal extractor extracts and outputs a signal corresponding to the waveform detected by the detector.
    Type: Application
    Filed: December 19, 2011
    Publication date: June 28, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Keisuke KINOSHITA, Junichi KAWAMURA, Shutai OKAMURA
  • Publication number: 20120163619
    Abstract: The transmitter of a wireless power transmission audio system includes: a transmission signal generating section for generating a transmission signal comprised of an RF signal; a first resonant circuit which receives and sends out the transmission signal; a detecting section for sensing a variation in the transmission signal; and a transmission signal adjusting section. The loudspeaker of the system includes: a second resonant circuit for receiving the transmission signal by producing a magnetic field resonant coupling phenomenon; and an audio output section for reproducing the audio signal. At least one of the transmitter and the loudspeaker includes an impedance adjusting section which changes an impedance value on the transmission line of the transmission signal. When the impedance adjusting section changes the impedance value, the transmission signal adjusting section changes the signal waveform of the transmission signal.
    Type: Application
    Filed: December 19, 2011
    Publication date: June 28, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Keisuke KINOSHITA, Junichi KAWAMURA, Shutai OKAMURA
  • Publication number: 20120063505
    Abstract: A power transmitter 50 is usable in a wireless power transmission system for transmitting power wirelessly. The power transmitter 50 includes a power transmitting section 51 for transmitting power; a communication section 52 for communicating information, for controlling the transmission of the power, with the power receiver 60; and a control section 53 for controlling the power transmitting section 51 such that the power to be sent out by the power transmitting section 51 is higher while the communication section 52 is performing the communication.
    Type: Application
    Filed: September 8, 2011
    Publication date: March 15, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Shutai OKAMURA, Keisuke KINOSHITA, Junichi KAWAMURA
  • Patent number: 5208399
    Abstract: A method for producing allyl chloride by oxychlorination of propylene, which comprises reacting propylene, hydrogen chloride and oxygen in the presence of a catalyst comprising an alloy of tellurium supported on a carrier.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: May 4, 1993
    Assignee: Tosoh Corporation
    Inventors: Takanori Miyake, Kazunari Hirakawa, Makoto Hanaya, Junichi Kawamura
  • Patent number: 5032836
    Abstract: A guide device for visually handicapped person which has a portable unit and a position indicator unit. The portable unit is carried by the visually handicapped person and includes a radio frequency signal oscillator. The position indicator unit is disposed to a desired place and includes a radio frequency signal receiver and a loud speaker.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: July 16, 1991
    Assignee: Namco, Ltd.
    Inventors: Yujiro Ono, Syuichi Nakatome, Yoshihide Kumada, Kenji Suzuki, Junichi Kawamura, Katunori Ota, Satoru Tomiyama