Patents by Inventor Shu HAYASHI

Shu HAYASHI 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: 20200106379
    Abstract: A motor control circuit includes a control circuit configured to output a pulse width modulation signal for controlling a switching operation of an inverter circuit, the inverter circuit being configured to supply an alternating current power to a motor, and includes a speed-change detecting circuit configured to detect a change in a speed command signal and, output, in response to the change meeting and exceeding a predetermined limit, a signal indicating that the speed command signal has changed to the control circuit to cause the control circuit to change a duty cycle of the pulse width modulation signal, the speed command signal specifying a target value of a rotational speed of the motor.
    Type: Application
    Filed: September 20, 2019
    Publication date: April 2, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Makio ABE, Shu HAYASHI, Masato AOKI
  • Publication number: 20200106381
    Abstract: A motor control circuit includes a control circuit configured to control a switching operation of an inverter circuit, the inverter circuit being configured to supply an alternating current power to a motor, and includes a determination-information generating circuit configured to generate at least one determination value that conveys information on whether the motor malfunctions or deteriorates. The motor control circuit includes a determination circuit configured to determine whether the motor malfunctions or deteriorates based on the determination value to output, as an interrupt signal, a signal indicating that the motor malfunctions or deteriorates to the control circuit.
    Type: Application
    Filed: September 20, 2019
    Publication date: April 2, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Makio ABE, Takatoshi ITAGAKI, Shu HAYASHI, Masato AOKI
  • Publication number: 20190386354
    Abstract: A valuable material recovery method includes a discharge step of discharging a lithium-ion battery; a thermal decomposition step of reducing a lithium compound, which is a cathode active material, into a magnetic oxide by thermally treating the lithium-ion battery after being discharged; a crushing step of crushing the lithium-ion battery, after being thermally decomposed, into fragments of a size suitable for wind sorting, allowing part of the magnetic oxide to remain in the aluminum foil; a sieving step of sieving a crushed material to separate the crushed material into an oversized product and an undersized product; a wind sorting step of separating the oversized product into a heavy product and a light product; and a magnetic sorting step of sorting and recovering the aluminum foil with a residue of the magnetic oxide, as a magnetized material, and recovering the copper foil as a non-magnetized material from the light product.
    Type: Application
    Filed: January 23, 2018
    Publication date: December 19, 2019
    Inventors: Shu Muraoka, Hiroshi Hayashi, Hiromichi Koizumi, Ryutaro Fujisawa