Patents by Inventor Koji TOCHITANI

Koji TOCHITANI 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).

  • DIRECT CURRENT POWER SUPPLY APPARATUS
    Publication number: 20230327556
    Abstract: A direct current power supply apparatus that converts direct current input voltage supplied from a direct current power supply and that outputs a direct current voltage at a different potential is shown. The apparatus includes a switching power supply apparatus and a current stabilizing circuit connected at a stage before or after the switching power supply apparatus. The switching power supply apparatus includes, an oscillating circuit in which a frequency is variable and that generates an oscillating signal to apply a switching frequency, and an oscillating control circuit that generates an oscillating control voltage or an oscillating control current that changes the frequency of the oscillating circuit to the frequency longer than the switching frequency.
    Type: Application
    Filed: April 11, 2023
    Publication date: October 12, 2023
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Hitoshi TABUCHI, Koji TOCHITANI, Takehito MISHIMA
  • DC power supply device, current stabilizing circuit for DC power supply device, and method for reducing noise of power-supply line
    Patent number: 11451141
    Abstract: A DC power supply device includes a switching power supply and a current stabilizing circuit connected in a pre-stage or a post-stage of the switching power supply. The DC power supply voltage device is configured to receive an input DC voltage from a DC power source via a power-supply line, convert the input DC voltage into a different DC voltage, and output the converted DC voltage.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: September 20, 2022
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventor: Koji Tochitani
  • DC POWER SUPPLY DEVICE, CURRENT STABILIZING CIRCUIT FOR DC POWER SUPPLY DEVICE, AND METHOD FOR REDUCING NOISE OF POWER-SUPPLY LINE
    Publication number: 20210376722
    Abstract: A DC power supply device includes a switching power supply and a current stabilizing circuit connected in a pre-stage or a post-stage of the switching power supply. The DC power supply voltage device is configured to receive an input DC voltage from a DC power source via a power-supply line, convert the input DC voltage into a different DC voltage, and output the converted DC voltage.
    Type: Application
    Filed: May 20, 2021
    Publication date: December 2, 2021
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventor: Koji TOCHITANI