Patents by Inventor Tomoaki UJIMARU

Tomoaki UJIMARU 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).

  • Voltage supply system and power source constituting same
    Patent number: 11502620
    Abstract: A voltage supply system and a power source that, in a voltage supply system in which a plurality of power sources (e.g., DC-DC converters) are connected in parallel, enable each power source to be set at a desired load ratio. The power source is used in a voltage supply system including a power source configured to output a voltage in a constant voltage mode on the basis of a first target voltage, and is connected in parallel to the constant voltage power source, the power source including a voltage generation unit configured to output a voltage switchably between a constant voltage mode based on a second target voltage greater than the first target voltage and a constant current mode based on a current limit value.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: November 15, 2022
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Tomoaki Ujimaru, Seiji Takahashi, Takaaki Sano, Takumi Uemura
  • VOLTAGE SUPPLY SYSTEM AND POWER SOURCE CONSTITUTING SAME
    Publication number: 20210399650
    Abstract: A voltage supply system and a power source that, in a voltage supply system in which a plurality of power sources (e.g., DC-DC converters) are connected in parallel, enable each power source to be set at a desired load ratio. The power source is used in a voltage supply system including a power source configured to output a voltage in a constant voltage mode on the basis of a first target voltage, and is connected in parallel to the constant voltage power source, the power source including a voltage generation unit configured to output a voltage switchably between a constant voltage mode based on a second target voltage greater than the first target voltage and a constant current mode based on a current limit value.
    Type: Application
    Filed: May 31, 2019
    Publication date: December 23, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Tomoaki UJIMARU, Seiji TAKAHASHI, Takaaki SANO, Takumi UEMURA