Patents by Inventor Yasunobu OHMURA

Yasunobu OHMURA 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).

  • DC-DC converter and vehicular lamp
    Patent number: 9096169
    Abstract: A DC-DC converter includes a plurality of converter portions, each of which includes a switching circuit portion and a control circuit portion, the switching circuit portion being configured to obtain an output voltage by stepping up or stepping down an input voltage with a switching converter circuit including a switch element, a wound element, and a rectifier element, and the control circuit portion being configured to control the output voltage by controlling the switch element of the switching circuit portion. The plurality of converter portions are arranged on a single circuit board such that the switching circuit portion of each of the converter portions is not adjacent to the control circuit portion of each of a rest of the converter portions.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: August 4, 2015
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Yasunobu Ohmura, Takayoshi Kitagawa
  • DC-DC CONVERTER AND VEHICULAR LAMP
    Publication number: 20140203705
    Abstract: A DC-DC converter includes a plurality of converter portions, each of which includes a switching circuit portion and a control circuit portion, the switching circuit portion being configured to obtain an output voltage by stepping up or stepping down an input voltage with a switching converter circuit including a switch element, a wound element, and a rectifier element, and the control circuit portion being configured to control the output voltage by controlling the switch element of the switching circuit portion. The plurality of converter portions are arranged on a single circuit board such that the switching circuit portion of each of the converter portions is not adjacent to the control circuit portion of each of a rest of the converter portions.
    Type: Application
    Filed: January 16, 2014
    Publication date: July 24, 2014
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Yasunobu OHMURA, Takayoshi KITAGAWA