Patents by Inventor Kazufumi Usui

Kazufumi Usui 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: 20240171834
    Abstract: A vehicular camera includes a first shield made of metal and disposed to surround a circuit board. The first shield includes a first bottom surface portion, a second bottom surface portion disposed to be separated from the first bottom surface portion, and a connection portion connecting an entire periphery of the first bottom surface portion and an entire periphery of the second bottom surface portion. At least a first side surface portion, a second side surface portion, a third side surface portion, and a fourth side surface portion of the first shield are formed by a contiguously curved surface, and at least the first side surface portion, the second side surface portion, the third side surface portion, the fourth side surface portion, the first bottom surface portion, the connection portion, and the second bottom surface portion are formed by a contiguously curved surface.
    Type: Application
    Filed: January 29, 2024
    Publication date: May 23, 2024
    Inventors: Yoshiki USUI, Takeshi HARADA, Masayuki YOSHIE, Kouichi KAWAMOTO, Ken NAKAMURA, Tadafumi KUROGI, Kazufumi TAKESHITA, Kenichi KUWAYAMA
  • Patent number: 4634953
    Abstract: An output voltage of a solar cell is supplied to a voltage converter. The voltage converter converts the input voltage into a predetermined voltage, and supplies it to a capacitor. The capacitor is charged by the output current of the voltage converter. The capacitor has a relatively large capacitance. A second voltage converter converts an input voltage from the capacitor into a voltage which is lower than the charged voltage of the capacitor and higher than a minimum operating voltage of a load. The load performs a predetermined operation using the output voltage of the second voltage converter.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: January 6, 1987
    Assignee: Casio Computer Co., Ltd.
    Inventors: Hideyuki Shoji, Kazufumi Usui