Patents by Inventor Masashi Oi

Masashi Oi 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).

  • Auxiliary power supply unit and image forming apparatus
    Patent number: 7496312
    Abstract: An auxiliary power supply unit, which is attachable to and detachable from an apparatus, includes a charge unit configured to store electric charge, a terminal configured to establish electrical connection for discharge with the apparatus, and a discharge unit situated between the charge unit and the terminal to provide a discharge path that electrically connect the charge unit to the apparatus, the discharge path having an open/closed state thereof controlled during a period when an electric power is supplied from the apparatus, the discharge path being opened in response to a stoppage of supply of the electric power from the apparatus.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: February 24, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Naoki Sato, Keiichi Sugai, Masae Sugawara, Masashi Oi
  • Auxiliary power supply unit and image forming apparatus
    Publication number: 20060024079
    Abstract: An auxiliary power supply unit, which is attachable to and detachable from an apparatus, includes a charge unit configured to store electric charge, a terminal configured to establish electrical connection for discharge with the apparatus, and a discharge unit situated between the charge unit and the terminal to provide a discharge path that electrically connect the charge unit to the apparatus, the discharge path having an open/closed state thereof controlled during a period when an electric power is supplied from the apparatus, the discharge path being opened in response to a stoppage of supply of the electric power from the apparatus.
    Type: Application
    Filed: July 29, 2005
    Publication date: February 2, 2006
    Inventors: Naoki Sato, Keiichi Sugai, Masae Sugawara, Masashi Oi