Patents by Inventor Hidemoto Nishiyama

Hidemoto Nishiyama 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).

  • Image forming system
    Patent number: 6185321
    Abstract: In an image forming system, a digital copying machine, which is requested to determine image data, stores determination history data including a result of determination in its memory when the result indicates that the image data are prohibited to be copied, and transfers the determination history data to a digital copying machine of a requesting end, and also transfers the determination history data automatically or as requested to other digital copying machine, a central image formation control unit or a host computer of the service center. As a result, an inhibit copy action can be prevented even when a digital copying machine being used within the system is not provided with an image determining function, thereby providing a security system which can inform others of an occurrence of an illegal or dishonest action at real time.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: February 6, 2001
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tamotsu Fukushima, Yasuhiro Nakai, Masakatsu Nakamura, Syoichiro Yoshiura, Hidemoto Nishiyama