Patents by Inventor Ryoichi Doi

Ryoichi Doi 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).

  • Method for transmitting facsimile data between facsimile apparatuses through an internet protocol network and relay apparatuses used in the method
    Patent number: 6674541
    Abstract: A method for transmitting facsimile data between facsimile apparatuses each connected to a relay apparatus, and relay apparatuses being connected each other through an internet protocol network, includes steps of: performing an address conversion from a telephone number of a facsimile apparatus of the reception side to an IP address corresponding to the telephone number; transmitting a request for TCP connection to a relay apparatus corresponding to a destination of the IP address when receiving an identifying signal which indicates transmission of the facsimile data from the facsimile apparatus of the sending side; and transmitting the facsimile data to the relay apparatus corresponding to the destination of the IP address based on the TCP connection.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: January 6, 2004
    Assignee: Fujitsu Limited
    Inventors: Hideki Kamiyama, Kazuki Yoshiura, Katsuo Gomi, Hiroaki Hamano, Ryoichi Doi