Patents by Inventor Tetsuya Fujiyama

Tetsuya Fujiyama 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).

  • Patent number: 6754212
    Abstract: In view of providing a network system enabling communication having passed fire walls (repeaters) and assuring high security and operation flexibility through access control based on users and applications, a user-held table indicating correspondence between repeaters and passwords, a repeater-held table indicating correspondence between users and passwords and a table indicating access regions are defined respectively for users, departments of users and official positions of users and a route control information storing table indicating correspondence between networks and next transmitting destination is also provided to execute the access control for each user.
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: June 22, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Masato Terada, Makoto Kayashima, Takahiko Kawashima, Tetsuya Fujiyama, Minoru Koizumi, Kazuo Nishimura, Kazunari Hirayama, Takaaki Ogino
  • Patent number: 6111883
    Abstract: In view of providing a network system enabling communication having passed fire walls (repeaters) and assuring high security and operation flexibility through access control based on users and applications, a user-held table indicating correspondence between repeaters and passwords, a repeater-held table indicating correspondence between users and passwords and a table indicating access regions are defined respectively for users, departments of users and official positions of users and a route control information storing table indicating correspondence between networks and next transmitting destination is also provided to execute the access control for each user.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: August 29, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Masato Terada, Makoto Kayashima, Takahiko Kawashima, Tetsuya Fujiyama, Minoru Koizumi, Kazuo Nishimura, Kazunari Hirayama, Takaaki Ogino