Patents by Inventor Atsuko Taguchi

Atsuko Taguchi 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).

  • IP network system having unauthorized intrusion safeguard function
    Patent number: 6895432
    Abstract: An IP communication network system has a plurality of autonomous systems, configuring IP networks of domains independent of each other, for performing interior- and exterior-forwarding of IP packets. The plurality of autonomous systems include a plurality of border relay devices positioned at borders between the IP networks. Each of the plurality of border relay devices includes a discarding unit for discarding, if the IP packet forwarded is an unauthorized intrusion packet, this unauthorized packet when detecting a re-intrusion on the basis of filtering information for detecting the re-intrusion of the unauthorized packet, and a distribution unit for distributing the filtering information to all other border relay devices within the same autonomous system.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: May 17, 2005
    Assignee: Fujitsu Limited
    Inventors: Tadanao Ando, Atsuko Taguchi, Tatsuo Kondou, Hiroyuki Kida
  • IP network system having unauthorized intrusion safeguard function
    Publication number: 20020078202
    Abstract: An IP communication network system has a plurality of autonomous systems, configuring IP networks of domains independent of each other, for performing interior- and exterior-forwarding of IP packets. The plurality of autonomous systems include a plurality of border relay devices positioned at borders between the IP networks. Each of the plurality of border relay devices includes a discarding unit for discarding, if the IP packet forwarded is an unauthorized intrusion packet, this unauthorized packet when detecting a re-intrusion on the basis of filtering information for detecting the re-intrusion of the unauthorized packet, and a distribution unit for distributing the filtering information to all other border relay devices within the same autonomous system.
    Type: Application
    Filed: May 4, 2001
    Publication date: June 20, 2002
    Inventors: Tadanao Ando, Atsuko Taguchi, Tatsuo Kondou, Hiroyuki Kida