Patents by Inventor Yusuke Hisada

Yusuke Hisada 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).

  • Address notifying apparatus and address notifying method
    Patent number: 7761517
    Abstract: An address notification device is provided with: a link information list storage part 106 for storing link information list composed of link information including an own address, an address of a communicating party, and process information about processing of communication information to be communicated between the own address and the communicating party address; a change information registration part 132 for adding the link information selected by a link information select part 130 with change information representing the content of the change; a link change information sending part 136 for sending link change information representing a change of the link information to a destination indicated by the communicating party address contained in the link information added with the change information; and a link information change part 138 for changing the link information on the basis of the change information added thereto in response to response information sent from the communicating party in response to the s
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: July 20, 2010
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yukio Tsuruoka, Satoshi Ono, Yusuke Hisada
  • Remote access VPN mediation method and mediation device
    Patent number: 7665132
    Abstract: A mediating apparatus is provided on an IP network, and stores an access control list (ACL) retained in a VPN gateway unit. The mediating apparatus: receives a retrieval request from a VPN client unit; acquires a private IP address of a communication unit by reference to ACL; searches DNS to acquire therefrom an IP address of the VPN gateway unit; generates a common key that is used for authentication between the VPN client unit and the VPN gateway unit and for encrypted communication therebetween; sends the IP address of the VPN gateway unit, the private IP address of the communication unit, and the common key to the VPN client unit; and sends the IP address of the VPN client unit and the common key to the VPN gateway unit.
    Type: Grant
    Filed: July 2, 2004
    Date of Patent: February 16, 2010
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yusuke Hisada, Yukio Tsuruoka, Satoshi Ono
  • Email access control scheme for communication network using identification concealment mechanism
    Patent number: 7188358
    Abstract: An email access control scheme capable of resolving problems of the real email address and enabling a unique identification of the identity of the user while concealing the user identification is disclosed. A personalized access ticket containing a sender's identification and a recipient's identification in correspondence is to be presented by a sender who wishes to send an email to a recipient so as to specify the recipient as an intended destination of the email. Then, accesses between the sender and the recipient by verifying an access right of the sender with respect to the recipient according to the personalized access ticket at a secure communication service.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: March 6, 2007
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yusuke Hisada, Satoshi Ono, Haruhisa Ichikawa
  • Remote access vpn mediation method and mediation device
    Publication number: 20060143702
    Abstract: A mediating apparatus is provided on an IP network, and stores an access control list (ACL) retained in a VPN gateway unit. The mediating apparatus: receives a retrieval request from a VPN client unit; acquires a private IP address of a communication unit by reference to ACL; searches DNS to acquire therefrom an IP address of the VPN gateway unit; generates a common key that is used for authentication between the VPN client unit and the VPN gateway unit and for encrypted communication therebetween; sends the IP address of the VPN gateway unit, the private IP address of the communication unit, and the common key to the VPN client unit; and sends the IP address of the VPN client unit and the common key to the VPN gateway unit.
    Type: Application
    Filed: July 2, 2004
    Publication date: June 29, 2006
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yusuke Hisada, Yukio Tsuruoka, Satoshi Ono
  • Address notifying apparatus and address notifying method
    Publication number: 20060064507
    Abstract: An address notification device is provided with: a link information list storage part 106 for storing link information list composed of link information including an own address, an address of a communicating party, and process information about processing of communication information to be communicated between the own address and the communicating party address; a change information registration part 132 for adding the link information selected by a link information select part 130 with change information representing the content of the change; a link change information sending part 136 for sending link change information representing a change of the link information to a destination indicated by the communicating party address contained in the link information added with the change information; and a link information change part 138 for changing the link information on the basis of the change information added thereto in response to response information sent from the communicating party in response to the s
    Type: Application
    Filed: August 30, 2004
    Publication date: March 23, 2006
    Inventors: Yukio Tsuruoka, Satoshi Ono, Yusuke Hisada