Patents by Inventor Akira Nishihata

Akira Nishihata 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).

  • Confidential communication method using VPN, system thereof, program thereof, and recording medium for the program
    Patent number: 9185092
    Abstract: In a confidential-communication system that uses a first-communication network that is Internet capable of confidential communication using VPN, and a second communication network that is an audio-circuit network, a method is implemented wherein a send/receive-processing portion 5 of a communication control device 3 completes authentication between users by implementing a P2P connection between each communication control device 3 by referencing specific information that specifies another party of a P2P connection in a memory portion 4 on the communication device 3 before confidential communication starts using VPN; a confidential-communication preparation portion 70 of the communication control device 3 exchanges via the second communication network VPN joint information required to establish a VPN link with the first communication network; and a switching portion 71 of the communication control device 3 starts confidential communication using VPN over a first-communication network.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: November 10, 2015
    Inventors: Akira Nishihata, Hiroshi Tanabe
  • CONFIDENTIAL COMMUNICATION METHOD USING VPN, SYSTEM THEREOF, PROGRAM THEREOF, AND RECORDING MEDIUM FOR THE PROGRAM
    Publication number: 20130074176
    Abstract: In a confidential-communication system that uses a first-communication network that is Internet capable of confidential communication using VPN, and a second communication network that is an audio-circuit network, a method is implemented wherein a send/receive-processing portion 5 of a communication control device 3 completes authentication between users by implementing a P2P connection between each communication control device 3 by referencing specific information that specifies another party of a P2P connection in a memory portion 4 on the communication device 3 before confidential communication starts using VPN; a confidential-communication preparation portion 70 of the communication control device 3 exchanges via the second communication network VPN joint information required to establish a VPN link with the first communication network; and a switching portion 71 of the communication control device 3 starts confidential communication using VPN over a first-communication network.
    Type: Application
    Filed: March 11, 2011
    Publication date: March 21, 2013
    Inventors: Akira Nishihata, Hiroshi Tanabe