Patents by Inventor Chuan-Fen Chiu

Chuan-Fen Chiu 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).

  • Communications device and communications program
    Patent number: 7558956
    Abstract: A transmitting side communications device transmits a Delete Payload of an IPsec SA using an ISAKMP SA that satisfies a transmission condition, and more preferably using all ISAKMP SAs that exist between communications devices. The receiving side communications device accepts a Delete Payload by an ISAKMP SA that satisfies a reception condition, and preferably any ISAKMP SA that exists between the communications devices. As long as there exists an IPsec SA that was established using the ISAKMP SA, it remains possible to maintain an ISAKMP SA, without completely deleting it, and to transmit and receive a Delete Payload by that ISAKMP SA.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: July 7, 2009
    Assignee: Panasonic Corporation
    Inventors: Atsuhiro Tsuji, Yukie Gotoh, Keiichi Takagaki, Chuan-Fen Chiu
  • Communications device and communications program
    Publication number: 20050185644
    Abstract: A transmitting side communications device transmits a Delete Payload of an IPsec SA using an ISAKMP SA that satisfies a transmission condition, and more preferably using all ISAKMP SAs that exist between communications devices. The receiving side communications device accepts a Delete Payload by an ISAKMP SA that satisfies a reception condition, and preferably any ISAKMP SA that exists between the communications devices. As long as there exists an IPsec SA that was established using the ISAKMP SA, it remains possible to maintain an ISAKMP SA, without completely deleting it, and to transmit and receive a Delete Payload by that ISAKMP SA.
    Type: Application
    Filed: February 4, 2005
    Publication date: August 25, 2005
    Inventors: Atsuhiro Tsuji, Yukie Gotoh, Keiichi Takagaki, Chuan-Fen Chiu