The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 2009
Filed:
Feb. 04, 2005
Atsuhiro Tsuji, Minoh, JP;
Yukie Gotoh, Hirakata, JP;
Keiichi Takagaki, Osaka, JP;
Chuan-fen Chiu, Taipei, TW;
Atsuhiro Tsuji, Minoh, JP;
Yukie Gotoh, Hirakata, JP;
Keiichi Takagaki, Osaka, JP;
Chuan-Fen Chiu, Taipei, TW;
Panasonic Corporation, Osaka, JP;
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.