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:
Dec. 22, 2009
Filed:
Nov. 27, 2003
Ettore Elio Caprella, Turin, IT;
Paolo DE Lutiis, Turin, IT;
Manuel Leone, Turin, IT;
Pier Luigi Zaccone, Turin, IT;
Ettore Elio Caprella, Turin, IT;
Paolo De Lutiis, Turin, IT;
Manuel Leone, Turin, IT;
Pier Luigi Zaccone, Turin, IT;
Telecom Italia S.p.A., Milan, IT;
Abstract
Communication between an administrator device and an administered device in a network is arranged in the form of a chain of digitally signed communication items including messages sent from an originator device to a recipient device. Each message has an associated respective digitally signed receipt, and the originator device is configured not to send a new item toward the recipient device in the absence of a respective digitally signed receipt for a previously sent item. With at least one, and preferably by both of the administrator device and the administered device, there is stored a history record of communication items exchanged therebetween. The history record is agreed upon and signed by both the administrator device and the administered device.