Nova Patents
AT341786T

Apparatus for and method of controlling propagation of decryption keys

Abstract

Claims an encryption transmitting key control system, generation of (72) and a decoding key is identically claim a decoding each time the key claims to the user generation following of. Request each time when generation of the metal progressively, and an locating and 0, the system rejects the support is.

Term

Term ended

Expired 22 August 2022, 4.1 years ago.

  1. Priority
  2. Filed
  3. Granted
  4. Expired
  5. Today

23 members in 11 offices

This recordMember, by publication datePriority claim1 more office is in the list below

Priority claims1

Priority claims
DocumentOfficeKindDate
0121502United KingdomA

Members23

Family members, oldest first
DocumentOfficeKind
GB0121502D0United KingdomD0
GB2378539AUnited KingdomA
US2003044018A1United States of AmericaA1
WO03021400A2World Intellectual Property Organization (WIPO)A2
GB2378539BUnited KingdomB
WO03021400A3World Intellectual Property Organization (WIPO)A3
EP1423765A2European Patent Office (EPO)A2
IL160709D0IsraelD0
JP2005502240AJapanA
CN1571949AChinaA
RU2004107577ARussian FederationA
RU2273959C2Russian FederationC2
US7099478B2United States of AmericaB2
EP1423765B1European Patent Office (EPO)B1
AT341786TThis recordAustriaT
ATE341786T1AustriaT1
DE60215196D1GermanyD1
US2007038869A1United States of AmericaA1
ES2274067T3SpainT3
DE60215196T2GermanyT2
US7471796B2United States of AmericaB2
IL160709AIsraelA
CN100555158CChinaC