EP1501237A4

Encrypted communication system, key delivery server thereof, terminal device, and key sharing method

Abstract

This record has no abstract on file.

EP1501237A4, drawing sheet 1 — Sheet 1 of 10

Term

Term ended

Projected expiry passed 28 April 2023, 3.4 years ago.

10 sheets

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Sheet 2
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Sheet 10

Every citation, both waysCites: the store holds 0 of 1

Citations
Reference	Relation	Cited during
ANZAI J ET AL: "A FLEXIBLE METHOD FOR MASKED SHARING OF GROUP KEYS", IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS, COMMUNICATIONS AND COMPUTER SCIENCES, INSTITUTE OF ELECTRONICS INFORMATION AND COMM. ENG. TOKYO, JP, vol. E84-A, no. 1, 1 January 2001 (2001-01-01), pages 239 - 246, XP001006545, ISSN: 0916-8508	Non-patent	Search report
YOSHIDA M ET AL: "A SUBSCRIBER-EXCLUDING AND TRAITOR-TRACING BROADCAST DISTRIBUTION SYSTEM", IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS, COMMUNICATIONS AND COMPUTER SCIENCES, INSTITUTE OF ELECTRONICS INFORMATION AND COMM. ENG. TOKYO, JP, vol. E84-A, no. 1, 1 January 2001 (2001-01-01), pages 247 - 255, XP001006546, ISSN: 0916-8508	Non-patent	Search report
NAOR M, PINKAS B: "Efficient Trace and Revoke Schemes", FC 2000. PROCEEDINGS OF THE 4TH INTERNATIONAL CONFERENCE ON FINANCIAL CRYPTOGRAPHY .LECTURE NOTES IN COMPUTER SCIENCE, SPRINGER-VERLAG, vol. 1962, February 2000 (2000-02-01), ANGUILLA, pages 1 - 20, XP002326817, ISBN: 3-540-42700-7	Non-patent	Search report
SUN H-M ET AL: "Construction of dynamic threshold schemes", ELECTRONICS LETTERS, IEE STEVENAGE, GB, vol. 30, no. 24, 24 November 1994 (1994-11-24), pages 2023 - 2025, XP006001402, ISSN: 0013-5194	Non-patent	Search report
See also references of WO 03094422A1	Non-patent	Search report

12 members in 7 offices

This recordMember, by publication datePriority claim

Priority claims9

Priority claims
Document	Office	Kind	Date
2002129359	Japan	A	2002-04-30
2002129359	Japan	A	2002-04-30
2002129359	Japan	–	2002-04-30
0305482	Japan	W	2003-04-28
0305482	Japan	W	2003-04-28
2002129359	–	–	–
JP20020129359	–	–	–
JP2003005482	–	–	–
WO2003JP05482	–	–	–

Members12

Family members, oldest first
Document	Office	Kind
WO03094422A1	World Intellectual Property Organization (WIPO)	A1	2003-11-13
AU2003235971A1	Australia	A1	2003-11-17
TW200407023A	Taiwan Province of China	A	2004-05-01
EP1501237A1	European Patent Office (EPO)	A1	2005-01-26
EP1501237A4This record	European Patent Office (EPO)	A4	2005-06-29
US2005141720A1	United States of America	A1	2005-06-30
CN1650570A	China	A	2005-08-03
JPWO2003094422A1	Japan	A1	2005-09-08
TWI246298B	Taiwan Province of China	B	2005-12-21
JP4156588B2	Japan	B2	2008-09-24
US7539315B2	United States of America	B2	2009-05-26
CN100505618C	China	C	2009-06-24

7 legal events, as the office reported them to INPADOC

Over the term

Point at a mark for the event

Events

Legal events, newest first
	Event	Code
2013-04-24	Application deemed to be withdrawnWithdrawn18D	18D
2013-03-22	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWNSTAA	STAA
2005-06-29	Supplementary search report drawn up and despatchedA4	A4
2005-01-26	Request for examination filed17P	17P
2005-01-26	Designated contracting statesAK	AK
2005-01-26	Request for extension of the european patentAX	AX
2004-12-10	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI