EP0889620A3

Secure data communication method and system

Abstract

In data communication, data not requiring secrecy are transmitted and received via an open communication network whose security is low, while data requiring secrecy are transmitted and received via a closed communication network whose security is higher than that of the open communication network.

EP0889620A3, drawing sheet 1 — Sheet 1 of 1

Term

Term ended

Projected expiry passed 29 June 2018, 8.2 years ago.

1 sheet

Sheet 1

Every citation, both ways

Citations
Document	Relation	Office	Category	Cited during	Relevant claims
EP0814589A2	Cites	European Patent Office (EPO)	PX	Search report	1-10
GB2283154A	Cites	United Kingdom	A	Search report	1-10
US4996685A	Cites	United States of America	A	Search report	1-10

4 members in 3 offices

This recordMember, by publication datePriority claim

Priority claims4

Priority claims
Document	Office	Kind	Date
19324397	Japan	A	1997-07-03
19324397	Japan	–	1997-07-03
19324397	–	–	–
JP19970193243	–	–	–

Members4

Family members, oldest first
Document	Office	Kind
EP0889620A2	European Patent Office (EPO)	A2	1999-01-07
JPH1125046A	Japan	A	1999-01-29
US6178454B1	United States of America	B1	2001-01-23
EP0889620A3This record	European Patent Office (EPO)	A3	2001-01-31

10 legal events, as 2 offices reported them to INPADOC

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Events

Legal events, newest first
	Event	Code	Office
2002-07-04	Designated country de not longer valid8566	8566	DE
2002-05-29	Application deemed to be withdrawnWithdrawn18D	18D	EP
2002-04-12	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWNSTAA	STAA	EP
2001-10-17	Designation fees paidAKX	AKX	EP
2001-01-31	Designated contracting statesAK	AK	EP
2001-01-31	Request for extension of the european patentAL;LT;LV;MK;RO;SIAX	AX	EP
2000-12-15	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
1999-01-07	Designated contracting statesAK	AK	EP
1999-01-07	Request for extension of the european patentAL;LT;LV;MK;RO;SIAX	AX	EP
1998-11-20	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP