EP0903875A3

Optical transmission line automatic power shut-down system

Abstract

A facility is provided which detects the loss of a high power signal in an optical transmission path and invokes a procedure which causes a transmitter connected to the fiber to reduce the power level at which it is transmitting optical signals over the fiber to a safe level.

EP0903875A3, drawing sheet 1 — Sheet 1 of 1

Term

Term ended

Projected expiry passed 8 September 2018, 8 years ago.

1 sheet

Sheet 1

Every citation, both ways

Citations
Document	Relation	Office	Category	Cited during	Relevant claims
EP0382243A2	Cites	European Patent Office (EPO)	XAY	Search report	1,2
EP0437162A2	Cites	European Patent Office (EPO)	YA	Search report	3-6,9-12
WO9724823A2	Cites	World Intellectual Property Organization (WIPO)	YA	Search report	9-11

5 members in 4 offices

This recordMember, by publication datePriority claim

Priority claims4

Priority claims
Document	Office	Kind	Date
932679	United States of America	–	1997-09-18
93267997	United States of America	A	1997-09-18
932679	–	–	–
US19970932679	–	–	–

Members5

Family members, oldest first
Document	Office	Kind
EP0903875A2	European Patent Office (EPO)	A2	1999-03-24
KR19990029977A	Republic of Korea	A	1999-04-26
JPH11205243A	Japan	A	1999-07-30
EP0903875A3This record	European Patent Office (EPO)	A3	2001-01-10
US6359708B1	United States of America	B1	2002-03-19

14 legal events, as 2 offices reported them to INPADOC

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Events

Legal events, newest first
	Event	Code	Office
2001-10-31	Designated country de not longer valid8566	8566	DE
2001-10-24	Application withdrawnWithdrawn18W	18W	EP
2001-09-26	Designation fees paidFR GB IT NL SEAKX	AKX	EP
2001-09-07	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION HAS BEEN WITHDRAWNSTAA	STAA	EP
2001-08-29	Request for examination filed17P	17P	EP
2001-01-10	Designated contracting statesAK	AK	EP
2001-01-10	Request for extension of the european patentAL;LT;LV;MK;RO;SIAX	AX	EP
2001-01-10	Information provided on ipc code assigned before grant7H 04B 10/152 A, 7H 04B 10/08 BRIC1	RIC1	EP
2000-11-24	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
1999-05-06	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
1999-05-06	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
1999-03-24	Designated contracting statesAK	AK	EP
1999-03-24	Request for extension of the european patentAL;LT;LV;MK;RO;SIAX	AX	EP
1999-02-05	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP