EP0899682A3

High impedance transponder with improved backscatter modulator for electronic indentification system

Abstract

A transponder 20 for an electronic identification system is disclosed and claimed. The transponder is characterized in that it presents a high input impedance (>400Ω) at an input thereof which is directly connected to an antenna 22 with a matched high input impedance. The transponder is aimed at improving the voltage recovered on capacitor C2 from an interrogation signal and thus the operational range of the system. The modulator 30 of the transponder is arranged to backscatter modulate the interrogation signal at a modulation depth of less than 80%, preferably in the order of 30%. This also results in an improvement of the operational range of the system.

EP0899682A3, drawing sheet 1 — Sheet 1 of 1

Term

Term ended

Projected expiry passed 26 August 2018, 8.1 years ago.

1 sheet

Sheet 1

Every citation, both ways

Citations
Document	Relation	Office	Category	Cited during	Relevant claims
EP0492569A2	Cites	European Patent Office (EPO)	XA	Search report	9-11,14,15
EP0733914A1	Cites	European Patent Office (EPO)	A	Search report	1-7

17 members in 8 offices

This recordMember, by publication datePriority claim

Priority claims10

Priority claims
Document	Office	Kind	Date
9707689	South Africa	–	1997-08-27
977689	South Africa	A	1997-08-27
977689	South Africa	A	1997-08-27
9709218	South Africa	–	1997-10-15
979218	South Africa	A	1997-10-15
979218	South Africa	A	1997-10-15
9707689	–	–	–
9709218	–	–	–
ZA19970007689	–	–	–
ZA19970009218	–	–	–

Members17

Family members, oldest first
Document	Office	Kind
EP0899682A2	European Patent Office (EPO)	A2	1999-03-03
ZA987635B	South Africa	B	1999-04-20
JPH11174148A	Japan	A	1999-07-02
CN1224282A	China	A	1999-07-28
EP0899682A3This record	European Patent Office (EPO)	A3	2000-04-12
US6054925A	United States of America	A	2000-04-25
CN1123139C	China	C	2003-10-01
EP0899682B1	European Patent Office (EPO)	B1	2006-04-19
AT323913T	Austria	T	2006-05-15
ATE323913T1	Austria	T1	2006-05-15
DE69834226D1	Germany	D1	2006-05-24
EP1675042A2	European Patent Office (EPO)	A2	2006-06-28
EP1675042A3	European Patent Office (EPO)	A3	2006-07-12
ES2262212T3	Spain	T3	2006-11-16
DE69834226T2	Germany	T2	2007-06-21
JP2010101909A	Japan	A	2010-05-06
JP5595743B2	Japan	B2	2014-09-24

73 legal events, as 9 offices reported them to INPADOC

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Events

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	Event	Code	Office
2022-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2022-01-03	Announcement of lapse in spainLapsedFD2A	FD2A	ES
2018-11-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2018-10-25	Patent expired because of reaching the maximum lifetime of a patentExpiredMK	MK	BE
2018-10-15	ExpiryMK07	MK07	AT
2018-09-19	Patent expired after termination of 20 yearsExpiredPE20	PE20	GB
2018-08-29	Patent expired because of reaching the maximum lifetime of a patentExpiredMK	MK	NL
2018-08-26	Expiry of rightR071	R071	DE
2017-11-30	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-11-30	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-10-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-10-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-10-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-10-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-10-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-09-29	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-07-20	Fee paymentPLFP	PLFP	FR
2016-07-20	Fee paymentPLFP	PLFP	FR
2015-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2015-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2015-03-31	Patent ceasedCeasedPL	PL	CH
2014-11-10	Change of representativeR082	R082	DE
2014-11-10	Change of representativeR082	R082	DE
2014-08-27	Change of representativeR082	R082	DE
2014-08-27	Change of representativeR082	R082	DE
2014-08-27	Change of representativeR082	R082	DE
2013-10-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2013-10-17	Change of representativeR082	R082	DE
2013-10-17	Change of representativeR082	R082	DE
2013-10-17	Change of representativeR082	R082	DE
2013-09-24	Change of representativeR082	R082	DE
2013-09-24	Change of representativeR082	R082	DE
2013-09-24	Change of representativeR082	R082	DE
2008-10-31	Transmission of propertyTP	TP	FR
2008-04-23	Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)732E	732E	GB
2008-02-01	Nl: assignments of ep-patentsNLS	NLS	EP
2008-01-01	Transfer of patentPC2A	PC2A	ES
2007-12-31	Be: change of holder's addressBECA	BECA	EP
2007-12-31	Be: change of holder's addressBECA	BECA	EP
2007-12-31	Be: change of holderBECH	BECH	EP
2007-12-31	Be: change of holderBECH	BECH	EP
2007-12-31	AssignmentPUE	PUE	CH
2007-04-25	No opposition filedOpposition26N	26N	EP
2007-03-23	No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE	PLBE	EP
2007-03-23	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA	STAA	EP
2007-02-01	Transfer of patentPC2A	PC2A	ES
2007-01-26	Transmission of propertyTP	TP	FR
2006-12-15	Fr: translation filedET	ET	EP
2006-11-16	Definitive protectionFG2A	FG2A	ES
2006-11-08	Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)732E	732E	GB
2006-11-01	Nl: assignments of ep-patentsNLS	NLS	EP
2006-10-31	CorrectionADRESSE WURDE FEHLERHAFT ERFASSTPK	PK	CH
2006-10-31	CorrectionBERICHTIGUNG.PK	PK	CH
2006-10-13	AssignmentPUE	PUE	CH
2006-08-15	New agentNV	NV	CH
2006-05-24	Corresponds to:REF	REF	EP
2006-04-19	Designated contracting statesAK	AK	EP
2006-04-19	European patent grantedGrantedFG4D	FG4D	GB
2006-03-03	(expected) grantORIGINAL CODE: 0009210GRAA	GRAA	EP
2006-02-17	Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS	GRAS	EP
2005-06-08	Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOSNIGR1GRAP	GRAP	EP
2004-07-07	First examination report despatched17Q	17Q	EP
2000-12-20	Designation fees paidAT BE CH DE ES FR GB IT LI NLAKX	AKX	EP
2000-11-08	Request for examination filed17P	17P	EP
2000-04-12	Designated contracting statesAK	AK	EP
2000-04-12	Request for extension of the european patentAL;LT;LV;MK;RO;SIAX	AX	EP
2000-04-12	Information provided on ipc code assigned before grant7G 06K 19/07 A, 7G 06K 19/077 BRIC1	RIC1	EP
2000-02-25	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
1999-06-09	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
1999-06-09	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
1999-03-03	Designated contracting statesAK	AK	EP
1999-03-03	Request for extension of the european patentAL;LT;LV;MK;RO;SIAX	AX	EP
1999-01-15	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP

High impedance transponder with improved backscatter modulator for electronic indentification system

Abstract

Term

Priority claims10

Members17

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Titles3

Classification

Designated states25