EP0339874A3

Thin film head read recovery

Abstract

A thin film magnetic read/write head is conditioned by (i) causing the head to perform a first operation (e.g., a read operation), (ii) determining if the first operation was performed acceptably, and (iii) if not, causing the head to perform a second operation (e.g., a write operation) that is capable of increasing the likelihood that the head will be able to perform the first operation acceptably.

Term

Term ended

Projected expiry passed 20 April 2009, 17.4 years ago.

3 priority claims, no other members on record

This recordMember, by publication datePriority claim

Priority claims3

Priority claims
Document	Office	Kind	Date
188047	United States of America	–	1988-04-29
18804788	United States of America	A	1988-04-29
US19880188047	–	–	–

29 legal events, as 3 offices reported them to INPADOC

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	Event	Code	Office
2009-01-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2007-05-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2005-04-20	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2002-12-11	Gb: european patent ceased through non-payment of renewal feeCeasedGBPC	GBPC	EP
2002-04-20	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2002-01-01	European patent in force as of 2002-01-01IF02	IF02	GB
2001-04-03	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2001-02-02	Notification of lapseLapsedST	ST	FR
2001-01-02	Nl: lapsed or anulled due to non-payment of the annual feeLapsedNLV4	NLV4	EP
2000-12-29	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2000-11-01	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
1999-03-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
1999-03-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
1996-07-03	No opposition filedOpposition26N	26N	EP
1996-05-17	No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE	PLBE	EP
1996-05-17	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA	STAA	EP
1995-10-20	Fr: translation filedET	ET	EP
1995-10-11	It: translation for a ep patent filedITF	ITF	EP
1995-10-11	It: translation for a ep patent filedITF	ITF	EP
1995-08-17	Corresponds to:REF	REF	EP
1995-07-12	Designated contracting statesAK	AK	EP
1995-05-25	(expected) grantORIGINAL CODE: 0009210GRAA	GRAA	EP
1995-03-29	Party data changed (applicant data changed or rights of an application transferred)RAP1	RAP1	EP
1994-06-01	First examination report despatched17Q	17Q	EP
1992-02-26	Designated contracting statesAK	AK	EP
1992-01-07	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
1989-11-02	Request for examination filed17P	17P	EP
1989-11-02	Designated contracting statesAK	AK	EP
1989-09-16	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP

Thin film head read recovery

Abstract

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Priority claims3

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