EP2236751A3

Turbine airfoil with leading edge impingement cooling

Abstract

An example gas turbine engine airfoil (60) includes an airfoil wall (64) establishing a cavity (84) that extends axially from an airfoil leading edge portion (68) to an airfoil trailing edge portion (72) and extends radially from an airfoil inner end (76) to an airfoil outer end (80). The cavity (84) is configured to receive a baffle (54) that is spaced from the airfoil leading edge portion (68) such that an impingement cooling area (92) is established between the airfoil leading edge portion (68) and the baffle (54) when the baffle (54) is received within the cavity (84). An array of nonuniformly distributed features (120) is disposed on the airfoil wall (64) within the impingement cooling area (92). The features (120) are configured to influence airflow within the impingement cooling area (92).

EP2236751A3, drawing sheet 1 — Sheet 1 of 1

Term

3.4 yearsto projected expiry

Projected expiry 1 March 2030, counted from filing; an application has no term until it is granted.

1 sheet

Sheet 1

Every citation, both ways

Citations
Document	Relation	Office	Cited during
EP0416542A1	Cites	European Patent Office (EPO)	Search report
EP0905353A1	Cites	European Patent Office (EPO)	Search report
GB1304678A	Cites	United Kingdom	Search report
EP1473439A2	Cites	European Patent Office (EPO)	Search report
EP1870561A2	Cites	European Patent Office (EPO)	Search report
EP1921268A1	Cites	European Patent Office (EPO)	Search report

5 members in 2 offices; this record represents the family

This recordMember, by publication datePriority claim

Priority claims5

Priority claims
Document	Office	Kind	Date
413649	United States of America	–	2009-03-30
41364909	United States of America	A	2009-03-30
41364909	United States of America	A	2009-03-30
413649	–	–	–
US20090413649	–	–	–

Members5

Family members, oldest first
Document	Office	Kind
US2010247284A1	United States of America	A1	2010-09-30
EP2236751A2	European Patent Office (EPO)	A2	2010-10-06
EP2236751A3This record	European Patent Office (EPO)	A3	2012-09-19
US8348613B2	United States of America	B2	2013-01-08
EP2236751B1	European Patent Office (EPO)	B1	2018-08-29

73 legal events, as 9 offices reported them to INPADOC

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Events

Legal events, newest first
	Event	Code	Office
2026-04-09	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2025-11-03	Change of applicant/patenteeR081	R081	DE
2025-04-28	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2025-04-25	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2025-04-11	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2023-06-28	Opt-out of the competence of the unified patent court (upc) registeredP01	P01	EP
2022-09-23	Change of applicant/patenteeR081	R081	DE
2022-09-23	Change of applicant/patenteeR081	R081	DE
2022-06-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-07-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-05-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-06-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-06-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-03-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-02-28	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-12-13	Lapsed because of non-payment of the annual feeLapsedMM	MM	BE
2019-11-29	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-10-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-10-31	Patent ceasedCeasedPL	PL	CH
2019-08-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-08-07	No opposition filedOpposition26N	26N	EP
2019-07-05	No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE	PLBE	EP
2019-07-05	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA	STAA	EP
2019-05-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-05-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-05-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-05-31	No opposition filed against granted patent, or epo opposition proceedings concluded without decisionGrantedR097	R097	DE
2019-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-02-28	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-02-28	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-02-28	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-02-15	Deletion acc. to par. 5 (withdrawal of the translation of the ep patent)MK05	MK05	AT
2019-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-10	Invalidated european patentMG4D	MG4D	LT
2019-01-02	Patent invalid in the netherlands as no translation has been filedMP	MP	NL
2018-10-04	Dpma publication of mentioned ep patent grantGrantedR096	R096	DE
2018-09-19	European patents granted designating irelandGrantedFG4D	FG4D	IE
2018-09-15	Reference to at number (ep patent validated in austria)REF	REF	AT
2018-08-31	European patent takes effect as a national patent in ch/liEP	EP	CH
2018-08-29	Designated contracting statesAK	AK	EP
2018-08-29	European patent grantedGrantedFG4D	FG4D	GB
2018-07-27	(expected) grantORIGINAL CODE: 0009210GRAA	GRAA	EP
2018-07-27	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE PATENT HAS BEEN GRANTEDSTAA	STAA	EP
2018-07-18	Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS	GRAS	EP
2018-04-04	Intention to grant announcedINTG	INTG	EP
2018-03-05	Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOSNIGR1GRAP	GRAP	EP
2018-03-05	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: GRANT OF PATENT IS INTENDEDSTAA	STAA	EP
2017-03-22	First examination report despatched17Q	17Q	EP
2017-02-17	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: EXAMINATION IS IN PROGRESSSTAA	STAA	EP
2016-10-26	Party data changed (applicant data changed or rights of an application transferred)RAP1	RAP1	EP
2013-05-01	Request for examination filed17P	17P	EP
2012-09-19	Designated contracting statesAK	AK	EP
2012-09-19	Request for extension of the european patentAX	AX	EP
2012-09-19	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2012-08-17	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
2010-10-06	Designated contracting statesAK	AK	EP
2010-10-06	Request for extension of the european patentAX	AX	EP
2010-09-03	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP

Turbine airfoil with leading edge impingement cooling

Abstract

Term

Priority claims5

Members5

Over the term

Events

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Titles3

Classification

Designated states2