A METHOD OF ESTABLISHING A BOUNDARY FOR A MATERIAL IMPROVEMENT PROCESS ON AN AIRFOIL, AND AIRFOIL FOR A GAS TURBINE ENGINE.

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EP 2 943 656 B8

(12)	CORRECTED EUROPEAN PATENT SPECIFICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 B1)

(48)	Corrigendum issued on:
	14.04.2021 Bulletin 2021/15

(45)	Mention of the grant of the patent:
	17.02.2021 Bulletin 2021/07

(21)	Application number: 13872866.2

(22)	Date of filing: 06.11.2013

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International Patent Classification (IPC):

F01D 5/12^(2006.01)
F01D 25/00^(2006.01)
B24C 1/10^(2006.01)
G01M 99/00^(2011.01)
C21D 10/00^(2006.01)
C21D 11/00^(2006.01)

F01D 5/28^(2006.01)
F02C 9/00^(2006.01)
B23K 26/34^(2014.01)
G01N 3/00^(2006.01)
C21D 7/04^(2006.01)

(86)	International application number:
	PCT/US2013/068718

(87)	International publication number:
	WO 2014/116326 (31.07.2014 Gazette 2014/31)

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A METHOD OF ESTABLISHING A BOUNDARY FOR A MATERIAL IMPROVEMENT PROCESS ON AN AIRFOIL, AND AIRFOIL FOR A GAS TURBINE ENGINE.

VERFAHREN ZUR HERLEITUNG EINER BEGRENZUNG FÜR EIN MATERIALVERBESSERUNGSVERFAHREN AN EINER TURBINENSCHAUFEL UND SCHAUFEL FÜR EINE GASTURBINE

PROCÉDÉ DE DÉTERMINATION D'UNE LIMITE POUR UN TRAITEMENT D'AMÉLIORATION DE MATERIAU SUR UNE AUBE DE TURBINE, ET AUBE DE TURBINE.

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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Priority:

10.01.2013 US 201313738444

(43)	Date of publication of application:
	18.11.2015 Bulletin 2015/47

(73)	Proprietor: Raytheon Technologies Corporation
	Farmington, CT 06032 (US)

(72)	Inventors:
	DUESLER, Paul, D. Manchester, CT 06040 (US) FILEWICH, Paul Salem, CT 06420 (US)

(74)	Representative: Dehns
	St. Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)

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References cited: :

EP-A2- 1 138 431
US-A- 5 756 965
US-A1- 2009 313 823
US-B2- 7 217 102

US-A- 5 531 570
US-A- 6 075 593
US-A1- 2010 061 863

Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).