POLYCRYSTALLINE MATERIAL ELEMENT WITH IMPROVED WEAR RESISTANCE AND METHODS OF MANUFACTURE THEREOF - Patent 1488019

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EP 1 488 019 A1

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(43)	Date of publication:
	22.12.2004 Bulletin 2004/52

(21)	Application number: 03702763.8

(22)	Date of filing: 13.02.2003

(51)	International Patent Classification (IPC)⁷: C22C 26/00, C04B 35/52

(86)	International application number:
	PCT/GB2003/000642

(87)	International publication number:
	WO 2003/083148 (09.10.2003 Gazette 2003/41)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
	Designated Extension States:
	AL LT LV MK RO

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Priority:

28.03.2002 US 319157 P

(71)	Applicant: Camco International (UK) Limited
	Stonehouse,Gloucestershire GL10 3RQ (GB)

(72)	Inventors:
	GRIFFIN, Nigel Dennis Gloucestershire, GL10 3UB (GB) HUGHES, Peter Raymond Gloucestershire GL5 4SG (GB)

(74)	Representative: Bailey, Richard Alan
	Marks & Clerk,27 Imperial Square Cheltenham, GL50 1RQ Cheltenham, GL50 1RQ (GB)

(54)	POLYCRYSTALLINE MATERIAL ELEMENT WITH IMPROVED WEAR RESISTANCE AND METHODS OF MANUFACTURE THEREOF