ULTRA-HARD CONSTRUCTIONS WITH IMPROVED ATTACHMENT STRENGTH - Patent 2893118

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EP 2 893 118 A1

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(43)	Date of publication:
	15.07.2015 Bulletin 2015/29

(21)	Application number: 13835409.7

(22)	Date of filing: 06.09.2013

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International Patent Classification (IPC):

E21B 10/46^(2006.01)

B24D 3/10^(2006.01)

(86)	International application number:
	PCT/US2013/058425

(87)	International publication number:
	WO 2014/039771 (13.03.2014 Gazette 2014/11)

(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
	Designated Extension States:
	BA ME

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Priority:

07.09.2012 US 201261698408 P
05.09.2013 US 201314019411

(71)	Applicant: Smith International, Inc.
	Houston, TX 77073 (US)

(72)	Inventor:
	BELNAP, J. Daniel Lindon, Utah 84042 (US)

(74)	Representative: Li, Boxi
	Schlumberger Cambridge Research Limited Intellectual Property Law High Cross Madingley Road Cambridge CB3 0EL Cambridge CB3 0EL (GB)

(54)	ULTRA-HARD CONSTRUCTIONS WITH IMPROVED ATTACHMENT STRENGTH