(19)

(11)

EP 1 931 594 A2

(12)

(88) Date of publication A3: 07.06.2007 (43) Date of publication: 18.06.2008 Bulletin 2008/25 (21) Application number: 06803564.1 (22) Date of filing: 14.09.2006

(51) International Patent Classification (IPC):  C01B 31/02(2006.01) B23B 27/14(2006.01) C01B 31/06(2006.01) B23P 15/28(2006.01) (86) International application number: PCT/US2006/035801 (87) International publication number: WO 2007/035394 (29.03.2007 Gazette 2007/13)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 15.09.2005 US 717227 P 13.09.2006 US 531389 (71) Applicant: Diamond Innovations, Inc. Worthington, Ohio, 46085 (US)	(72) Inventors: WEBB, Steven Worthington, Ohio 43085 (US) RAGHAVAN, Ram Westerville, Ohio 43081 (US) (74) Representative: D'Arcy, Julia  Murgitroyd & Company Scotland House 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)