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(11)

EP 1 868 770 A1

(12)

(43) Date of publication: 26.12.2007 Bulletin 2007/52 (21) Application number: 06719619.6 (22) Date of filing: 27.01.2006

(51) International Patent Classification (IPC):  B24D 11/00(2006.01) (86) International application number: PCT/US2006/002835 (87) International publication number: WO 2006/112909 (26.10.2006 Gazette 2006/43)

(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: 14.04.2005 US 671128 P (71) Applicant: Saint-Gobain Abrasives, Inc. Worcester, MA 01615-0138 (US)	(72) Inventors: GAETA, Anthony C. Lockport, NY 14094 (US) YOU, Xiaorong Shrewsbury, Massachusetts 01545 (US) RICE, William C. Medway, Massachusetts 02053 (US) (74) Representative: Zimmermann & Partner  Postfach 33 09 20 80069 München 80069 München (DE)