(19)

(11)

EP 3 478 447 A1

(12)

(43) Date of publication: 08.05.2019 Bulletin 2019/19 (21) Application number: 17821237.9 (22) Date of filing: 29.06.2017

(51) International Patent Classification (IPC):  B24D 3/28(2006.01) B24D 18/00(2006.01) B24D 7/04(2006.01) (86) International application number: PCT/US2017/039949 (87) International publication number: WO 2018/005767 (04.01.2018 Gazette 2018/01)

(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 Designated Validation States: MA MD (30) Priority: 29.06.2016 US 201662356252 P (71) Applicants: Saint-Gobain Abrasives, Inc. Worcester, MA 01615 (US) Saint-Gobain Abrasifs 78700 Conflans-Sainte-Honorine (FR)	(72) Inventors: CASTAGNA, Alicia M. Cambridge, MA 02138 (US) SAHLIN, Katherine, M. Old Orchard Beach, ME 04064 (US) (74) Representative: Zimmermann & Partner Patentanwälte mbB  Postfach 330 920 80069 München 80069 München (DE)