(19)

(11)

EP 3 215 313 A1

(12)

(43) Date of publication: 13.09.2017 Bulletin 2017/37 (21) Application number: 15808460.8 (22) Date of filing: 05.11.2015

(51) International Patent Classification (IPC):  B24C 1/04(2006.01) B24C 5/04(2006.01) (86) International application number: PCT/IB2015/058558 (87) International publication number: WO 2016/071866 (12.05.2016 Gazette 2016/19)

(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: 05.11.2014 CZ 20140574 (71) Applicant: Institute of Geonics AS CR, v.v.i. Ostrava-Poruba, 700 80 Ostrava (CZ)	(72) Inventor: RIHA, Zdenek 623 00 Brno (CZ) (74) Representative: Beetz & Partner mbB  Patentanwälte Steinsdorfstraße 10 80538 München 80538 München (DE)