(19)

(11)

EP 1 993 973 A1

(12)

(43) Date of publication: 26.11.2008 Bulletin 2008/48 (21) Application number: 07704858.5 (22) Date of filing: 20.02.2007

(51) International Patent Classification (IPC):  C04B 35/66(2006.01) B22D 41/02(2006.01) B22C 1/00(2006.01) F27D 1/00(2006.01) (86) International application number: PCT/FI2007/050088 (87) International publication number: WO 2007/096469 (30.08.2007 Gazette 2007/35)

(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: 20.02.2006 FI 20060160 (71) Applicant: Bet-Ker Oy 84100 Ylivieska (FI)	(72) Inventor: RUOTANEN, Kyösti FI-84100 Ylivieska (FI) (74) Representative: Laurinolli, Tapio Kullervo  Patenttitoimisto Tapio Laurinolli P.O. Box 258 90101 Oulu 90101 Oulu (FI)