(19)

(11)

EP 1 951 642 A1

(12)

(43) Date of publication: 06.08.2008 Bulletin 2008/32 (21) Application number: 05858286.7 (22) Date of filing: 02.11.2005

(51) International Patent Classification (IPC):  C06B 47/00(2006.01) (86) International application number: PCT/US2005/039617 (87) International publication number: WO 2007/053143 (10.05.2007 Gazette 2007/19)

(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 (71) Applicant: Carbo* Prill, Inc. Evansville, IN 47708 (US)	(72) Inventors: WILZBACHER, Dennis, R. Evansville, IN 47708 (US) SCHIELE, Michael, L. Evansville, IN 47708 (US) HARMAN, John, C. Evansville, IN 47708 (US) (74) Representative: Smith, Julian Philip Howard  Compass Patents LLP 120 Bridge Road GB-Chertsey, Surrey KT16 8LA GB-Chertsey, Surrey KT16 8LA (GB)