(19)

(11)

EP 0 844 921 A1

(12)

(43) Date of publication: 03.06.1998 Bulletin 1998/23 (21) Application number: 96932927.0 (22) Date of filing: 14.08.1996

(51) International Patent Classification (IPC):  B24C 11/ 00( . ) C08K 3/ 00( . ) (86) International application number: PCT/US1996/013110 (87) International publication number: WO 1997/006925 (27.02.1997 Gazette 1997/10)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 14.08.1995 US 19950002253P (71) Applicant: Foster-Miller ,Inc. Waltham, Massachusetts 02154 (US)	(72) Inventors: BLIZARD, Kent Framingham, MA 01701 (US) KOVAR, Robert Wrentham, MA 02093 (US) RUBIN, Leslie Newton, MA 02161 (US) TEVEROVSKY, Justyna Acton, MA 01718 (US) (74) Representative: Jones, Graham H.  Graham Jones & Company 77 Beaconsfield Road Blackheath London SE3 7LG London SE3 7LG (GB)