(19)

(11)

EP 1 068 373 A1

(12)

(43) Date of publication: 17.01.2001 Bulletin 2001/03 (21) Application number: 99916615.0 (22) Date of filing: 09.04.1999

(51) International Patent Classification (IPC)7: C23F 1/08, G01N 31/16, G05D 21/02 (86) International application number: PCT/US9907/918 (87) International publication number: WO 9953/121 (21.10.1999 Gazette 1999/42)

(84) Designated Contracting States: BE DE GB NL (30) Priority: 09.04.1998 US 81240 P (71) Applicant: DJ Parker Company, Inc. D, Ontario, CA 91761 (US)	(72) Inventor: BALISKY, Todd Alan,Parker Systems D, Ontario, CA 91761 (US) (74) Representative: West, Alan Harry et al R.G.C. Jenkins & Co.26 Caxton Street London SW1H 0RJ London SW1H 0RJ (GB)