(19)

(11)

EP 0 862 647 A1

(12)

(43) Date of publication: 09.09.1998 Bulletin 1998/37 (21) Application number: 96941947.0 (22) Date of filing: 01.11.1996

(51) International Patent Classification (IPC):  G01N 33/ 50( . ) B01L 7/ 00( . ) C12M 1/ 36( . ) G01N 33/ 566( . ) B01J 19/ 00( . ) C12M 1/ 00( . ) C12Q 1/ 68( . ) G01N 35/ 04( . ) (86) International application number: PCT/US1996/017116 (87) International publication number: WO 1997/016561 (09.05.1997 Gazette 1997/20)

(84) Designated Contracting States: DE FR GB IT NL (30) Priority: 03.11.1995 US 19950009517P (71) Applicant: Sarnoff Corporation Princeton, NJ 08543-5300 (US)	(72) Inventors: ANDREVSKI, Zygmunt, M. Princeton, NJ 08540 (US) ROACH, William, R. Rocky Hill, NJ 08553 (US) SOUTHGATE, Peter, D. Monmouth Junction, NJ 8852 (US) ZANZUCCHI, Peter, J. Lawrenceville, NJ 08648 (US) (74) Representative: Pratt, Richard Wilson, et al  D. Young & Co, 21 New Fetter Lane London EC4A 1DA London EC4A 1DA (GB)