(19)

(11)

EP 0 892 672 A1

(12)

(43) Date of publication: 27.01.1999 Bulletin 1999/04 (21) Application number: 97917901.0 (22) Date of filing: 09.04.1997

(51) International Patent Classification (IPC):  G01N 35/ 02( . ) B01L 3/ 00( . ) B01F 5/ 06( . ) B01J 19/ 00( . ) C07B 61/ 00( . ) C40B 60/ 14( . ) (86) International application number: PCT/US1997/005841 (87) International publication number: WO 1997/037755 (16.10.1997 Gazette 1997/44)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 09.04.1996 US 19960630018 11.10.1996 US 19960730636 07.11.1996 US 19960744386 (71) Applicant: Sarnoff Corporation Princeton, NJ 08543-5300 (US)	(72) Inventors: DEMERS, Robert, Richard Cranbury, NJ 08512 (US) CHERUKURI, Satyam, Choudary Cranbury, NJ 08512 (US) LEVINE, Aaron, William Lawrenceville, NJ 08648 (US) O'MARA, Kerry, D. Florence, NJ 08518 (US) (74) Representative: Smith, Samuel Leonard, et al  J.A. Kemp & Co., 14 South Square, Gray's Inn London WC1R 5LX London WC1R 5LX (GB)