(19)

(11)

EP 0 198 826 A1

(12)

(43) Date of publication: 29.10.1986 Bulletin 1986/44 (21) Application number: 84904238.0 (22) Date of filing: 29.10.1984

(51) International Patent Classification (IPC):  G01N 33/ 53( . ) G01N 33/ 543( . ) G01N 33/ 536( . ) G01N 33/ 577( . ) (86) International application number: PCT/US1984/001737 (87) International publication number: WO 1986/002736 (09.05.1986 Gazette 1986/10)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (71) Applicant: EKS, INC. New York, NY 10040 (US)	(72) Inventors: EHRLICH, Paul, H. New York, NY 10032 (US) KRICHEVSKY, Alexander New York, NY 10040 (US) (74) Representative: Szczuka, Jan Tymoteusz  Marks & Clerk 19 Royal Exchange Square Glasgow G1 3AE Scotland Glasgow G1 3AE Scotland (GB)