(19)

(11)

EP 0 267 282 A1

(12)

(43) Date of publication: 18.05.1988 Bulletin 1988/20 (21) Application number: 87906042.0 (22) Date of filing: 22.04.1987

(51) International Patent Classification (IPC):  B01J 20/ 281( . ) B01D 15/ 32( . ) B01J 20/ 286( . ) B01J 20/ 32( . ) G01N 30/ 88( . ) B01D 15/ 08( . ) B01D 15/ 36( . ) B01J 20/ 287( . ) B01J 41/ 08( . ) G01N 30/ 60( . ) (86) International application number: PCT/US1987/000896 (87) International publication number: WO 1987/006492 (05.11.1987 Gazette 1987/24)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 23.04.1986 US 19860855544 (71) Applicant: BATTELLE DEVELOPMENT CORPORATION Columbus, OH 43201-2693 (US)	(72) Inventor: LEE, Siu-Leung Columbus, OH 43220 (US) (74) Representative: Dousse, Blasco, et al  7, route de Drize CH-1227 Carouge/Genève CH-1227 Carouge/Genève (CH)