(19)

(11)

EP 0 464 023 A1

(12)

(43) Date of publication: 08.01.1992 Bulletin 1992/02 (21) Application number: 89910356.0 (22) Date of filing: 06.09.1989

(51) International Patent Classification (IPC):  A01N 25/ 28( . ) A61K 9/ 50( . ) A61K 9/ 00( . ) B01J 13/ 02( . ) (86) International application number: PCT/US1989/003845 (87) International publication number: WO 1990/002655 (22.03.1990 Gazette 1990/07)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 06.09.1988 US 19880240794 (71) Applicant: ENCAPSULATION SYSTEMS, INC Sharon Hill, PA 19079 (US)	(72) Inventors: REDDING, Bruce, K., Jr. Darby, PA 19023 (US) GARRISON, Walter, S. Fairless Hills, PA 19030 (US) SCHMUCKER, Arden, E. Alliance, OH 44601 (US) (74) Representative: Woodcraft, David Charles, et al  BROOKES & MARTIN High Holborn House 52/54 High Holborn London, WC1V 6SE London, WC1V 6SE (GB)