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(11)

EP 0 970 478 A1

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(43) Date of publication: 12.01.2000 Bulletin 2000/02 (21) Application number: 97941361.4 (22) Date of filing: 25.08.1997

(51) International Patent Classification (IPC)7: G21F 5/00, G21F 5/015 (86) International application number: PCT/US9714/921 (87) International publication number: WO 9808/737 (05.03.1998 Gazette 1998/09)

(84) Designated Contracting States: BE DE ES FR GB IT LU NL SE (30) Priority: 30.08.1996 US 25119 P 24.03.1997 US 822039 (71) Applicant: ICN Pharmaceuticals, Inc. Costa Mesa, CA 92626 (US)	(72) Inventor: SANDOR, Joseph Balboa Island, CA 92662 (US) (74) Representative: Viering, Jentschura & Partner  Postfach 22 14 43 80504 München 80504 München (DE) (56) References cited: :