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(11)

EP 0 576 596 A1

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(43) Date of publication: 05.01.1994 Bulletin 1994/01 (21) Application number: 92909864.0 (22) Date of filing: 29.01.1992

(51) International Patent Classification (IPC):  A23K 1/ 16( . ) A23K 1/ 18( . ) (86) International application number: PCT/US1992/000772 (87) International publication number: WO 1992/016218 (01.10.1992 Gazette 1992/25)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI NL SE (30) Priority: 22.03.1991 US 19910673986 (71) Applicants: LONZA INC. Fair Lawn New Jersey 07410 (US) THE UNIVERSITY OF GEORGIA RESEARCH FOUNDATION, INC. Athens, Georgia 30602 (US) KANSAS STATE UNIVERSITY RESEARCH FOUNDATION Manhattan, Kansas 66506 (US)	(72) Inventors: BLUM, Stephen, A. Des Moines, IA 50312 (US) GOODBAND, Robert, D. Manhattan, KS 66502 (US) NELSSEN, Jim, L. Manhattan, KS 66502 (US) NEWTON, Larry, G. Tifton, GA 31794 (US) (74) Representative: Ebbinghaus, Dieter, Dipl.-Ing., et al  Patentanwälte v. Füner, Ebbinghaus, Finck Mariahilfplatz 2 & 3 D-81541 München D-81541 München (DE)