(19)

(11)

EP 1 254 422 A1

(12)

(43) Date of publication: 06.11.2002 Bulletin 2002/45 (21) Application number: 99973887.5 (22) Date of filing: 03.06.1999

(51) International Patent Classification (IPC)7: G06F 19/00 (86) International application number: PCT/US9912/428 (87) International publication number: WO 0007/5853 (14.12.2000 Gazette 2000/50)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: The Board of Regents of the University of Oklahoma Norman, OK 78019 (US)	(72) Inventors: HILDEBRAND, P., Lloyd Edmond, OK 73013 (US) FRANSEN, Stephen, R. Edmond, OK 73013 (US) SODERSTROM HOPPER, Gene, M. Oklahoma City, OK 73116 (US) (74) Representative: Ebner von Eschenbach, Jennifer et al Ladas & Parry,Dachauerstrasse 37 80335 München 80335 München (DE)