(19)

(11)

EP 0 861 453 A1

(12)

(43) Date of publication: 02.09.1998 Bulletin 1998/36 (21) Application number: 96937910.0 (22) Date of filing: 07.11.1996

(51) International Patent Classification (IPC):  C03C 25/ 10( . ) (86) International application number: PCT/US1996/017800 (87) International publication number: WO 1997/018493 (22.05.1997 Gazette 1997/22)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 13.11.1995 US 19950558125 (71) Applicant: Lightguide Materials, Inc. Smyrna, GA 30082 (US)	(72) Inventor: LEVY, Alvin, C. Dunwoody, GA 30338 (US) (74) Representative: Leissler-Gerstl, Gabriele, et al  Patentanwältin, Arnulfstrasse 25 80335 München 80335 München (DE)