(19)

(11)

EP 1 210 301 A1

(12)

(43) Date of publication: 05.06.2002 Bulletin 2002/23 (21) Application number: 00953819.0 (22) Date of filing: 03.08.2000

(51) International Patent Classification (IPC)7: C04B 18/08, C04B 20/02 (86) International application number: PCT/US0021/205 (87) International publication number: WO 0109/055 (08.02.2001 Gazette 2001/06)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 03.08.1999 US 146854 P 08.12.1999 US 169657 P (71) Applicant: YOUNG, Robert Douglas San Antonio, TX 78250 (US)	(72) Inventor: YOUNG, Robert Douglas San Antonio, TX 78250 (US) (74) Representative: Elsworth, Dominic Stephen  Hargreaves ElsworthRotterdam House116 Quayside Newcastle-upon-Tyne NE1 3DY Newcastle-upon-Tyne NE1 3DY (GB)