(19)

(11)

EP 0 843 649 A1

(12)

(43) Date of publication: 27.05.1998 Bulletin 1998/22 (21) Application number: 96928134.0 (22) Date of filing: 12.08.1996

(51) International Patent Classification (IPC):  C01B 11/ 06( . ) C02F 1/ 76( . ) C02F 1/ 50( . ) (86) International application number: PCT/US1996/013076 (87) International publication number: WO 1997/007062 (27.02.1997 Gazette 1997/10)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 11.08.1995 US 19950002141P 28.02.1996 US 19960608242 (71) Applicant: Girvan, Don H. St. Augustine, FL 32092 (US)	(72) Inventor: Girvan, Don H. St. Augustine, FL 32092 (US) (74) Representative: Patentanwälte Sternagel & Fleischer  Braunsberger Feld 29 51429 Bergisch Gladbach 51429 Bergisch Gladbach (DE)