(19)

(11)

EP 0 812 170 A2

(12)

(43) Date of publication: 17.12.1997 Bulletin 1997/51 (21) Application number: 96902338.0 (22) Date of filing: 09.02.1996

(51) International Patent Classification (IPC):  A61F 13/ 15( . ) (86) International application number: PCT/GB1996/000298 (87) International publication number: WO 1996/024317 (15.08.1996 Gazette 1996/37)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE (30) Priority: 09.02.1995 GB 19950002477 09.11.1995 GB 19950022976 05.12.1995 GB 19950024828 (71) Applicant: Ecoprogress International Limited Atlanta, GA 30350-1735 (US)	(72) Inventor: BROWN, Malcolm, David Norfolk IP26 5DT (GB) (74) Representative: Barrett-Major, Julie Diane, et al  SANDERSON & CO. European Patent Attorneys 34, East Stockwell Street Colchester Essex CO1 1ST Colchester Essex CO1 1ST (GB)