(19)

(11)

EP 1 774 138 A2

(12)

(88) Date of publication A3: 28.07.2005 (43) Date of publication: 18.04.2007 Bulletin 2007/16 (21) Application number: 04788510.8 (22) Date of filing: 08.09.2004

(51) International Patent Classification (IPC):  E21C 45/00(2006.01) B01D 53/26(2006.01) B01D 53/00(2006.01) B63B 35/44(2006.01) E21B 43/34(2006.01) B01D 19/00(2006.01) B63B 21/50(2006.01) (86) International application number: PCT/RO2004/000013 (87) International publication number: WO 2005/031116 (07.04.2005 Gazette 2005/14)

(84) Designated Contracting States: BG RO TR (30) Priority: 01.10.2003 RO 200300704 (71) Applicant: Baciu, Petru Bucharest, Sector 1 (RO)	(72) Inventor: Baciu, Petru Bucharest, Sector 1 (RO)