(19)

(11)

EP 1 778 583 A2

(12)

(43) Date of publication: 02.05.2007 Bulletin 2007/18 (21) Application number: 05758924.4 (22) Date of filing: 12.07.2005

(51) International Patent Classification (IPC):  C01B 3/00(2006.01) (86) International application number: PCT/IL2005/000739 (87) International publication number: WO 2006/006164 (19.01.2006 Gazette 2006/03)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK YU (30) Priority: 12.07.2004 US 586869 P (71) Applicant: Aytec Avnim Ltd. 76303 Rehovot (IL)	(72) Inventors: YOGEV, Amnon 76303 Rehovot (IL) GAMZON, Eliyahu 76800 Beit Oved (IL) (74) Representative: Vossius & Partner  Siebertstrasse 4 81675 München 81675 München (DE)