(19)

(11)

EP 1 537 591 A1

(12)

(43) Date of publication: 08.06.2005 Bulletin 2005/23 (21) Application number: 03812413.7 (22) Date of filing: 23.06.2003

(51) International Patent Classification (IPC)7: H01J 7/24, H01T 23/00, H01T 19/00 (86) International application number: PCT/US2003/019651 (87) International publication number: WO 2004/051689 (17.06.2004 Gazette 2004/25)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 21.06.2002 US 175947 03.07.2002 US 187983 03.07.2002 US 188069 28.01.2003 US 352193 (71) Applicant: Kronos Advanced Technologies, Inc. Redmond, WA 98052 (US)	(72) Inventors: KRICHTAFOVITCH, Igor, A. Kirkland, WA 98033 (US) GOROBETS, Vladimir, L. Redmond, WA 98052 (US) (74) Representative: Carter, Stephen John et al Mewburn Ellis LLPYork House23 Kingsway London WC2B 6HP London WC2B 6HP (GB)