(19)

(11)

EP 1 687 389 A2

(12)

(88) Date of publication A3: 02.03.2006 (43) Date of publication: 09.08.2006 Bulletin 2006/32 (21) Application number: 04811231.2 (22) Date of filing: 16.11.2004

(51) International Patent Classification (IPC):  C10B 49/04(2006.01) C10B 57/00(2006.01) C10B 49/06(2006.01) (86) International application number: PCT/US2004/038447 (87) International publication number: WO 2005/049530 (02.06.2005 Gazette 2005/22)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR Designated Extension States: AL HR LT LV MK YU (30) Priority: 17.11.2003 US 520509 P (71) Applicant: Entropic Technologies Corporation Clinton Township, MI 48038 (US)	(72) Inventor: JONES, Fred, L. Canton Township, MI 48187 (US) (74) Representative: Tillbrook, Christopher John  Tillbrook & Co 1 Mill Street Warwick CV34 4HB Warwick CV34 4HB (GB)