(19)

(11)

EP 1 251 955 A2

(12)

(88) Date of publication A3: 21.02.2002 (43) Date of publication: 30.10.2002 Bulletin 2002/44 (21) Application number: 00984476.2 (22) Date of filing: 14.12.2000

(51) International Patent Classification (IPC)7: B01J 19/00 (86) International application number: PCT/US0034/222 (87) International publication number: WO 0104/3870 (21.06.2001 Gazette 2001/25)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 15.12.1999 US 464500 (71) Applicant: MOTOROLA, INC. Schaumburg, IL 60196 (US)	(72) Inventors: SHI, Song Phoenix, AZ 85044 (US) ZHANG, Peiming Gilbert, AZ 85234 (US) MARACAS, George N. Phoenix, AZ 85048 (US) (74) Representative: Watson, Robert James  Mewburn EllisYork House23 Kingsway London WC2B 6HP London WC2B 6HP (GB)