(19)
(11) EP 1 492 907 A1

(12)

(43) Date of publication:
05.01.2005 Bulletin 2005/01

(21) Application number: 03746651.3

(22) Date of filing: 08.04.2003
(51) International Patent Classification (IPC)7C25D 5/48, C25D 17/00, C25D 7/12, C25F 3/30, C25F 7/00
(86) International application number:
PCT/US2003/010725
(87) International publication number:
WO 2003/087436 (23.10.2003 Gazette 2003/43)
(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: 08.04.2002 US 370929 P
08.04.2002 US 370956 P
08.04.2002 US 370955 P
08.04.2002 US 370919 P
14.04.2002 US 372542 P
14.04.2002 US 372567 P
14.04.2002 US 372566 P
21.06.2002 US 390460 P

(71) Applicant: ACM Research, Inc.
Fremont, CA 94538 (US)

(72) Inventors:
  • WANG, Hui
    Fremont, CA 94539 (US)
  • NUCH, Voha
    San, Jose, CA 95122 (US)
  • GUTMAN, Felix
    San Jose, CA 95136 (US)
  • AFNAN, Muhammed
    Fremont, CA 94539 (US)
  • CHOKSHI, Himanshu, J.
    Fremont, CA 94536 (US)
  • VAN KERKWYK, Mark, Jacobus
    Hayward, CA 94544 (US)
  • KOEHLER, Damon, L.
    Fremont, CA 94538 (US)
  • YIH, Peihaur
    Boonton, NJ 07005 (US)
  • NGUYEN, My, Hoang
    San Jose, CA 95127 (US)
  • CHANG, Ru, Kao
    Mountain View, CA 94040 (US)
  • HO, Frederick
    San Jose, CA 95123 (US)

(74) Representative: Vleck, Jan Montagu 
Reddie & Grose,16 Theobalds Road
London WC1X 8PL
London WC1X 8PL (GB)

   


(54) ELECTROPOLISHING AND/OR ELECTROPLATING APPARATUS AND METHODS