(19)
(11) EP 1 632 108 A2

(12)

(88) Date of publication A3:
15.09.2005

(43) Date of publication:
08.03.2006 Bulletin 2006/10

(21) Application number: 04754863.1

(22) Date of filing: 10.06.2004
(51) International Patent Classification (IPC): 
H05B 3/00(1968.09)
(86) International application number:
PCT/US2004/018392
(87) International publication number:
WO 2004/111540 (23.12.2004 Gazette 2004/52)
(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 PL PT RO SE SI SK TR
Designated Extension States:
AL HR LT LV MK

(30) Priority: 11.06.2003 US 477610 P

(71) Applicant: Huntington Alloys Corporation
Huntington, WV 25705-1771 (US)

(72) Inventors:
  • IYENGAR, Ram, K.
    Huntington, WV 25705 (US)
  • YANG, Wanhong
    Huntington, WV 25705 (US)
  • DEBARBADILLO, John, J.
    Barbousville, WV 25504 (US)

(74) Representative: Carstairs, James Campbell 
Forrester & Boehmert, Pettenkoferstrasse 20-22
80336 München
80336 München (DE)

   


(54) FURNACE WITH MULTIPLE HEATING ZONES AND METHOD FOR STRESS RELIEVING SUPERALLOY