(19)
(11) EP 1 329 531 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
19.09.2007 Bulletin 2007/38

(45) Mention of the grant of the patent:
07.02.2007 Bulletin 2007/06

(21) Application number: 03007332.4

(22) Date of filing: 21.09.1998
(51) International Patent Classification (IPC): 
C22C 38/24(2006.01)
C22C 38/22(2006.01)
 C22C 38/26(2006.01)

(54)

Ferritic heat-resistant steel and method for producing it

Ferritischer,wärmebeständiger Stahl und Verfahren zur Herstellung

Acier ferritique réfractaire et procédé de fabrication

(84) Designated Contracting States:
BE DE

(30) Priority: 22.09.1997 JP 25647997
22.09.1997 JP 25648097
22.09.1997 JP 25648197

(43) Date of publication of application:
23.07.2003 Bulletin 2003/30

(62) Application number of the earlier application in accordance with Art. 76 EPC:
98307629.0 / 0903421

(73) Proprietor: NATIONAL RESEARCH INSTITUTE FOR METALS
Tsukuba-shi, Ibaraki (JP)

(72) Inventors:
  • Fujitsuna, Noboyuki
    Tsukuba-shi Ibaraki (JP)
  • Abe, Fujio
    Tsukuba-shi Ibaraki (JP)
  • Itagaki, Takehiko
    Tsukuba-shi Ibaraki (JP)
  • Igarashi, Masaaki
    Tsukuba-shi Ibaraki (JP)
  • Muneki, Masakazu
    Tsukuba-shi Ibaraki (JP)
  • Kimura, Kazuhiro
    Tsukuba-shi Ibaraki (JP)
  • Kushima, Hideaki
    Tsukuba-shi Ibaraki (JP)

(74) Representative: Matthews, Derek Peter 
Frank B. Dehn & Co. St Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)


(56) References cited: : 
EP-A- 0 199 046
US-A- 3 847 600
US-A- 4 018 569
 GB-A- 2 079 787
US-A- 3 932 174
US-A- 4 405 369
   
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Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).