(19)
(11) EP 2 746 761 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:
21.08.2019 Bulletin 2019/34

(45) Mention of the grant of the patent:
15.05.2019 Bulletin 2019/20

(21) Application number: 12823776.5

(22) Date of filing: 15.08.2012
(51) International Patent Classification (IPC): 
G01N 27/83(2006.01)
(86) International application number:
PCT/JP2012/070723
(87) International publication number:
WO 2013/024858 (21.02.2013 Gazette 2013/08)

(54)

METHOD FOR MAGNETIC FLAW DETECTION AND MAGNETIC FLAW DETECTOR

VERFAHREN FÜR MAGNETISCHE RISSPRÜFUNG UND MAGNETISCHER RISSDETEKTOR

PROCÉDÉ DE DÉTECTION DES DÉFAUTS MAGNÉTIQUES ET DÉTECTEUR AFFÉRENT

(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 18.08.2011 JP 2011178915

(43) Date of publication of application:
25.06.2014 Bulletin 2014/26

(73) Proprietor: Nippon Steel Corporation
Tokyo 100-8071 (JP)

(72) Inventors:
  • SUZUMA, Toshiyuki
    Osaka-shi, Osaka 541-0041 (JP)
  • NAKAO, Yoshiyuki
    Osaka-shi, Osaka 541-0041 (JP)
  • SAKAMOTO, Makoto
    Osaka-shi, Osaka 541-0041 (JP)
  • OOTA, Yoshiyuki
    Osaka-shi, Osaka 541-0041 (JP)

(74) Representative: Zimmermann & Partner Patentanwälte mbB 
Postfach 330 920
80069 München
80069 München (DE)


(56) References cited: : 
DE-A1-102008 020 194
JP-A- H08 304 346
JP-A- 2011 002 409
US-A- 4 818 935
 JP-A- H07 253 412
JP-A- 2008 128 733
JP-U- H0 250 676
US-A1- 2011 163 741
   
  • Magnetic Analysis Corporation: "PRINCIPLES OF OPERATION Magnetic Flux Leakage", , 1 January 2006 (2006-01-01), XP055169815, Retrieved from the Internet: URL:http://www.mac-ndt.com/wp-content/uplo ads/2012/01/GI_5DS2010.pdf [retrieved on 2015-02-16]
   
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).