(19)
(11) EP 3 225 319 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:
06.01.2021 Bulletin 2021/01

(45) Mention of the grant of the patent:
11.11.2020 Bulletin 2020/46

(21) Application number: 15863144.0

(22) Date of filing: 24.11.2015
(51) International Patent Classification (IPC): 
B21C 37/20(2006.01)
B21C 1/24(2006.01)
 B21C 3/16(2006.01)
(86) International application number:
PCT/JP2015/005823
(87) International publication number:
WO 2016/084361 (02.06.2016 Gazette 2016/22)

(54)

METHOD FOR MANUFACTURING RIFLED TUBE

VERFAHREN ZUR HERSTELLUNG EINES DRALLROHRS

PROCÉDÉ POUR LA FABRICATION DE TUBE NERVURÉ

(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: 25.11.2014 JP 2014238171

(43) Date of publication of application:
04.10.2017 Bulletin 2017/40

(73) Proprietors:
  • Nippon Steel Corporation
    Tokyo 100-8071 (JP)
  • Mitsubishi Power, Ltd.
    Yokohama-shi, Kanagawa 220-8401 (JP)

(72) Inventors:
  • NAKASHIMA, Takashi
    Tokyo 100-8071 (JP)
  • ISEDA, Atsuro
    Tokyo 100-8071 (JP)
  • MIKI, Takeshi
    Tokyo 100-8071 (JP)
  • OTSUKA, Shunichi
    Tokyo 100-8071 (JP)

(74) Representative: Zimmermann & Partner Patentanwälte mbB 
Josephspitalstr. 15
80331 München
80331 München (DE)


(56) References cited: : 
WO-A1-2009/081655
WO-A1-2009/081670
JP-A- 2005 221 153
US-A- 3 830 087
US-A1- 2005 229 667
 WO-A1-2009/081655
JP-A- H04 224 013
JP-U- S6 172 310
US-A1- 2005 229 667
   
       
    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).