(19)
(11) EP 2 071 074 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:
15.08.2012 Bulletin 2012/33

(45) Mention of the grant of the patent:
20.06.2012 Bulletin 2012/25

(21) Application number: 08020329.2

(22) Date of filing: 21.11.2008
(51) International Patent Classification (IPC): 
D21B 1/02(2006.01)
 D21B 1/16(2006.01)

(54)

A method and apparatus to enhance fiber development by addition of treatment agent during mechanical pulping

Verfahren und Vorrichtung zur Verbesserung der Faserentwicklung durch Zugabe eines Behandlungsmittels beim mechanischen Aufschluss

Procédé et dispositif pour améliorer le développement de fibre par l'addition d'agent de traitement durant la mise en pâte mécanique

(84) Designated Contracting States:
DE FI NO SE

(30) Priority: 14.12.2007 US 13891 P
24.10.2008 US 257666

(43) Date of publication of application:
17.06.2009 Bulletin 2009/25

(73) Proprietor: Andritz Inc.
Glens Falls, NY 12801 (US)

(72) Inventors:
  • Aichinger, Johann
    4230 Pregarten (AT)
  • Sabourin, Marc
    Beavercreek, Ohio 45431 (US)
  • Hill, Jan
    28234 Tyringe (SE)
  • Grossalber, Johann
    2500 Baden (AT)

(74) Representative: HOFFMANN EITLE 
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München
81925 München (DE)


(56) References cited: : 
EP-A- 0 333 398
WO-A-91/06700
US-A- 3 023 140
 EP-A- 1 541 753
WO-A-2005/042830
US-B1- 6 267 841
   
       
    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).