(19)
(11) EP 3 856 867 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:
03.08.2022 Bulletin 2022/31

(45) Mention of the grant of the patent:
15.06.2022 Bulletin 2022/24

(21) Application number: 19779384.7

(22) Date of filing: 16.09.2019
(51) International Patent Classification (IPC): 
C09K 8/528(2006.01)
(52) Cooperative Patent Classification (CPC):
C09K 8/528
(86) International application number:
PCT/EP2019/074695
(87) International publication number:
WO 2020/064399 (02.04.2020 Gazette 2020/14)

(54)

TREATMENT OF IRON SULPHIDE DEPOSITS

BEHANDLUNG VON EISENSULFIDABLAGERUNGEN

TRAITEMENT DE DÉPÔTS DE SULFURE DE FER

(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: 28.09.2018 US 201862738629 P

(43) Date of publication of application:
04.08.2021 Bulletin 2021/31

(73) Proprietor: RHODIA OPERATIONS
69003 Lyon (FR)

(72) Inventors:
  • LABARRE, Dominique
    92200 NEUILLY SUR SEINE (FR)
  • JONES, Christopher
    CHESLYN HAY STAFFORDSHIRE WS6 7BS (GB)

(74) Representative: Osha Liang 
2, rue de la Paix
75002 Paris
75002 Paris (FR)


(56) References cited: : 
WO-A1-02/08127
WO-A1-2005/026065
US-A1- 2010 099 596
 WO-A1-2004/083131
WO-A2-2005/074688
   
       
    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).