(19)
(11) EP 3 224 208 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:
07.06.2023 Bulletin 2023/23

(45) Mention of the grant of the patent:
26.04.2023 Bulletin 2023/17

(21) Application number: 15863754.6

(22) Date of filing: 20.11.2015
(51) International Patent Classification (IPC): 
G01N 33/18(2006.01)
C02F 5/10(2023.01)
C02F 103/08(2006.01)
 G01N 21/64(2006.01)
C02F 103/02(2006.01)
(52) Cooperative Patent Classification (CPC):
G01N 33/18; G01N 33/1826; C02F 2103/023; C02F 2103/08; C02F 2303/08; C02F 2303/22; G01N 21/64; C02F 5/10
(86) International application number:
PCT/US2015/061911
(87) International publication number:
WO 2016/085819 (02.06.2016 Gazette 2016/22)

(54)

METHOD OF DECREASING SCALE IN AQUEOUS SYSTEMS

VERFAHREN ZUR MINDERUNG VON KESSELSTEIN IN WÄSSERIGEN SYSTEMEN

PROCÉDÉ DE RÉDUCTION DE TARTRE DANS DES SYSTÈMES AQUEUX

(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 US 201414553113

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

(73) Proprietor: Baker Hughes Holdings LLC
Houston, TX 77073 (US)

(72) Inventors:
  • FELIPE, Mary, Jane
    Sugar Land, TX 77498 (US)
  • SANDU, Corina
    Pearland, TX 77584 (US)
  • FULMER, David, N.
    Missouri City, TX 77459 (US)
  • GUO, Bing, Bing
    Missouri City, TX 77459 (US)

(74) Representative: Novagraaf Group 
Chemin de l'Echo 3
1213 Onex / Geneva
1213 Onex / Geneva (CH)


(56) References cited: : 
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US-A1- 2005 242 042
US-A1- 2011 253 628
US-A1- 2013 043 194
US-A1- 2013 234 063
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US-A1- 2008 145 549
US-A1- 2011 253 628
US-A1- 2013 043 194
   
       
    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).