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(11)

EP 2 888 396 A1

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(43) Date of publication: 01.07.2015 Bulletin 2015/27 (21) Application number: 13831067.7 (22) Date of filing: 21.08.2013

(51) International Patent Classification (IPC):  D06F 39/08(2006.01) C02F 1/44(2006.01) D06F 39/02(2006.01) (86) International application number: PCT/US2013/055996 (87) International publication number: WO 2014/031753 (27.02.2014 Gazette 2014/09)

(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 Designated Extension States: BA ME (30) Priority: 22.08.2012 US 201213591411 (71) Applicant: Ecolab USA Inc. St. Paul, Minnesota 55102 (US)

(72) Inventors: KLOS, Terry J. Victoria, Minnesota 55386 (US) CARLSON, Brandon M. Farmington, Minnesota 55024 (US) KADLEC, Leonard J. Woodbury, Minnesota 55125 (US) KILAWEE, Patrick H. Hugo, Minnesota 55038 (US) WEEKS, Kirsten M. Minneapolis, Minnesota 55418 (US) (74) Representative: Godemeyer Blum Lenze Patentanwälte Partnerschaft mbB - werkpatent  An den Gärten 7 51491 Overath 51491 Overath (DE)