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(11)

EP 3 649 468 A1

(12)

(43) Date of publication: 13.05.2020 Bulletin 2020/20 (21) Application number: 17739877.3 (22) Date of filing: 03.07.2017

(51) International Patent Classification (IPC):  G01N 33/22(2006.01) G01N 31/12(2006.01) (86) International application number: PCT/EP2017/025192 (87) International publication number: WO 2019/007473 (10.01.2019 Gazette 2019/02)

(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 Designated Validation States: MA MD (71) Applicant: Linde Aktiengesellschaft 80331 München (DE)	(72) Inventors: WANING, Gerd 32107 Bad Salzuflen (DE) GRAF, Michael-Peter 81241 München (DE) (74) Representative: Gellner, Bernd  Linde AG Technology & Innovation Corporate Intellectual Property Dr.-Carl-von-Linde-Straße 6-14 82049 Pullach 82049 Pullach (DE)