(19)

(11)

EP 3 781 718 A1

(12)

(43) Date of publication: 24.02.2021 Bulletin 2021/08 (21) Application number: 19716844.6 (22) Date of filing: 02.04.2019

(51) International Patent Classification (IPC):  C22B 3/28(2006.01) C22B 3/38(2006.01) C22B 7/04(2006.01) C22B 1/00(2006.01) C09K 11/01(2006.01) C22B 7/00(2006.01) C22B 59/00(2006.01) (86) International application number: PCT/EP2019/058219 (87) International publication number: WO 2019/201582 (24.10.2019 Gazette 2019/43)

(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: KH MA MD TN (30) Priority: 19.04.2018 EP 18168220 (71) Applicant: PAUL SCHERRER INSTITUT 5232 Villigen PSI (CH)	(72) Inventors: PATIL, Ajay Bhagwan 5200 Brugg (CH) STRUIS, Rudolf P. W. J. 5400 Baden (CH) SCHULER, Albert Josef 5312 Döttingen (CH) LUDWIG, Christian 5400 Baden (CH) (74) Representative: Fischer, Michael  Siemens AG Postfach 22 16 34 80506 München 80506 München (DE)