(19)

(11)

EP 3 847 129 A1

(12)

(43) Date of publication: 14.07.2021 Bulletin 2021/28 (21) Application number: 19790029.3 (22) Date of filing: 09.09.2019

(51) International Patent Classification (IPC):  C01B 32/318(2017.01) (86) International application number: PCT/FI2019/050642 (87) International publication number: WO 2020/049226 (12.03.2020 Gazette 2020/11)

(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: 07.09.2018 FI 20185748 (71) Applicant: Fifth Innovation Oy 33500 Tampere (FI)	(72) Inventor: HILLI, Tuomo 33500 Tampere (FI) (74) Representative: Laine IP Oy  Porkkalankatu 24 00180 Helsinki 00180 Helsinki (FI)