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(11)

EP 3 762 651 A1

(12)

(43) Date of publication: 13.01.2021 Bulletin 2021/02 (21) Application number: 19722934.7 (22) Date of filing: 11.03.2019

(51) International Patent Classification (IPC):  F23J 15/00(2006.01) F01N 3/025(2006.01) F01N 1/14(2006.01) F01N 3/36(2006.01) F01N 3/10(2006.01) F23J 15/02(2006.01) F01N 3/20(2006.01) F01N 3/30(2006.01) F01N 3/08(2006.01) (86) International application number: PCT/FI2019/050203 (87) International publication number: WO 2019/170965 (12.09.2019 Gazette 2019/37)

(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: 09.03.2018 FI 20185222 (71) Applicant: VOCCI OY 00240 Helsinki (FI)	(72) Inventor: LYLYKANGAS, Reijo 00240 Helsinki (FI) (74) Representative: LEITZINGER OY  Tammasaarenkatu 1 00180 Helsinki 00180 Helsinki (FI)