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(11)

EP 3 873 277 A1

(12)

(43) Date of publication: 08.09.2021 Bulletin 2021/36 (21) Application number: 20855894.0 (22) Date of filing: 10.12.2020

(51) International Patent Classification (IPC):  A24F 40/40(2020.01) A61M 15/06(2006.01) A24F 40/10(2020.01) (86) International application number: PCT/KR2020/018035 (87) International publication number: WO 2021/141251 (15.07.2021 Gazette 2021/28)

(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: 06.03.2020 KR 20200028582 06.01.2020 KR 20200001706 (71) Applicant: KT&G Corporation Daedeok-gu Daejeon 34337 (KR)	(72) Inventor: LEE, Moon Bong Seocho-gu, Seoul (KR) (74) Representative: Ter Meer Steinmeister & Partner  Patentanwälte mbB Nymphenburger Straße 4 80335 München 80335 München (DE)