(19)

(11)

EP 4 319 574 A1

(12)

(43) Date of publication: 14.02.2024 Bulletin 2024/07 (21) Application number: 22784981.7 (22) Date of filing: 07.04.2022

(51) International Patent Classification (IPC):  A24C 5/18(2006.01) A24D 1/04(2006.01) A24F 40/46(2020.01) A24F 40/20(2020.01) A24D 1/20(2020.01) A24D 3/02(2006.01) A24F 40/50(2020.01) (52) Cooperative Patent Classification (CPC): A24D 1/20 (86) International application number: PCT/KR2022/005010 (87) International publication number: WO 2022/216072 (13.10.2022 Gazette 2022/41)

(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: 07.04.2021 KR 20210045204 (71) Applicant: KT & G Corporation Daejeon 34337 (KR)	(72) Inventor: KIM, Tae Hun Yongin-si Gyeonggi-do 16925 (KR) (74) Representative: Ter Meer Steinmeister & Partner  Patentanwälte mbB Nymphenburger Straße 4 80335 München 80335 München (DE)