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EP 4 432 866 A1

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(43) Date of publication: 25.09.2024 Bulletin 2024/39 (21) Application number: 22895966.4 (22) Date of filing: 11.11.2022

(51) International Patent Classification (IPC):  A24D 1/20(2020.01) A24D 3/02(2006.01) A24D 3/06(2006.01) A24D 1/04(2006.01) A24D 1/00(2020.01) A24D 3/04(2006.01) A24B 15/28(2006.01) (52) Cooperative Patent Classification (CPC): A24D 3/17; A24D 3/048; A24B 15/282; A24B 15/283; A24D 3/061; A24D 3/10 (86) International application number: PCT/KR2022/017690 (87) International publication number: WO 2023/090759 (25.05.2023 Gazette 2023/21)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 16.11.2021 KR 20210157195 (71) Applicant: KT & G Corporation Daejeon 34337 (KR)	(72) Inventors: PARK, Insu Daejeon 34128 (KR) KWON, Chan Min Daejeon 34128 (KR) KIM, Ick Joong Daejeon 34128 (KR) (74) Representative: Ter Meer Steinmeister & Partner  Patentanwälte mbB Nymphenburger Straße 4 80335 München 80335 München (DE)