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EP 4 346 459 A1

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(43) Date of publication: 10.04.2024 Bulletin 2024/15 (21) Application number: 23801284.3 (22) Date of filing: 09.08.2023

(51) International Patent Classification (IPC):  A24F 40/10(2020.01) A24F 40/46(2020.01) A24F 40/50(2020.01) A24F 40/44(2020.01) A24F 40/42(2020.01) A24F 40/30(2020.01) (52) Cooperative Patent Classification (CPC): A24F 40/10; A24F 40/44; A24F 40/46 (86) International application number: PCT/KR2023/011749 (87) International publication number: WO 2024/035113 (15.02.2024 Gazette 2024/07)

(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 (30) Priority: 09.08.2022 KR 20220099424 20.12.2022 KR 20220179789 (71) Applicant: KT&G Corporation Daedeok-guDaejeon 34337 (KR)	(72) Inventors: PARK, Ju Eon Seongnam-si, Gyeonggi-do 13597 (KR) KIM, Tae Hun Yongin-si, Gyeonggi-do 16925 (KR) YOON, Sung Wook Suwon-si, Gyeonggi-do 16534 (KR) JUNG, Hyung Jin Seoul 06993 (KR) HAN, Jung Ho Daejeon 34021 (KR) (74) Representative: Ter Meer Steinmeister & Partner  Patentanwälte mbB Nymphenburger Straße 4 80335 München 80335 München (DE)