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(11)

EP 4 440 352 A1

(12)

(43) Date of publication: 09.10.2024 Bulletin 2024/41 (21) Application number: 22901682.9 (22) Date of filing: 25.11.2022

(51) International Patent Classification (IPC):  A24F 40/40(2020.01) A24F 40/485(2020.01) A24F 40/20(2020.01) A24F 40/42(2020.01) A24F 40/48(2020.01) A24F 40/10(2020.01) (52) Cooperative Patent Classification (CPC): A24F 40/20; A24F 40/42; A24F 40/10; A24F 40/485; A24F 40/30 (86) International application number: PCT/KR2022/018781 (87) International publication number: WO 2023/101324 (08.06.2023 Gazette 2023/23)

(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: 01.12.2021 KR 20210170208 16.05.2022 KR 20220059803 (71) Applicant: KT & G Corporation Daejeon 34337 (KR)	(72) Inventors: YOON, Sungwook Gyeonggi-do 16534 (KR) KIM, Taehun Yongin-si Gyeonggi-do 16925 (KR) PARK, Jueon Seoul 07630 (KR) JUNG, Hyungjin Seoul 06993 (KR) HAN, Jungho Daejeon 34021 (KR) (74) Representative: AWA Sweden AB  Matrosgatan 1 Box 5117 200 71 Malmö 200 71 Malmö (SE)