(19)

(11)

EP 4 503 984 A1

(12)

(43) Date of publication: 12.02.2025 Bulletin 2025/07 (21) Application number: 23784994.8 (22) Date of filing: 05.04.2023

(51) International Patent Classification (IPC):  A24F 40/40(2020.01) A24F 40/60(2020.01) A24F 40/70(2020.01) F21V 33/00(2006.01) A24F 40/20(2020.01) A24F 40/46(2020.01) B29D 99/00(2010.01) B29C 65/48(2006.01) A24D 1/20(2020.01) B29C 45/14(2006.01) (52) Cooperative Patent Classification (CPC): A24F 40/20; A24F 40/60 (86) International application number: PCT/KR2023/004595 (87) International publication number: WO 2023/195770 (12.10.2023 Gazette 2023/41)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 06.04.2022 KR 20220042848 17.08.2022 KR 20220102596 (71) Applicant: KT&G Corporation Daedeok-gu Daejeon 34337 (KR)	(72) Inventor: AN, Hwikyeong Seoul 02721 (KR) (74) Representative: Schornack, Oliver  Wuesthoff & Wuesthoff Patentanwälte und Rechtsanwalt PartG mbB Schweigerstraße 2 81541 München 81541 München (DE)