(19)

(11)

EP 3 965 594 A2

(12)

(88) Date of publication A3: 22.07.2021 (43) Date of publication: 16.03.2022 Bulletin 2022/11 (21) Application number: 20900028.0 (22) Date of filing: 07.12.2020

(51) International Patent Classification (IPC):  A24B 3/14(2006.01) A24D 1/20(2020.01) A24B 15/14(2006.01) A24F 40/46(2020.01) A24B 15/12(2006.01) A24D 1/04(2006.01) A24D 1/00(2020.01) (52) Cooperative Patent Classification (CPC): A24B 3/14; A24D 1/20 (86) International application number: PCT/KR2020/017752 (87) International publication number: WO 2021/118186 (17.06.2021 Gazette 2021/24)

(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: 10.12.2019 KR 20190164150 (71) Applicant: KT&G Corporation Daedeok-gu Daejeon 34337 (KR)	(72) Inventors: KIM, Young Joong Daejeon 34120 (KR) KI, Sung Jong Daejeon 34127 (KR) PARK, In Su Seoul 07529 (KR) LEE, John Tae Daejeon 34118 (KR) JUNG, Sun Hwan Daejeon 34337 (KR) JEOUNG, Eun Mi Daejeon 34061 (KR) (74) Representative: Ter Meer Steinmeister & Partner  Patentanwälte mbB Nymphenburger Straße 4 80335 München 80335 München (DE)