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(11)

EP 4 334 525 A1

(12)

(43) Date of publication: 13.03.2024 Bulletin 2024/11 (21) Application number: 22722911.9 (22) Date of filing: 03.05.2022

(51) International Patent Classification (IPC):  D21C 1/02(2006.01) D21C 3/02(2006.01) D21C 5/00(2006.01) D21C 1/04(2006.01) D21C 3/04(2006.01) D21H 11/12(2006.01) (52) Cooperative Patent Classification (CPC): D21H 11/12; D21C 5/00; D21C 3/02; D21C 3/04; D21C 1/02; D21C 1/04 (86) International application number: PCT/SG2022/050268 (87) International publication number: WO 2022/235212 (10.11.2022 Gazette 2022/45)

(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: 03.05.2021 SG 10202104539U (71) Applicant: Asia Pacific Resources International Holdings Ltd. HM11 Hamilton (BM)	(72) Inventors: GINTING, Eduward Singapore 048624 (SG) ANTES, Rudine Singapore 048624 (SG) H'NG, Yin Ying Singapore 048624 (SG) PANDITA, Surya Darma Singapore 048624 (SG) (74) Representative: Carpmaels & Ransford LLP  One Southampton Row London WC1B 5HA London WC1B 5HA (GB)