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(11)

EP 4 463 532 A1

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(43) Date of publication: 20.11.2024 Bulletin 2024/47 (21) Application number: 23883880.9 (22) Date of filing: 30.03.2023

(51) International Patent Classification (IPC):  C11B 3/10(2006.01) B01J 20/20(2006.01) B01D 15/38(2006.01) (86) International application number: PCT/MY2023/050019 (87) International publication number: WO 2024/205390 (03.10.2024 Gazette 2024/40)

(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 (71) Applicant: Vulcan Photonics SDN. BHD. 59200 Kuala Lumpur (MY)	(72) Inventors: JAMALUDIN, Farah Hidayah Binti Johor 81110 (MY) KOO, Khong Nee Pulau Pinang 11060 (MY) EDWARD, Evianie Bingak Johor 80350 (MY) FONG, Mun Oon Pulau Pinang 11900 (MY) (74) Representative: Marks & Clerk LLP  15 Fetter Lane London EC4A 1BW London EC4A 1BW (GB)