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(11)

EP 4 237 511 A1

(12)

(43) Date of publication: 06.09.2023 Bulletin 2023/36 (21) Application number: 21823687.5 (22) Date of filing: 29.10.2021

(51) International Patent Classification (IPC):  C10B 53/07(2006.01) B01J 8/00(2006.01) C10G 1/10(2006.01) (52) Cooperative Patent Classification (CPC): B01J 8/0015; C10B 7/06; C10B 7/10; C10B 53/07; C10B 57/06; C10G 1/10; C10G 2300/70; B01J 6/008; Y02P 20/143 (86) International application number: PCT/TH2021/000065 (87) International publication number: WO 2022/093131 (05.05.2022 Gazette 2022/18)

(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: 30.10.2020 SG 10202010859V (71) Applicant: Circular Plas Co., Ltd. Bangsue Bangkok, 10800 (TH)	(72) Inventor: SURIYE, Kongkiat Samut Prakan, 10270 (TH) (74) Representative: Viering, Jentschura & Partner mbB Patent- und Rechtsanwälte  Am Brauhaus 8 01099 Dresden 01099 Dresden (DE)