(19)

(11)

EP 4 532 448 A2

(12)

(88) Date of publication A3: 14.03.2024 (43) Date of publication: 09.04.2025 Bulletin 2025/15 (21) Application number: 23832109.5 (22) Date of filing: 26.05.2023

(51) International Patent Classification (IPC):  C06B 45/32(2006.01) B01J 2/30(2006.01) B22F 9/02(2006.01) C09C 1/64(2006.01) B01J 2/06(2006.01) B22F 1/054(2022.01) C01G 1/02(2006.01) B22F 1/102(2022.01) (52) Cooperative Patent Classification (CPC): B22F 9/026; B22F 1/148; C22C 1/0416; B22F 1/054; B22F 1/0545; B22F 1/107 (86) International application number: PCT/US2023/023668 (87) International publication number: WO 2024/006012 (04.01.2024 Gazette 2024/01)

(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 (30) Priority: 26.05.2022 US 202263345949 P (71) Applicant: Helicon Chemical Company Orlando FL 32826 (US)	(72) Inventors: REID, David Cocoa, Florida 32922 (US) FISHER, Michael Springboro, Ohio 45066 (US) (74) Representative: Brothers, Christopher Michael  Lane IP Limited The Forum St. Paul's 33 Gutter Lane London EC2V 8AS London EC2V 8AS (GB)