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(11)

EP 4 146 837 A1

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(43) Date of publication: 15.03.2023 Bulletin 2023/11 (21) Application number: 21727734.2 (22) Date of filing: 04.05.2021

(51) International Patent Classification (IPC):  C22C 21/08(2006.01) C22F 1/00(2006.01) C22F 1/047(2006.01) C22C 21/06(2006.01) (52) Cooperative Patent Classification (CPC): C22C 21/08; C22F 1/047; C22F 1/002; C22C 21/06 (86) International application number: PCT/US2021/030676 (87) International publication number: WO 2021/226103 (11.11.2021 Gazette 2021/45)

(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: 04.05.2020 US 202063019564 P (71) Applicant: Nanoal LLC Ashland, MA 01721 (US)	(72) Inventors: FLORES, Francisco U. Ashland, Massachusetts 01721 (US) DORN, Joshua P. Waltham, Massachusetts 02453 (US) VO, Nhon Q. Winchester, Massachusetts 01890 (US) (74) Representative: Cooley (UK) LLP  22 Bishopsgate London EC2N 4BQ London EC2N 4BQ (GB)