(19)
(11) EP 4 816 572 A1

(12)

(43) Date of publication:
07.10.2026 Bulletin 2026/41

(21) Application number: 24895279.8

(22) Date of filing: 02.12.2024
(51) International Patent Classification (IPC): 
C22B 11/00(2006.01)
(52) Cooperative Patent Classification (CPC):
Y02P 10/20; C22B 11/04; C22B 3/44
(86) International application number:
PCT/CA2024/051608
(87) International publication number:
WO 2025/111719 (05.06.2025 Gazette 2025/23)
(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:
GE KH MA MD TN

(30) Priority: 01.12.2023 US 202363605284 P

(71) Applicant: Monnaie Royale Canadienne/Royal Canadian Mint
Ottawa, Ontario K1A 0G8 (CA)

(72) Inventors:
  • KAMPMAN, Raine
    Ottawa, Ontario K1A 0G8 (CA)
  • VIASUS PEREZ, Camilo Javier
    Montreal, Québec H3A 0G4 (CA)
  • YANG, Yiyi
    Ottawa, Ontario K1A 0G8 (CA)
  • APRAHAMIAN, Vicken
    Ottawa, Ontario K1A 0G8 (CA)
  • CHHIN, Danny
    Montreal, Québec H3A 0G4 (CA)
  • AUVRAY, Thomas
    Montreal, Québec H3A 0G4 (CA)
  • DO, Jean-Louis
    Montreal, Québec H3A 0G4 (CA)
  • FRISCIC, Tomislav
    Montreal, Québec H3A 0G4 (CA)
  • LUMB, Jean-Philip
    Montreal, Québec H3A 0G4 (CA)
  • MAUZEROLL, Janine
    Montreal, Québec H3A 0G4 (CA)
  • LI, Xianyao
    Ottawa, Ontario K1A 0G8 (CA)

(74) Representative: Fédit-Loriot 
22, rue du Général Foy
75008 Paris
75008 Paris (FR)

   


(54) MECHANO-CHEMICAL DISSOLUTION OF A NOBLE METAL IN AN AQUEOUS SOLUTION AND RECOVERY THEREFROM