(19)
(11) EP 4 522 788 A1

(12)

(43) Date of publication:
19.03.2025 Bulletin 2025/12

(21) Application number: 23728437.7

(22) Date of filing: 11.05.2023
(51) International Patent Classification (IPC): 
C25F 3/00(2006.01)
 C25F 3/26(2006.01)
(52) Cooperative Patent Classification (CPC):
C25F 3/00; C25F 3/26
(86) International application number:
PCT/IB2023/054867
(87) International publication number:
WO 2023/218390 (16.11.2023 Gazette 2023/46)
(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: 13.05.2022 IT 202200009899

(71) Applicant: Istituto Nazionale di Fisica Nucleare
00044 Frascati (RM) (IT)

(72) Inventors:
  • CHYHYRYNETS, Eduard
    35020 Legnaro (PD) (IT)
  • PIRA, Cristian
    35020 Legnaro (PD) (IT)
  • STIVANELLO, Fabrizio
    35020 Legnaro (PD) (IT)
  • AZZOLINI, Oscar
    35020 Legnaro (PD) (IT)
  • KEPPEL, Giorgio
    35020 Legnaro (PD) (IT)

(74) Representative: Metroconsult Srl 
Foro Bonaparte 51
20121 Milano
20121 Milano (IT)

   


(54) CHEMICAL SOLUTION SUITABLE FOR POLISHING NIOBIUM AND ALLOYS THEREOF BY PLASMA ELECTROPOLISHING