(19)
(11) EP 4 025 384 A1

(12)

(43) Date of publication:
13.07.2022 Bulletin 2022/28

(21) Application number: 20861237.4

(22) Date of filing: 02.09.2020
(51) International Patent Classification (IPC): 
B24B 31/112(2006.01)
B24B 1/00(2006.01)
(52) Cooperative Patent Classification (CPC):
B24B 31/112
(86) International application number:
PCT/US2020/049053
(87) International publication number:
WO 2021/046119 (11.03.2021 Gazette 2021/10)
(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: 04.09.2019 US 201962895861 P

(71) Applicant: QED Technologies International, Inc.
Aurora, IL 60504 (US)

(72) Inventors:
  • MESSNER, William
    Aurora, Illinois 60504 (US)
  • DAVIS, Johnathan
    Aurora, Illinois 60504 (US)
  • MALONEY, Christopher
    Aurora, Illinois 60504 (US)

(74) Representative: Barker Brettell LLP 
100 Hagley Road Edgbaston
Birmingham B16 8QQ
Birmingham B16 8QQ (GB)

   


(54) HIGH REMOVAL RATE MAGNETORHEOLOGICAL FINISHING HEAD