(19)
(11) EP 4 041 493 A1

(12)

(43) Date of publication:
17.08.2022 Bulletin 2022/33

(21) Application number: 20797179.7

(22) Date of filing: 02.10.2020
(51) International Patent Classification (IPC): 
B24B 31/06(2006.01)
(52) Cooperative Patent Classification (CPC):
B24B 31/062; B24B 31/064
(86) International application number:
PCT/IB2020/059264
(87) International publication number:
WO 2021/070024 (15.04.2021 Gazette 2021/15)
(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: 10.10.2019 US 201962913335 P

(71) Applicant: 3M Innovative Properties Company
Saint Paul, Minnesota 55133-3427 (US)

(72) Inventors:
  • KEEN, Polly H. R.
    Bracknell Berkshire RG12 8HT (GB)
  • HILL, Philip S.
    Bracknell Berkshire RG12 8HT (GB)
  • O'HARE, Jonathan J.
    Saint Paul, Minnesota 55133-3427 (US)
  • HENRY, Andrew R.
    Bracknell Berkshire RG12 8HT (GB)
  • PEARSON, Helen E.
    Bracknell Berkshire RG12 8HT (GB)

(74) Representative: De Clercq & Partners 
Edgard Gevaertdreef 10a
9830 Sint-Martens-Latem
9830 Sint-Martens-Latem (BE)

   


(54) METHOD OF MODIFYING A SURFACE OF A WORKPIECE