(19)

(11)

EP 3 934 788 A1

(12)

(43) Date of publication: 12.01.2022 Bulletin 2022/02 (21) Application number: 20766415.2 (22) Date of filing: 28.02.2020

(51) International Patent Classification (IPC):  B01D 46/10(2006.01) B01D 29/11(2006.01) B01D 45/02(2006.01) B04C 5/081(2006.01) B01D 27/08(2006.01) B01D 29/66(2006.01) B01D 46/54(2006.01) B04C 7/00(2006.01) (52) Cooperative Patent Classification (CPC): B01D 50/002; B01D 46/2411; B04C 5/081; B04C 7/00; B01D 46/02; B01D 45/12 (86) International application number: PCT/SE2020/050223 (87) International publication number: WO 2020/180229 (10.09.2020 Gazette 2020/37)

(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: 03.03.2019 SE 1900040 (71) Applicant: Scanmaskin Sverige AB 437 36 Lindome (SE)	(72) Inventor: HELLGREN, Ingvar 147 41 Tumba (SE) (74) Representative: Zacco Sweden AB  P.O. Box 5581 114 85 Stockholm 114 85 Stockholm (SE)