(19)

(11)

EP 4 114 552 A1

(12)

(43) Date of publication: 11.01.2023 Bulletin 2023/02 (21) Application number: 20710878.8 (22) Date of filing: 06.03.2020

(51) International Patent Classification (IPC):  B01D 53/02(2006.01) B01D 46/00(2022.01) B01D 39/00(2006.01) B01D 53/04(2006.01) (52) Cooperative Patent Classification (CPC): B01D 53/025; B01D 53/0415; B01D 2253/102; B01D 2253/108; B01D 2253/304; B01D 2253/311; B01D 2257/402; B01D 2257/404; B01D 2258/012; B01D 2267/40; B01D 46/0036; Y02C 20/10; B01D 2239/1241; B01D 2239/1208; B01D 39/06; B01D 39/04; B01D 46/0013; B01D 46/58; B01D 46/12; B01D 50/60 (86) International application number: PCT/EP2020/056096 (87) International publication number: WO 2021/175447 (10.09.2021 Gazette 2021/36)

(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 (71) Applicant: Lippert KG 60329 Frankfurt am Main (DE)	(72) Inventor: LIPPERT, Jochen M. 41189 Mönchengladbach (DE) (74) Representative: Zimmermann & Partner Patentanwälte mbB  Postfach 330 920 80069 München 80069 München (DE)