(19)

(11)

EP 3 963 261 A1

(12)

(43) Date of publication: 09.03.2022 Bulletin 2022/10 (21) Application number: 20721233.3 (22) Date of filing: 28.04.2020

(51) International Patent Classification (IPC):  F23C 10/10(2006.01) F23C 10/26(2006.01) (52) Cooperative Patent Classification (CPC): F23C 10/10; F23C 10/26 (86) International application number: PCT/EP2020/061672 (87) International publication number: WO 2020/221708 (05.11.2020 Gazette 2020/45)

(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: 29.04.2019 EP 19171580 (71) Applicant: Improbed AB 20509 Malmö (SE)	(72) Inventors: ANDERSSON, Bengt-Åke 435 37 Mölnlycke (SE) GYLLÉN, Angelica 432 74 Träslövsläge (SE) (74) Representative: Glawe, Delfs, Moll  Partnerschaft mbB von Patent- und Rechtsanwälten Postfach 13 03 91 20103 Hamburg 20103 Hamburg (DE)