(19)

(11)

EP 4 021 810 A1

(12)

(43) Date of publication: 06.07.2022 Bulletin 2022/27 (21) Application number: 20764047.5 (22) Date of filing: 24.08.2020

(51) International Patent Classification (IPC):  B64G 1/22(2006.01) (52) Cooperative Patent Classification (CPC): B64G 1/222 (86) International application number: PCT/EP2020/073607 (87) International publication number: WO 2021/037785 (04.03.2021 Gazette 2021/09)

(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: 29.08.2019 GB 201912417 (71) Applicant: University of Limerick Limerick V94 T9PX (IE)	(72) Inventors: MCHALE, Ciarán Limerick Castletroy Limerick, V94 T9PX (IE) WEAVER, Paul Limerick Castletroy Limerick, V94 T9PX (IE) TELFORD, Robert Limerick Castletroy Limerick, V94 T9PX (IE) (74) Representative: Appleyard Lees IP LLP  15 Clare Road Halifax HX1 2HY Halifax HX1 2HY (GB)