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(11)

EP 3 268 320 A1

(12)

(43) Date of publication: 17.01.2018 Bulletin 2018/03 (21) Application number: 16709771.6 (22) Date of filing: 11.03.2016

(51) International Patent Classification (IPC):  C03B 19/08(2006.01) A01K 1/015(2006.01) C03C 1/02(2006.01) C03C 11/00(2006.01) C03C 1/00(2006.01) C03B 1/02(2006.01) (86) International application number: PCT/EP2016/055273 (87) International publication number: WO 2016/146518 (22.09.2016 Gazette 2016/38)

(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: MA MD (30) Priority: 13.03.2015 GB 201504307 (71) Applicants: Bob Martin (UK) Ltd. Yatton, Somerset BS49 4BS (GB) Imperial Innovations Limited Greater London SW7 2PG (GB)	(72) Inventors: CHEESEMAN, Christopher Robert London SW7 2BB (GB) FERRANDIZ MAS, Veronica London SW7 2BB (GB) GREAVES, Rosemary Irene Whincup Somerset BS22 6RW (GB) MADAN, Savi Somerset BS22 6RW (GB) (74) Representative: Hucker, Charlotte Jane  Kilburn & Strode LLP Lacon London 84 Theobalds Road London WC1X 8NL London WC1X 8NL (GB)