(19)

(11)

EP 3 673 071 A1

(12)

(43) Date of publication: 01.07.2020 Bulletin 2020/27 (21) Application number: 18758957.7 (22) Date of filing: 24.08.2018

(51) International Patent Classification (IPC):  C12P 5/02(2006.01) C02F 11/04(2006.01) C12P 3/00(2006.01) (86) International application number: PCT/GB2018/052411 (87) International publication number: WO 2019/038561 (28.02.2019 Gazette 2019/09)

(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: 25.08.2017 EP 17188028 (71) Applicant: Clayton Hall Farm Biogas Products Ltd. Huddersfield, West Yorkshire HD8 9QE (GB)	(72) Inventor: GEMMELL, Neil Huddersfield Yorkshire HD8 9QE (GB) (74) Representative: Gill Jennings & Every LLP  The Broadgate Tower 20 Primrose Street London EC2A 2ES London EC2A 2ES (GB)