(19)

(11)

EP 4 100 436 A1

(12)

(43) Date of publication: 14.12.2022 Bulletin 2022/50 (21) Application number: 21775941.4 (22) Date of filing: 19.03.2021

(51) International Patent Classification (IPC):  C07K 16/20(2006.01) C07K 16/40(2006.01) (52) Cooperative Patent Classification (CPC): A01F 12/26 (86) International application number: PCT/US2021/023140 (87) International publication number: WO 2021/194873 (30.09.2021 Gazette 2021/39)

(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: 21.03.2020 US 202016826194 (71) Applicant: Robertson, Brian G. Dallas, TX 75244 (US)	(72) Inventor: Robertson, Brian G. Dallas, TX 75244 (US) (74) Representative: Tomkinson, Alexandra  Bailey Walsh & Co LLP 1 York Place Leeds, LS1 2DR Leeds, LS1 2DR (GB)