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(11)

EP 4 061 473 A1

(12)

(43) Date of publication: 28.09.2022 Bulletin 2022/39 (21) Application number: 20895618.5 (22) Date of filing: 01.12.2020

(51) International Patent Classification (IPC):  A61N 1/04(2006.01) A61F 7/00(2006.01) H05B 6/02(2006.01) A61N 1/36(2006.01) H02J 50/10(2016.01) (52) Cooperative Patent Classification (CPC): A61F 2007/023; A61F 7/02; A61F 2007/0228; A61F 2007/0072; A61N 1/0484; A61N 1/0456; A61N 1/36034; A61N 1/36021; A61N 1/0452; A61N 1/0476; A61N 1/40; H02J 7/0048; H02J 50/12; H02J 50/20; H02J 50/40; H02J 2310/23 (86) International application number: PCT/US2020/062758 (87) International publication number: WO 2021/113272 (10.06.2021 Gazette 2021/23)

(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: 04.12.2019 US 201916703564 04.12.2019 US 201916703603 (71) Applicant: Hi-Dow IPHC, Inc. Saint Louis, MO 63131-1427 (US)	(72) Inventor: CHEN, Eric Ye Saint Louis, MO 63131 (US) (74) Representative: Hedges, Martin Nicholas et al AA Thornton IP LLP Octagon Point 5 Cheapside London EC2V 6AA London EC2V 6AA (GB)