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(11)

EP 3 941 558 A2

(12)

(88) Date of publication A3: 29.10.2020 (43) Date of publication: 26.01.2022 Bulletin 2022/04 (21) Application number: 20774182.8 (22) Date of filing: 18.03.2020

(51) International Patent Classification (IPC):  A61M 16/12(2006.01) (52) Cooperative Patent Classification (CPC): C25B 15/02; C25B 9/19; A61M 2205/3331; A61B 5/021; A61B 5/11; G16H 40/60; G16H 20/90; A61M 16/024; A61M 16/1005; A61M 2205/3584; A61M 2205/276; A61M 2205/52; A61B 5/4836; A61B 5/747; A61B 5/742; A61M 16/0051; A61M 2016/0027; A61M 16/10; A61M 16/0875; C02F 2001/4619; C25B 1/04; A61M 2205/583; C25B 9/73; A61B 5/002; A61M 2202/0208; A61B 5/0008; Y02E 60/36; A61M 2205/17; C02F 2103/026; A61M 2205/502; A61B 5/0077; A61B 5/024; A61M 2205/18; A61M 2230/06; A61M 2205/3592; A61M 2230/205; A61M 2205/3368; A61M 2205/3317; A61M 2205/3306; A61M 2230/30; A61M 2230/50; A61M 2205/8206; A61M 2205/3375; A61M 2205/581; A61M 2205/3553 (86) International application number: PCT/US2020/023353 (87) International publication number: WO 2020/191045 (24.09.2020 Gazette 2020/39)

(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: 20.03.2019 US 201916358961 (71) Applicant: Hsueh, Philip El Dorado Hills, CA 95762 (US)	(72) Inventors: WU, Raymond Milpitas, CA 95035 (US) HSUEH, Philip El Dorado Hills, CA 95762 (US) (74) Representative: Fresh IP  WeWork. 50-60 Station Road Cambridge CB1 2JH Cambridge CB1 2JH (GB)