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EP 3 622 532 A1

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(43) Date of publication: 18.03.2020 Bulletin 2020/12 (21) Application number: 18798890.2 (22) Date of filing: 04.05.2018

(51) International Patent Classification (IPC):  G21B 1/19(2006.01) G21B 1/03(2006.01) H05H 1/12(2006.01) G21B 1/05(2006.01) G21B 1/11(2006.01) H05H 6/00(2006.01) (86) International application number: PCT/US2018/031244 (87) International publication number: WO 2018/208623 (15.11.2018 Gazette 2018/46)

(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: 08.05.2017 US 201715589902 08.05.2017 US 201715589913 08.05.2017 US 201715589886 08.05.2017 US 201715589905 09.05.2017 US 201762503680 P (71) Applicant: Alpha Ring International, Ltd. Grand Cayman KY1-1104 (KY)

(72) Inventor: WONG, Alfred Y. Los Angeles, California 90024 (US) (74) Representative: Nederlandsch Octrooibureau  P.O. Box 29720 2502 LS The Hague 2502 LS The Hague (NL)