(19)

(11)

EP 4 107 797 A2

(12)

(88) Date of publication A3: 23.12.2021 (43) Date of publication: 28.12.2022 Bulletin 2022/52 (21) Application number: 21793403.3 (22) Date of filing: 19.02.2021

(51) International Patent Classification (IPC):  H01L 39/24(2006.01) H01F 6/06(2006.01) H01L 39/08(2006.01) C01B 32/205(2017.01) H01F 41/02(2006.01) H01L 39/12(2006.01) (52) Cooperative Patent Classification (CPC): H01L 39/121 (86) International application number: PCT/US2021/070173 (87) International publication number: WO 2021/217157 (28.10.2021 Gazette 2021/43)

(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: 21.02.2020 US 202062979520 P (71) Applicants: Wood, John A. Bethlehem, PA 18017 (US) Lilly, Paul J. Howey In The Hills, FL 34737 (US)	(72) Inventors: Wood, John A. Bethlehem, PA 18017 (US) Lilly, Paul J. Howey In The Hills, FL 34737 (US) (74) Representative: Ackermann, Joachim  Antoniterstraße 9 65929 Frankfurt am Main 65929 Frankfurt am Main (DE)