(19)

(11)

EP 4 179 133 A1

(12)

(43) Date of publication: 17.05.2023 Bulletin 2023/20 (21) Application number: 21838455.0 (22) Date of filing: 09.07.2021

(51) International Patent Classification (IPC):  C25D 11/02(2006.01) C25D 11/26(2006.01) C25D 11/10(2006.01) (52) Cooperative Patent Classification (CPC): C23C 22/03 (86) International application number: PCT/US2021/041177 (87) International publication number: WO 2022/011313 (13.01.2022 Gazette 2022/02)

(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: 10.07.2020 US 202063050228 P (71) Applicant: Biological Dynamics, Inc. San Diego, California 92121 (US)	(72) Inventors: HARRIS, Tyler Lee San Diego, California 92121 (US) TURNER, Robert Paul San Diego, California 92121 (US) HINESTROSA SALAZAR, Juan Pablo San Diego, California 92121 (US) KRISHNAN, Rajaram San Diego, California 92121 (US) (74) Representative: Mewburn Ellis LLP  Aurora Building Counterslip Bristol BS1 6BX Bristol BS1 6BX (GB)