(19)

(11)

EP 4 511 542 A1

(12)

(43) Date of publication: 26.02.2025 Bulletin 2025/09 (21) Application number: 23792588.8 (22) Date of filing: 21.04.2023

(51) International Patent Classification (IPC):  E02D 7/06(2006.01) E02D 13/04(2006.01) E02D 5/80(2006.01) (52) Cooperative Patent Classification (CPC): E02D 7/22 (86) International application number: PCT/US2023/019421 (87) International publication number: WO 2023/205432 (26.10.2023 Gazette 2023/43)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 21.04.2022 US 202263333355 P (71) Applicant: Ojjo, Inc. San Rafael, California 94903 (US)	(72) Inventors: KRAFT, Steve Albany, California 94903 (US) ANDERSON, Tom Oakland, California 94602-1841 (US) WHITTEMORE, Sam Readfield, Maine 04355 (US) ARAUJO, Sergio Yuma, Arizona 85364-6620 (US) ARVIZU, Hector Yuma, Arizona 85364-6620 (US) (74) Representative: Herrero & Asociados, S.L.  Edificio Aqua - Agustín de Foxá, 4-10 28036 Madrid 28036 Madrid (ES)