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EP 4 448 952 A1

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(43) Date of publication: 23.10.2024 Bulletin 2024/43 (21) Application number: 22908684.8 (22) Date of filing: 14.12.2022

(51) International Patent Classification (IPC):  F03B 13/06(2006.01) F02B 37/00(2006.01) F02M 35/10(2006.01) F03G 7/04(2006.01) F04F 5/16(2006.01) F02B 31/04(2006.01) F02M 26/10(2016.01) F03B 17/00(2006.01) F04F 5/10(2006.01) F15D 1/00(2006.01) (52) Cooperative Patent Classification (CPC): Y02E 10/20; F04F 5/10; F03G 7/04; F04F 5/42; F04F 5/46; F04F 5/24; F03G 7/0614; F05B 2240/133; F05B 2240/132; F03B 17/005 (86) International application number: PCT/US2022/081602 (87) International publication number: WO 2023/114879 (22.06.2023 Gazette 2023/25)

(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: 15.12.2021 US 202163265478 P 15.12.2021 US 202163265483 P 15.12.2021 US 202163265484 P 15.12.2021 US 202163265486 P 15.12.2021 US 202163265489 P 15.02.2022 US 202263268053 P 26.04.2022 WO PCT/US2022/026399 01.11.2022 US 202263381905 P 01.11.2022 US 202263381906 P 22.11.2022 WO PCT/US2022/050797 (71) Applicant: Zero Nox, Inc. Porterville, CA 93257 (US)

(72) Inventor: KERTON, James, Matthew Porterville, California 93257 (US) (74) Representative: Fuchs Patentanwälte Partnerschaft mbB  Tower 185 Friedrich-Ebert-Anlage 35-37 60327 Frankfurt am Main 60327 Frankfurt am Main (DE)