(19)

(11)

EP 4 441 442 A1

(12)

(43) Date of publication: 09.10.2024 Bulletin 2024/41 (21) Application number: 22901995.5 (22) Date of filing: 26.10.2022

(51) International Patent Classification (IPC):  F25B 1/02(2006.01) F04B 39/06(2006.01) F04F 13/00(2009.01) F25B 1/00(2006.01) H02K 9/20(2006.01) F25B 31/00(2006.01) F25B 11/00(2006.01) F25B 49/02(2006.01) (52) Cooperative Patent Classification (CPC): F04B 39/06; F04F 13/00; F25B 49/02; F25B 2600/2513; F25B 2700/21172; F25B 7/00; F25B 2700/1931; F25B 2400/13; F25B 2309/061; F25B 5/02; F25B 11/02; F25B 2400/05; F25B 2400/0751; F25B 9/008; F25B 1/10; F25B 2700/1933; F25B 2700/21173; F25B 2400/23; F04B 35/04; F04B 35/01; F04B 39/121 (86) International application number: PCT/US2022/047930 (87) International publication number: WO 2023/101771 (08.06.2023 Gazette 2023/23)

(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: 03.12.2021 US 202163285633 P (71) Applicant: Energy Recovery, Inc. San Leandro, California 94577 (US)	(72) Inventor: PATTOM, Matthew Joseph San Leandro, California 94577 (US) (74) Representative: Knöner, Gregor et al Kahler Käck Mollekopf Partnerschaft von Patentanwälten mbB Vorderer Anger 239 86899 Landsberg am Lech 86899 Landsberg am Lech (DE)