Assignee
HENGST SE
DE·24 granted patents·12 pending applications·13 citations·filing 2011–2025
Top patents by PatentIndex Score
36 records- 0192US12053727B2Oil filter cartridgeHENGST SE·Filed 2023·Granted Aug 6, 2024·1 cites·19 claims
- 0292US10357728B2Filter having a filter bypass valve, and filter insert thereforHENGST SE·Filed 2014·Granted Jul 23, 2019·11 cites·37 claims
- 0382US12589339B2Oil filter cartridgeHENGST SE·Filed 2024·Granted Mar 31, 2026·0 cites·7 claims
- 0479US12214302B2Oil filter cartridgeHENGST SE·Filed 2023·Granted Feb 4, 2025·0 cites·17 claims
- 0576US12465926B2Cabin air filter with polarisationHENGST SE·Filed 2024·Granted Nov 11, 2025·0 cites·19 claims
- 0675US12358003B2Cabin air filter device and componentsHENGST SE·Filed 2024·Granted Jul 15, 2025·0 cites·17 claims
- 0775US10539052B2Oil filter cartridge and housing for an oil filter cartridgeHENGST SE·Filed 2018·Granted Jan 21, 2020·1 cites·16 claims
- 0870US11033842B2Filter insert for a filter having a filter bypass valve, and a method of using the filter insertHENGST SE·Filed 2019·Granted Jun 15, 2021·0 cites·17 claims
- 0959US12478901B2Fluid filter and housing for the fluid filterHENGST SE·Filed 2025·Granted Nov 25, 2025·0 cites·14 claims
- 1059US2024123377A1Filter insert for insertion into a filter housingHENGST SE·Filed 2022·Application pending·0 cites
- 1157US10801377B2Method for protecting a rotation separator from icing and a rotation separatorHENGST SE·Filed 2018·Granted Oct 13, 2020·0 cites·12 claims
- 1257US2025276329A1Active field polarized media air cleaning deviceHENGST SE·Filed 2025·Application pending·0 cites
- 1356US12244041B2Method for the continuous treatment of multiphase fluid flowsHENGST SE·Filed 2022·Granted Mar 4, 2025·0 cites·10 claims
- 1455US2026005269A1Semipermeable membrane for membrane humidifierHENGST SE·Filed 2023·Application pending·0 cites
- 1553USRE50552EFilter with a replaceable filter insertHENGST SE·Filed 2011·Granted Aug 26, 2025·0 cites·46 claims
- 1653US2026077280A1Filter insert with improved filter performance under operating conditionsHENGST SE·Filed 2023·Application pending·0 cites
- 1753US2024291002A1Recovery system and method for recovering a recirculation flow exiting a fuel cellHENGST SE·Filed 2022·Application pending·0 cites
- 1852US11440027B2Method for operating a centrifugal separatorHENGST SE·Filed 2018·Granted Sep 13, 2022·0 cites·19 claims
- 1952US10576401B2Fluid filter with a valve unitHENGST SE·Filed 2016·Granted Mar 3, 2020·0 cites·13 claims
- 2050US2024229338A9Microplastic filter for a washing machineHENGST SE·Filed 2023·Application pending·0 cites
- 2150US2024307800A1Filter cartridge for insertion in a filter housing of a fluid filterHENGST SE·Filed 2022·Application pending·0 cites
- 2248US12128343B2Filter arrangement and methodHENGST SE·Filed 2019·Granted Oct 29, 2024·0 cites·17 claims
- 2348US11491425B2Fluid filter and filter insert for the sameHENGST SE·Filed 2016·Granted Nov 8, 2022·0 cites·12 claims
- 2447US11453015B2Rotor for a centrifugal separator and centrifugal separatorHENGST SE·Filed 2019·Granted Sep 27, 2022·0 cites·20 claims
- 2546US11519309B2Separator plate for an oil mist separator and oil mist separatorHENGST SE·Filed 2022·Granted Dec 6, 2022·0 cites·13 claims
- 2646US2025186917A1Method for producing a filter elementHENGST SE·Filed 2023·Application pending·0 cites
- 2744US11428130B2Pressure-limiting valveHENGST SE·Filed 2020·Granted Aug 30, 2022·0 cites·13 claims
- 2844US2022054959A1Method and device for determining at least one operating parameter of a filter or a filter cartridge arranged in the filter, and filter cartridgeHENGST SE·Filed 2019·Application pending·0 cites
- 2943US10463996B2Filter which can be attached to a connection flange and filter insert for said filterHENGST SE·Filed 2016·Granted Nov 5, 2019·0 cites·16 claims
- 3042US11596883B2Fluid filter with a valve unit and filter element for use in the fluid filterHENGST SE·Filed 2016·Granted Mar 7, 2023·0 cites·15 claims
- 3142US2019030466A1Fluid filter comprising a housing and a central vertical pipe that forms a fluid outletHENGST SE·Filed 2016·Application pending·0 cites
- 3241US12564805B2Filter insert for a fuel filter with three-stage filtrationHENGST SE·Filed 2021·Granted Mar 3, 2026·0 cites·14 claims
- 3340US2024142054A1Gas management apparatus, and method for conditioning anode gas of a fuel cellHENGST SE·Filed 2022·Application pending·0 cites
- 3436US2026009347A1Breather system for a crankcaseHENGST SE·Filed 2023·Application pending·0 cites
- 3535US10427170B2Rotor of a centrifugal separator with axially assembled elements clamped by a springHENGST SE·Filed 2016·Granted Oct 1, 2019·0 cites·21 claims
- 3631US11130079B2Filter insert of a fuel filter, filter insert, and fuel filterHENGST SE·Filed 2017·Granted Sep 28, 2021·0 cites·16 claims
Join the waitlist — get patent alerts
Get an alert when HENGST SE files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →