Inventor · disambiguated record
Klaus-Dieter Ruhland
Also filed as: RUHLAND KLAUS · RUHLAND KLAUS-DIETER
57 granted patents·7 pending applications·627 citations·filing 2006–2025
98Inventor score
Files withMANN & HUMMEL GMBH53GILLENBERG ERIC4KAUFMANN MICHAEL2RUHLAND KLAUS-DIETER2ACKERMANN STEFFEN1
Top patents by PatentIndex Score
64 records- 0197US7658777B2Filter element and filter system for the intake air of an internal combustion engineMANN & HUMMEL GMBH·Filed 2007·Granted Feb 9, 2010·70 cites·11 claims
- 0296US10337471B2Filter and filter cartridgeMANN & HUMMEL GMBH·Filed 2016·Granted Jul 2, 2019·9 cites·28 claims
- 0396US10245541B2Air filter system, air filter element and method for exchanging an air filter elementMANN & HUMMEL GMBH·Filed 2016·Granted Apr 2, 2019·14 cites·12 claims
- 0496US8287612B2Filter element and filter systemGILLENBERG ERIC·Filed 2012·Granted Oct 16, 2012·43 cites·18 claims
- 0596US8152876B2Filter element having V-sealGILLENBERG ERIC·Filed 2008·Granted Apr 10, 2012·87 cites·7 claims
- 0696US8147576B2Filter element having serrated sealGILLENBERG ERIC·Filed 2008·Granted Apr 3, 2012·71 cites·9 claims
- 0795US9254457B2Air filter system, air filter element and method for exchanging an air filter elementMANN & HUMMEL GMBH·Filed 2013·Granted Feb 9, 2016·25 cites·14 claims
- 0895US8142533B2Filter element and filter systemGILLENBERG ERIC·Filed 2008·Granted Mar 27, 2012·58 cites·12 claims
- 0994US9358489B2Air filter system, air filter element and method for exchanging an air filter elementMANN & HUMMEL GMBH·Filed 2013·Granted Jun 7, 2016·19 cites·16 claims
- 1094US9205361B2Air filter element, air filter housing and air filter systemMANN & HUMMEL GMBH·Filed 2013·Granted Dec 8, 2015·18 cites·9 claims
- 1193US11311890B2Filter deviceMANN & HUMMEL GMBH·Filed 2019·Granted Apr 26, 2022·6 cites·16 claims
- 1293US8920530B2Filter element and filter systemRUHLAND KLAUS-DIETER·Filed 2010·Granted Dec 30, 2014·28 cites·9 claims
- 1392US10961957B2Filter and filter cartridgeMANN & HUMMEL GMBH·Filed 2019·Granted Mar 30, 2021·4 cites·13 claims
- 1492US10337472B2Filter and filter cartridgeMANN & HUMMEL GMBH·Filed 2016·Granted Jul 2, 2019·4 cites·25 claims
- 1592US8784522B2Air filter system and filter elementMANN & HUMMEL GMBH·Filed 2013·Granted Jul 22, 2014·17 cites·13 claims
- 1691US10865749B2Filter and filter cartridgeMANN & HUMMEL GMBH·Filed 2019·Granted Dec 15, 2020·3 cites·30 claims
- 1791US9511317B2Air filter system and air filter element for an air filter systemMANN & HUMMEL GMBH·Filed 2014·Granted Dec 6, 2016·8 cites·17 claims
- 1891US7442221B2Filter elementMANN & HUMMEL GMBH·Filed 2006·Granted Oct 28, 2008·27 cites·8 claims
- 1990US9587598B2Filter housing and filter assemblyMANN & HUMMEL GMBH·Filed 2014·Granted Mar 7, 2017·8 cites·23 claims
- 2090US9457308B2Filter element and filter system with a filter elementMANN & HUMMEL GMBH·Filed 2014·Granted Oct 4, 2016·7 cites·14 claims
- 2190US8591621B2Filter systemRUHLAND KLAUS-DIETER·Filed 2009·Granted Nov 26, 2013·21 cites·10 claims
- 2289US10159923B2Hollow filter element, grip device of a hollow filter element, and filter device with at least one hollow filter elementMANN & HUMMEL GMBH·Filed 2016·Granted Dec 25, 2018·5 cites·13 claims
- 2389US8216332B2Filter with a filter housingKOPEC EDVARD·Filed 2006·Granted Jul 10, 2012·31 cites·10 claims
- 2485US10799823B2Housing main part of a filter housing, filter system, and pre-separator module of a filter systemMANN & HUMMEL GMBH·Filed 2017·Granted Oct 13, 2020·3 cites·9 claims
- 2584US9233333B2Filter elementMANN & HUMMEL GMBH·Filed 2014·Granted Jan 12, 2016·3 cites·18 claims
- 2684US8523973B2Filter element for fluid filtration, in particular for intake air of internal combustion enginesACKERMANN STEFFEN·Filed 2012·Granted Sep 3, 2013·7 cites·11 claims
- 2783US10954899B2Filter and filter cartridgeMANN & HUMMEL GMBH·Filed 2019·Granted Mar 23, 2021·1 cites·13 claims
- 2882US9205360B2Filter element and housing for a filter elementKAUFMANN MICHAEL·Filed 2012·Granted Dec 8, 2015·6 cites·7 claims
- 2981US9457307B2Filter system with filter elementMANN & HUMMEL GMBH·Filed 2014·Granted Oct 4, 2016·4 cites·19 claims
- 3079US12330103B2Filter element, element frame of a filter element, filter bellows of a filter element, filter housing, and filterMANN & HUMMEL GMBH·Filed 2023·Granted Jun 17, 2025·0 cites·10 claims
- 3179US11273402B2Filter element, element frame of a filter element, filter bellows of a filter element, filter housing, and filterMANN & HUMMEL GMBH·Filed 2018·Granted Mar 15, 2022·1 cites·11 claims
- 3278US2024252965A1Particle Discharge Device, Filter Assembly, and MethodMANN & HUMMEL GMBH·Filed 2024·Application pending·0 cites
- 3377US8864865B2Air filter element, filter housing and filter arrangementKAUFMANN MICHAEL·Filed 2012·Granted Oct 21, 2014·3 cites·12 claims
- 3476US11697084B2Filter element, element frame of a filter element, filter bellows of a filter element, filter housing, and filterMANN & HUMMEL GMBH·Filed 2022·Granted Jul 11, 2023·0 cites·10 claims
- 3575US9108137B2Filter arrangement and method for producing a filter receptacleMANN & HUMMEL GMBH·Filed 2013·Granted Aug 18, 2015·3 cites·12 claims
- 3674US11092118B2Filter housing and filterMANN & HUMMEL GMBH·Filed 2018·Granted Aug 17, 2021·1 cites·7 claims
- 3773US12345224B2Muffler and filter systemMANN & HUMMEL GMBH·Filed 2023·Granted Jul 1, 2025·0 cites·15 claims
- 3873US12292021B2Filter element and air cleaner assemblyMANN & HUMMEL GMBH·Filed 2023·Granted May 6, 2025·0 cites·17 claims
- 3973US11719202B2Filter and filter cartridgeMANN & HUMMEL GMBH·Filed 2020·Granted Aug 8, 2023·0 cites·31 claims
- 4072US9233331B2Air filter elementMANN & HUMMEL GMBH·Filed 2014·Granted Jan 12, 2016·1 cites·13 claims
- 4171US9314721B2Filter system with sealMANN & HUMMEL GMBH·Filed 2014·Granted Apr 19, 2016·2 cites·5 claims
- 4270US9212636B2FilterMANN & HUMMEL GMBH·Filed 2013·Granted Dec 15, 2015·2 cites·14 claims
- 4369US2025367585A1Filter element and filter systemMANN & HUMMEL GMBH·Filed 2025·Application pending·0 cites
- 4468US11918944B2Particle discharge device, filter assembly, and methodMANN & HUMMEL GMBH·Filed 2021·Granted Mar 5, 2024·0 cites·9 claims
- 4568US11311891B2Multi-cyclone separator of a multi-stage fluid filter for cleaning gaseous fluid and multi-stage fluid filterMANN & HUMMEL GMBH·Filed 2019·Granted Apr 26, 2022·0 cites·13 claims
- 4668US2025058260A1Filter system and filter elementMANN & HUMMEL GMBH·Filed 2024·Application pending·0 cites
- 4764US10138852B2Air filter elementMANN & HUMMEL GMBH·Filed 2017·Granted Nov 27, 2018·0 cites·18 claims
- 4863US10293294B2Air filter system and air filter element for an air filter systemMANN & HUMMEL GMBH·Filed 2016·Granted May 21, 2019·0 cites·15 claims
- 4962US12415153B2Filter element and filter systemMANN & HUMMEL GMBH·Filed 2023·Granted Sep 16, 2025·0 cites·16 claims
- 5062US11725615B2Secondary filter element and filter arrangementMANN & HUMMEL GMBH·Filed 2021·Granted Aug 15, 2023·0 cites·11 claims
Showing the top 50 of 64 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →