Assignee
HYDAC FILTERTECHNIK GMBH
DE·78 granted patents·8 pending applications·751 citations·filing 1990–2022
Top patents by PatentIndex Score
86 records- 0193US5560824AFilter device with closing arrangement and key opening connectionHYDAC FILTERTECHNIK GMBH·Filed 1993·Granted Oct 1, 1996·106 cites·11 claims
- 0290US7459078B2Filter deviceHYDAC FILTERTECHNIK GMBH·Filed 2005·Granted Dec 2, 2008·72 cites·8 claims
- 0388US9919246B2Filter device with releasably securable end cap and sealing arrangementHYDAC FILTERTECHNIK GMBH·Filed 2016·Granted Mar 20, 2018·3 cites·10 claims
- 0485US10150064B2Filter apparatusHYDAC FILTERTECHNIK GMBH·Filed 2016·Granted Dec 11, 2018·3 cites·16 claims
- 0585US10005010B2Filter deviceHYDAC FILTERTECHNIK GMBH·Filed 2016·Granted Jun 26, 2018·3 cites·19 claims
- 0685US7018493B2Method for producing a connection interface in a filter element and device for producing the sameHYDAC FILTERTECHNIK GMBH·Filed 2002·Granted Mar 28, 2006·29 cites·15 claims
- 0784US7435347B2Filter device and parts thereof and a method for operating of the filter deviceHYDAC FILTERTECHNIK GMBH·Filed 2006·Granted Oct 14, 2008·15 cites·9 claims
- 0881US6949155B1Filter element comprising an embossed weld connection clip and device for producing the sameHYDAC FILTERTECHNIK GMBH·Filed 2000·Granted Sep 27, 2005·26 cites·20 claims
- 0981US6799687B1System and method for linear object reallocation in placeHYDAC FILTERTECHNIK GMBH·Filed 2000·Granted Oct 5, 2004·35 cites·11 claims
- 1080US9108128B2FilterHYDAC FILTERTECHNIK GMBH·Filed 2014·Granted Aug 18, 2015·4 cites·17 claims
- 1177US7997421B2Filtering apparatus and filter elementHYDAC FILTERTECHNIK GMBH·Filed 2005·Granted Aug 16, 2011·7 cites·12 claims
- 1276US10478760B2Filter element with a luminescent markerHYDAC FILTERTECHNIK GMBH·Filed 2015·Granted Nov 19, 2019·2 cites·16 claims
- 1376US7464723B2Non-return valveHYDAC FILTERTECHNIK GMBH·Filed 2005·Granted Dec 16, 2008·10 cites·12 claims
- 1476US7232158B2Fitting for formation of a fluid-conducting connectionHYDAC FILTERTECHNIK GMBH·Filed 2005·Granted Jun 19, 2007·10 cites·22 claims
- 1576US5736045AFilter element with support bodyHYDAC FILTERTECHNIK GMBH·Filed 1994·Granted Apr 7, 1998·55 cites·20 claims
- 1674US9393508B2Filter deviceHYDAC FILTERTECHNIK GMBH·Filed 2015·Granted Jul 19, 2016·2 cites·13 claims
- 1774US7022228B2Filter deviceHYDAC FILTERTECHNIK GMBH·Filed 2002·Granted Apr 4, 2006·21 cites·8 claims
- 1873US6695966B1Filter element provided with an ascending pipeHYDAC FILTERTECHNIK GMBH·Filed 2000·Granted Feb 24, 2004·21 cites·12 claims
- 1972US7926515B2Modular unitHYDAC FILTERTECHNIK GMBH·Filed 2005·Granted Apr 19, 2011·7 cites·7 claims
- 2071US10926202B2Filter device with coupling elementHYDAC FILTERTECHNIK GMBH·Filed 2016·Granted Feb 23, 2021·1 cites·17 claims
- 2171US9533244B2Filter deviceHYDAC FILTERTECHNIK GMBH·Filed 2014·Granted Jan 3, 2017·2 cites·14 claims
- 2271US6733666B1Filtering device, especially a suction return filterHYDAC FILTERTECHNIK GMBH·Filed 2000·Granted May 11, 2004·23 cites·8 claims
- 2370US2024149191A1Method for Forming a Filter MediumHYDAC FILTERTECHNIK GMBH·Filed 2022·Application pending·0 cites
- 2470US2024139654A1Method for Forming a Filter MediumHYDAC FILTERTECHNIK GMBH·Filed 2022·Application pending·0 cites
- 2568US5474269AConnection bracket clampHYDAC FILTERTECHNIK GMBH·Filed 1994·Granted Dec 12, 1995·36 cites·23 claims
- 2667US12589341B2Filter device and filter elementHYDAC FILTERTECHNIK GMBH·Filed 2022·Granted Mar 31, 2026·0 cites·18 claims
- 2767US7926327B2Apparatus for determining the filterability of fluids, in particular of transmission oilsHYDAC FILTERTECHNIK GMBH·Filed 2006·Granted Apr 19, 2011·2 cites·4 claims
- 2867US6117312AFilter bypass valve having adjustable spring biasing forceHYDAC FILTERTECHNIK GMBH·Filed 1996·Granted Sep 12, 2000·35 cites·14 claims
- 2966US5073260ASwitchover deviceHYDAC FILTERTECHNIK GMBH·Filed 1990·Granted Dec 17, 1991·31 cites·19 claims
- 3065US10119558B2Control apparatusHYDAC FILTERTECHNIK GMBH·Filed 2014·Granted Nov 6, 2018·2 cites·11 claims
- 3165US9791065B2Hydraulic valve deviceHYDAC FILTERTECHNIK GMBH·Filed 2014·Granted Oct 17, 2017·2 cites·26 claims
- 3264USRE46080EFiltering apparatus and filter elementHYDAC FILTERTECHNIK GMBH·Filed 2005·Granted Jul 26, 2016·2 cites·19 claims
- 3363US12257540B2Filter elementHYDAC FILTERTECHNIK GMBH·Filed 2021·Granted Mar 25, 2025·0 cites·21 claims
- 3463US10173154B2Filter device for fluidsHYDAC FILTERTECHNIK GMBH·Filed 2013·Granted Jan 8, 2019·2 cites·20 claims
- 3562US11033838B2Filter elementHYDAC FILTERTECHNIK GMBH·Filed 2012·Granted Jun 15, 2021·2 cites·8 claims
- 3662US7462282B2Filter element and method for the production thereofHYDAC FILTERTECHNIK GMBH·Filed 2003·Granted Dec 9, 2008·8 cites·10 claims
- 3761US8020709B2Filter elementHYDAC FILTERTECHNIK GMBH·Filed 2006·Granted Sep 20, 2011·1 cites·8 claims
- 3860US12263424B2Filter device together with filter elementHYDAC FILTERTECHNIK GMBH·Filed 2021·Granted Apr 1, 2025·0 cites·10 claims
- 3959US10166496B2Filter device and filter element provided thereforHYDAC FILTERTECHNIK GMBH·Filed 2015·Granted Jan 1, 2019·0 cites·4 claims
- 4059US7279091B2Filter deviceHYDAC FILTERTECHNIK GMBH·Filed 2002·Granted Oct 9, 2007·8 cites·20 claims
- 4158US7690245B2Device for testing at least one quality parameter of a fluidHYDAC FILTERTECHNIK GMBH·Filed 2004·Granted Apr 6, 2010·3 cites·33 claims
- 4258US7213622B2Venting device, particularly for fluid-storing reservoirs such as tanksHYDAC FILTERTECHNIK GMBH·Filed 2003·Granted May 8, 2007·4 cites·5 claims
- 4357US10617976B2Filter apparatusHYDAC FILTERTECHNIK GMBH·Filed 2017·Granted Apr 14, 2020·0 cites·20 claims
- 4457US5622624AFilter element with expandable metal jacketHYDAC FILTERTECHNIK GMBH·Filed 1994·Granted Apr 22, 1997·23 cites·8 claims
- 4556US10188969B2Filter deviceHYDAC FILTERTECHNIK GMBH·Filed 2016·Granted Jan 29, 2019·0 cites·20 claims
- 4655US12109514B2Filter device with an element receptacle having two or more degrees of freedom relative to different axesHYDAC FILTERTECHNIK GMBH·Filed 2019·Granted Oct 8, 2024·0 cites·23 claims
- 4755US7815054B2Filter deviceHYDAC FILTERTECHNIK GMBH·Filed 2004·Granted Oct 19, 2010·10 cites·15 claims
- 4855US6863758B1Method of assembling plastic filter element with plastic casingHYDAC FILTERTECHNIK GMBH·Filed 1997·Granted Mar 8, 2005·28 cites·16 claims
- 4955US2024050878A1Filter device and filter elementHYDAC FILTERTECHNIK GMBH·Filed 2022·Application pending·0 cites
- 5054US9908069B2Method of manufacturing a filter element and filter elementHYDAC FILTERTECHNIK GMBH·Filed 2014·Granted Mar 6, 2018·1 cites·13 claims
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