Inventor · disambiguated record
Friedrich Kupfer
Also filed as: KUPFER FRIEDRICH
8 granted patents·11 pending applications·107 citations·filing 2008–2025
83Inventor score
Top patents by PatentIndex Score
19 records- 0196US8287612B2Filter element and filter systemGILLENBERG ERIC·Filed 2012·Granted Oct 16, 2012·43 cites·18 claims
- 0295US8142533B2Filter element and filter systemGILLENBERG ERIC·Filed 2008·Granted Mar 27, 2012·58 cites·12 claims
- 0381US9101864B2Filter device having an annular filter elementMANN & HUMMEL GMBH·Filed 2013·Granted Aug 11, 2015·6 cites·14 claims
- 0478US2024382885A1Filter element, housing for a filter system, and filter system comprising a filter element and a housingMANN & HUMMEL GMBH·Filed 2024·Application pending·0 cites
- 0569US12064721B2Filter element and method for manufacturing a filter elementMANN & HUMMEL GMBH·Filed 2022·Granted Aug 20, 2024·0 cites·16 claims
- 0669US2025276265A1Gas filter systemMANN & HUMMEL GMBH·Filed 2025·Application pending·0 cites
- 0769US2025367585A1Filter element and filter systemMANN & HUMMEL GMBH·Filed 2025·Application pending·0 cites
- 0867US2025345734A1Filter element comprising at least two filter medium bodiesMANN & HUMMEL GMBH·Filed 2025·Application pending·0 cites
- 0966US12070707B2Filter element, housing for a filter system, and filter system comprising a filter element and a housingMANN & HUMMEL GMBH·Filed 2020·Granted Aug 27, 2024·0 cites·21 claims
- 1066US2025018616A1Casting shell for a casting device and method for manufacturing a filter elementMANN & HUMMEL GMBH·Filed 2024·Application pending·0 cites
- 1162US11959443B2Filter element and filter system having a filter elementMANN & HUMMEL GMBH·Filed 2020·Granted Apr 16, 2024·0 cites·14 claims
- 1259US2025214021A1Gas filter systemMANN & HUMMEL GMBH·Filed 2025·Application pending·0 cites
- 1359US2025214022A1Gas filter systemMANN & HUMMEL GMBH·Filed 2025·Application pending·0 cites
- 1459US2025242288A1Gas filter systemMANN & HUMMEL GMBH·Filed 2025·Application pending·0 cites
- 1559US2025214018A1Gas filter systemMANN & HUMMEL GMBH·Filed 2025·Application pending·0 cites
- 1659US2025214019A1Gas filter systemMANN & HUMMEL GMBH·Filed 2025·Application pending·0 cites
- 1759US2025214016A1Gas filter systemMANN & HUMMEL GMBH·Filed 2025·Application pending·0 cites
- 1857US9205358B2Filter elementMANN & HUMMEL GMBH·Filed 2014·Granted Dec 8, 2015·0 cites·18 claims
- 1948US12233369B2Air filter element having a circumferentially protruding clean air seal, filter housing and air filterMANN & HUMMEL GMBH·Filed 2020·Granted Feb 25, 2025·0 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →