Inventor
KUPFER FRIEDRICH
DE8 patents
⚠️ This page may combine multiple inventors who share the name “KUPFER FRIEDRICH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MANN & HUMMEL GMBH
6 patentsUS9101864B2Aug 11, 2015
Filter device having an annular filter element
MANN & HUMMEL GMBH6 citations69
US11959443B2Apr 16, 2024
Filter element and filter system having a filter element
MANN & HUMMEL GMBH0 citations61
US12064721B2Aug 20, 2024
Filter element and method for manufacturing a filter element
MANN & HUMMEL GMBH0 citations59
US12233369B2Feb 25, 2025
Air filter element having a circumferentially protruding clean air seal, filter housing and air filter
MANN & HUMMEL GMBH0 citations50
US12070707B2Aug 27, 2024
Filter element, housing for a filter system, and filter system comprising a filter element and a housing
MANN & HUMMEL GMBH0 citations50
US9205358B2Dec 8, 2015
Filter element
MANN & HUMMEL GMBH0 citations48