Inventor
MADDEN MICHAEL A
US15 patents
⚠️ This page may combine multiple inventors who share the name “MADDEN MICHAEL A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DONALDSON CO INC
14 patentsUS7488365B2Feb 10, 2009
Filter element using corrugated media sheet
DONALDSON CO INC108 citations97
US5869009AFeb 9, 1999
Filter device
DONALDSON CO INC57 citations93
US9795906B2Oct 24, 2017
Filter medium and breather filter structure
DONALDSON CO INC13 citations92
US11504663B2Nov 22, 2022
Filter medium and breather filter structure
DONALDSON CO INC4 citations83
USRE49097EJun 7, 2022
Filter medium and structure
DONALDSON CO INC4 citations83
US10610813B2Apr 7, 2020
Filter medium and breather filter structure
DONALDSON CO INC7 citations83
USRE47737ENov 26, 2019
Filter medium and structure
DONALDSON CO INC4 citations83
US10357730B2Jul 23, 2019
Filter media and elements
DONALDSON CO INC7 citations82
US9474994B2Oct 25, 2016
Filter media and elements
DONALDSON CO INC10 citations82
US12023613B2Jul 2, 2024
Filter media and elements
DONALDSON CO INC1 citations71
US11253802B2Feb 22, 2022
Filter media and elements
DONALDSON CO INC2 citations71
US12172111B2Dec 24, 2024
Filter medium and breather filter structure
DONALDSON CO INC0 citations62
USRE50226EDec 3, 2024
Filter medium and structure
DONALDSON CO INC0 citations62
US12528038B2Jan 20, 2026
Filter media and elements
DONALDSON CO INC0 citations60