Inventor · disambiguated record
Francis A. Friedmann
Also filed as: FRIEDMANN FRANCIS A
3 granted patents·742 citations·filing 1993–1997
81Inventor score
Files withDONALDSON CO INC3
Top patents by PatentIndex Score
3 records- 0198US5895574ARolled liquid filter using fluted mediaDONALDSON CO INC·Filed 1996·Granted Apr 20, 1999·449 cites·8 claims
- 0294US5814219APleated filter having a planar sheet of randomly arranged filaments to maintain pleat spacingDONALDSON CO INC·Filed 1997·Granted Sep 29, 1998·127 cites·23 claims
- 0394US5342519AFluid filter cartridge with replaceable filter elementDONALDSON CO INC·Filed 1993·Granted Aug 30, 1994·166 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →