Inventor · disambiguated record
Donald F. Hagen
Also filed as: HAGEN DONALD F · HAGEN DONALD FREDERICK
38 granted patents·1,925 citations·filing 1984–2001
99Inventor score
Top patents by PatentIndex Score
38 records- 0199US5328758AParticle-loaded nonwoven fibrous article for separations and purificationsMINNESOTA MINING & MFG·Filed 1992·Granted Jul 12, 1994·173 cites·22 claims
- 0297US4810381AComposite chromatographic articleMINNESOTA MINING & MFG·Filed 1987·Granted Mar 7, 1989·155 cites·18 claims
- 0396US6365769B1Perfluoroalkyl halides and derivatives3M INNOVATIVE PROPERTIES CO·Filed 2000·Granted Apr 2, 2002·58 cites·14 claims
- 0495US5071610AMethod of making a controlled pore composite polytetrafluoroethyleneMINNESOTA MINING & MFG·Filed 1991·Granted Dec 10, 1991·129 cites·20 claims
- 0593US4971736AMethod of preparing composite chromatographic articleMINNESOTA MINING & MFG·Filed 1989·Granted Nov 20, 1990·86 cites·15 claims
- 0692US6048952APerfluoroalkyl halides and derivatives3M INNOVATIVE PROPERTIES CO·Filed 1997·Granted Apr 11, 2000·44 cites·44 claims
- 0792US5852148APerfluoroalkyl halides and derivativesMINNESOTA MINING & MFG·Filed 1997·Granted Dec 22, 1998·55 cites·42 claims
- 0892US5415779AParticle-loaded nonwoven fibrous article for separations and purificationsMINNESOTA MINING & MFG·Filed 1994·Granted May 16, 1995·66 cites·22 claims
- 0990US4906378AComposite chromatographic articleMINNESOTA MINING & MFG·Filed 1988·Granted Mar 6, 1990·81 cites·32 claims
- 1089US5595649AParticle-loaded nonwoven fibrous article for separations and purificationsMINNESOTA MINING & MFG·Filed 1995·Granted Jan 21, 1997·70 cites·29 claims
- 1188US5279742ASolid phase extraction mediumMINNESOTA MINING & MFG·Filed 1992·Granted Jan 18, 1994·89 cites·36 claims
- 1286US5993935ACovalently reactive particles incorporated in a continous porous matrix3M INNOVATIVE PROPERTIES CO·Filed 1991·Granted Nov 30, 1999·103 cites·16 claims
- 1386US5492627AMethod for separating mercury from fluids using composite articlesMINNESOTA MINING & MFG·Filed 1994·Granted Feb 20, 1996·54 cites·15 claims
- 1486US5248428AArticle for separations and purifications and method of controlling porosity thereinMINNESOTA MINING & MFG·Filed 1992·Granted Sep 28, 1993·48 cites·21 claims
- 1586US5207915ASeparation method using controlled pore composite polytetrafluoroethylene articleMINNESOTA MINING & MFG·Filed 1992·Granted May 4, 1993·59 cites·16 claims
- 1684US5147539AControlled pore composite polytetrafluoroethylene articleMINNESOTA MINING & MFG·Filed 1991·Granted Sep 15, 1992·53 cites·20 claims
- 1781US5635060AComposite membranes for solid phase extractions and reactionsMINNESOTA MINING & MFG·Filed 1996·Granted Jun 3, 1997·40 cites·19 claims
- 1880US5738790AComposite membranes for solid phase extractions and reactionsMINNESOTA MINING & MFG·Filed 1997·Granted Apr 14, 1998·37 cites·22 claims
- 1980US5529686AComposite membranes for solid phase extractions and reactionsMINNESOTA MINING & MFG·Filed 1995·Granted Jun 25, 1996·36 cites·21 claims
- 2079US5558771AComposite articles separating mercury from fluidsMINNESOTA MINING & MFG·Filed 1995·Granted Sep 24, 1996·57 cites·12 claims
- 2179US5238621AMethod of controlling porosity in a composite articleMINNESOTA MINING & MFG·Filed 1992·Granted Aug 24, 1993·40 cites·20 claims
- 2277US5019232AMedium for electrophoresisMINNESOTA MINING & MFG·Filed 1990·Granted May 28, 1991·50 cites·34 claims
- 2375US5702610ASheet materials for solid phase extractions and solid phase reactionsMINNESOTA MINING & MFG·Filed 1996·Granted Dec 30, 1997·35 cites·25 claims
- 2475US5700375AParticle loaded membranes as oxidant scavengersMINNESOTA MINING & MFG·Filed 1996·Granted Dec 23, 1997·54 cites·23 claims
- 2572US4532219AHigh frequency radiation-induced plasma analysis of volatile or non-volatile materialsMINNESOTA MINING & MFG·Filed 1984·Granted Jul 30, 1985·27 cites·20 claims
- 2671US5507941ASystem for purifying saturated fluoroperhalocarbon liquidsMINNESOTA MINING & MFG·Filed 1994·Granted Apr 16, 1996·10 cites·10 claims
- 2770US5403489ASolid phase extraction method and apparatusMINNESOTA MINING & MFG·Filed 1993·Granted Apr 4, 1995·31 cites·32 claims
- 2869US5639372AComposite membranes for solid phase extractions and reactionsMINNESOTA MINING & MFG·Filed 1996·Granted Jun 17, 1997·22 cites·27 claims
- 2969US5616407ASelf-wettable solid phase extraction mediumMINNESOTA MINING & MFG·Filed 1995·Granted Apr 1, 1997·28 cites·26 claims
- 3068US6147268AFluoroalkene-nucleophile adducts for analysis and removal of fluoroalkenes3M INNOVATIVE PROPERTIES CO·Filed 1998·Granted Nov 14, 2000·9 cites·12 claims
- 3167US5688370ASheet materials for solid phase extractions and solid phase reactionsMINNESOTA MINING & MFG·Filed 1995·Granted Nov 18, 1997·28 cites·26 claims
- 3263US5618438AMethod of isolating an analyte using a solid phase extraction mediumMINNESOTA MINING & MFG·Filed 1995·Granted Apr 8, 1997·31 cites·30 claims
- 3357USRE36811ESolid phase extraction mediumMINNESOTA MINING & MFG·Filed 1994·Granted Aug 8, 2000·21 cites·37 claims
- 3457US5300714AMethod of purifying saturated fluoroperhalocarbon liquidsMINNESOTA MINING & MFG·Filed 1991·Granted Apr 5, 1994·18 cites·18 claims
- 3555US6521461B2Fluoroalkene-nucleophile adducts for analysis and removal of fluoroalkenes3M INNOVATIVE PROPERTIES CO·Filed 2001·Granted Feb 18, 2003·1 cites·12 claims
- 3655US5340746AComposite reactive articles for the determination of cyanideMINNESOTA MINING & MFG·Filed 1993·Granted Aug 23, 1994·15 cites·10 claims
- 3750US5470532AComposite reactive articles for the determination of cyanideMINNESOTA MINING & MFG·Filed 1994·Granted Nov 28, 1995·12 cites·22 claims
- 3845US6437202B2Fluoroalkene-nucleophile adducts for analysis and removal of fluoroalkenes3M INNOVATIVE PROPERTIES CO·Filed 2001·Granted Aug 20, 2002·0 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →