Inventor
HAGEN DONALD F
US35 patents
⚠️ This page may combine multiple inventors who share the name “HAGEN DONALD F”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MINNESOTA MINING & MFG
32 patentsUS5328758AJul 12, 1994
Particle-loaded nonwoven fibrous article for separations and purifications
MINNESOTA MINING & MFG173 citations99
US5071610ADec 10, 1991
Method of making a controlled pore composite polytetrafluoroethylene
MINNESOTA MINING & MFG129 citations98
US4810381AMar 7, 1989
Composite chromatographic article
MINNESOTA MINING & MFG155 citations98
US5738790AApr 14, 1998
Composite membranes for solid phase extractions and reactions
MINNESOTA MINING & MFG37 citations96
US5635060AJun 3, 1997
Composite membranes for solid phase extractions and reactions
MINNESOTA MINING & MFG40 citations96
US5595649AJan 21, 1997
Particle-loaded nonwoven fibrous article for separations and purifications
MINNESOTA MINING & MFG70 citations96
US5529686AJun 25, 1996
Composite membranes for solid phase extractions and reactions
MINNESOTA MINING & MFG36 citations96
US5415779AMay 16, 1995
Particle-loaded nonwoven fibrous article for separations and purifications
MINNESOTA MINING & MFG66 citations96
US5207915AMay 4, 1993
Separation method using controlled pore composite polytetrafluoroethylene article
MINNESOTA MINING & MFG59 citations96
US5852148ADec 22, 1998
Perfluoroalkyl halides and derivatives
MINNESOTA MINING & MFG55 citations95
US4971736ANov 20, 1990
Method of preparing composite chromatographic article
MINNESOTA MINING & MFG86 citations95
US5558771ASep 24, 1996
Composite articles separating mercury from fluids
MINNESOTA MINING & MFG57 citations94
US5492627AFeb 20, 1996
Method for separating mercury from fluids using composite articles
MINNESOTA MINING & MFG54 citations94
US5279742AJan 18, 1994
Solid phase extraction medium
MINNESOTA MINING & MFG89 citations94
US5639372AJun 17, 1997
Composite membranes for solid phase extractions and reactions
MINNESOTA MINING & MFG22 citations93
US5403489AApr 4, 1995
Solid phase extraction method and apparatus
MINNESOTA MINING & MFG31 citations93
US5702610ADec 30, 1997
Sheet materials for solid phase extractions and solid phase reactions
MINNESOTA MINING & MFG35 citations92
US5688370ANov 18, 1997
Sheet materials for solid phase extractions and solid phase reactions
MINNESOTA MINING & MFG28 citations92
US5616407AApr 1, 1997
Self-wettable solid phase extraction medium
MINNESOTA MINING & MFG28 citations92
US5248428ASep 28, 1993
Article for separations and purifications and method of controlling porosity therein
MINNESOTA MINING & MFG48 citations92
US5238621AAug 24, 1993
Method of controlling porosity in a composite article
MINNESOTA MINING & MFG40 citations92
US5147539ASep 15, 1992
Controlled pore composite polytetrafluoroethylene article
MINNESOTA MINING & MFG53 citations92
US4906378AMar 6, 1990
Composite chromatographic article
MINNESOTA MINING & MFG81 citations92
US5700375ADec 23, 1997
Particle loaded membranes as oxidant scavengers
MINNESOTA MINING & MFG54 citations91
USRE36811EAug 8, 2000
Solid phase extraction medium
MINNESOTA MINING & MFG21 citations90
US5019232AMay 28, 1991
Medium for electrophoresis
MINNESOTA MINING & MFG50 citations89
US5618438AApr 8, 1997
Method of isolating an analyte using a solid phase extraction medium
MINNESOTA MINING & MFG31 citations88
US4532219AJul 30, 1985
High frequency radiation-induced plasma analysis of volatile or non-volatile materials
MINNESOTA MINING & MFG27 citations86
US5340746AAug 23, 1994
Composite reactive articles for the determination of cyanide
MINNESOTA MINING & MFG15 citations82
US5300714AApr 5, 1994
Method of purifying saturated fluoroperhalocarbon liquids
MINNESOTA MINING & MFG18 citations81
US5470532ANov 28, 1995
Composite reactive articles for the determination of cyanide
MINNESOTA MINING & MFG12 citations73
US5507941AApr 16, 1996
System for purifying saturated fluoroperhalocarbon liquids
MINNESOTA MINING & MFG10 citations72
3M INNOVATIVE PROPERTIES CO
3 patentsUS5993935ANov 30, 1999
Covalently reactive particles incorporated in a continous porous matrix
3M INNOVATIVE PROPERTIES CO103 citations97
US6365769B1Apr 2, 2002
Perfluoroalkyl halides and derivatives
3M INNOVATIVE PROPERTIES CO58 citations95
US6048952AApr 11, 2000
Perfluoroalkyl halides and derivatives
3M INNOVATIVE PROPERTIES CO44 citations95