DH

Donald F. Hagen

3M: 8 patents #1 of 1,069Top 1%
📍 Woodbury, MN: #1 of 156 inventorsTop 1%
🗺 Minnesota: #5 of 3,156 inventorsTop 1%
Overall (1997): #1,266 of 185,788Top 1%
8
Patents 1997

Issued Patents 1997

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
5702610 Sheet materials for solid phase extractions and solid phase reactions Simon S. Fung, Paul E. Hansen 1997-12-30
5700375 Particle loaded membranes as oxidant scavengers Kenneth M. Hart, Glenn Delmont Johnson 1997-12-23
5688370 Sheet materials for solid phase extractions and solid phase reactions Simon S. Fung, Paul E. Hansen 1997-11-18
5639372 Composite membranes for solid phase extractions and reactions Paul E. Hansen, Craig G. Markell 1997-06-17
5635060 Composite membranes for solid phase extractions and reactions Paul E. Hansen, Craig G. Markell 1997-06-03
5618438 Method of isolating an analyte using a solid phase extraction medium James S. Fritz, Philip J. Dumont, Craig G. Markell, Luther W. Schmidt 1997-04-08
5616407 Self-wettable solid phase extraction medium James S. Fritz, Craig G. Markell 1997-04-01
5595649 Particle-loaded nonwoven fibrous article for separations and purifications Craig G. Markell, Paul E. Hansen, Nicholas R. Baumann 1997-01-21