Hagen; Donald F.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hagen; Donald F..The latest application filed is for "perfluoroalkyl halides and derivatives".
- Hagen; Donald F. - Woodbury MN
- Hagen; Donald F. - North Oaks MN
- Hagen; Donald F. - Woodburg MN
| Patent | Date |
|---|---|
| Perfluoroalkyl halides and derivatives Grant 6,365,769 - Behr , et al. April 2, 2 | 2002-04-02 |
| Solid phase extraction medium Grant RE36,811 - Markell , et al. August 8, 2 | 2000-08-08 |
| Perfluoroalkyl halides and derivatives Grant 6,048,952 - Behr , et al. April 11, 2 | 2000-04-11 |
| Covalently reactive particles incorporated in a continous porous matrix Grant 5,993,935 - Rasmussen , et al. November 30, 1 | 1999-11-30 |
| Perfluoroalkyl halides and derivatives Grant 5,852,148 - Behr , et al. December 22, 1 | 1998-12-22 |
| Composite membranes for solid phase extractions and reactions Grant 5,738,790 - Hagen , et al. April 14, 1 | 1998-04-14 |
| Sheet materials for solid phase extractions and solid phase reactions Grant 5,702,610 - Hagen , et al. December 30, 1 | 1997-12-30 |
| Particle loaded membranes as oxidant scavengers Grant 5,700,375 - Hagen , et al. December 23, 1 | 1997-12-23 |
| Composite membranes for solid phase extractions and reactions Grant 5,635,060 - Hagen , et al. June 3, 1 | 1997-06-03 |
| Method of isolating an analyte using a solid phase extraction medium Grant 5,618,438 - Fritz , et al. April 8, 1 | 1997-04-08 |
| Self-wettable solid phase extraction medium Grant 5,616,407 - Fritz , et al. April 1, 1 | 1997-04-01 |
| Particle-loaded nonwoven fibrous article for separations and purifications Grant 5,595,649 - Markell , et al. January 21, 1 | 1997-01-21 |
| Composite membranes for solid phase extractions and reactions Grant 5,529,686 - Hagen , et al. June 25, 1 | 1996-06-25 |
| Method for separating mercury from fluids using composite articles Grant 5,492,627 - Hagen , et al. February 20, 1 | 1996-02-20 |
| Composite reactive articles for the determination of cyanide Grant 5,470,532 - Hagen , et al. November 28, 1 | 1995-11-28 |
| Particle-loaded nonwoven fibrous article for separations and purifications Grant 5,415,779 - Markell , et al. May 16, 1 | 1995-05-16 |
| Solid phase extraction method and apparatus Grant 5,403,489 - Hagen , et al. April 4, 1 | 1995-04-04 |
| Composite reactive articles for the determination of cyanide Grant 5,340,746 - Hagen , et al. August 23, 1 | 1994-08-23 |
| Particle-loaded nonwoven fibrous article for separations and purifications Grant 5,328,758 - Markell , et al. July 12, 1 | 1994-07-12 |
| Method of purifying saturated fluoroperhalocarbon liquids Grant 5,300,714 - Pothapragada , et al. April 5, 1 | 1994-04-05 |
| Solid phase extraction medium Grant 5,279,742 - Markell , et al. January 18, 1 | 1994-01-18 |
| Article for separations and purifications and method of controlling porosity therein Grant 5,248,428 - Hagen , et al. September 28, 1 | 1993-09-28 |
| Method of controlling porosity in a composite article Grant 5,238,621 - Hagen , et al. August 24, 1 | 1993-08-24 |
| Separation method using controlled pore composite polytetrafluoroethylene article Grant 5,207,915 - Hagen , et al. May 4, 1 | 1993-05-04 |
| Controlled pore composite polytetrafluoroethylene article Grant 5,147,539 - Hagen , et al. September 15, 1 | 1992-09-15 |
| Method of making a controlled pore composite polytetrafluoroethylene Grant 5,071,610 - Hagen , et al. December 10, 1 | 1991-12-10 |
| Medium for electrophoresis Grant 5,019,232 - Wilson , et al. May 28, 1 | 1991-05-28 |
| Method of preparing composite chromatographic article Grant 4,971,736 - Hagen , et al. November 20, 1 | 1990-11-20 |
| Composite chromatographic article Grant 4,906,378 - Hagen , et al. March 6, 1 | 1990-03-06 |
| Composite chromatographic article Grant 4,810,381 - Hagen , et al. March 7, 1 | 1989-03-07 |
| High frequency radiation-induced plasma analysis of volatile or non-volatile materials Grant 4,532,219 - Hagen , et al. July 30, 1 | 1985-07-30 |
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