Inventor

Donald F. Hagen

Inventor

Woodbury, MN, US

Overview

38→

Patents

1985–2003

Patent span

Performing operations

Primary field (CPC B)

Patents· 38 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B01Dprimary

B01DSeparation24%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry24%

G01NInvestigating or analysing materials by determining their chemical or physical properties14%

Y10TTechnical subjects covered by former us classification12%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%

C07CAcyclic or carbocyclic compounds7%

C07BGeneral methods of organic chemistry3%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds3%

D04HMaking textile fabrics, e.g. from fibres or filamentary material3%

C07DHeterocyclic compounds2%

PatentTitleYear

6,521,461'Fluoroalkene-nucleophile adducts for analysis and removal of fluoroalkenes'2003 6,437,202'Fluoroalkene-nucleophile adducts for analysis and removal of fluoroalkenes'2002 6,365,769'Perfluoroalkyl halides and derivatives'2002 6,147,268'Fluoroalkene-nucleophile adducts for analysis and removal of fluoroalkenes'2000 RE036811'Solid phase extraction medium'2000 6,048,952'Perfluoroalkyl halides and derivatives'2000 5,993,935'Covalently reactive particles incorporated in a continous porous matrix'1999 5,852,148'Perfluoroalkyl halides and derivatives'1998 5,738,790'Composite membranes for solid phase extractions and reactions'1998 5,702,610'Sheet materials for solid phase extractions and solid phase reactions'1997 5,700,375'Particle loaded membranes as oxidant scavengers'1997 5,688,370'Sheet materials for solid phase extractions and solid phase reactions'1997 5,639,372'Composite membranes for solid phase extractions and reactions'1997 5,635,060'Composite membranes for solid phase extractions and reactions'1997 5,618,438'Method of isolating an analyte using a solid phase extraction medium'1997 5,616,407'Self-wettable solid phase extraction medium'1997 5,595,649'Particle-loaded nonwoven fibrous article for separations and purifications'1997 5,558,771'Composite articles separating mercury from fluids'1996 5,529,686'Composite membranes for solid phase extractions and reactions'1996 5,507,941'System for purifying saturated fluoroperhalocarbon liquids'1996 5,492,627'Method for separating mercury from fluids using composite articles'1996 5,470,532'Composite reactive articles for the determination of cyanide'1995 5,415,779'Particle-loaded nonwoven fibrous article for separations and purifications'1995 5,403,489'Solid phase extraction method and apparatus'1995 5,340,746'Composite reactive articles for the determination of cyanide'1994 5,328,758'Particle-loaded nonwoven fibrous article for separations and purifications'1994 5,300,714'Method of purifying saturated fluoroperhalocarbon liquids'1994 5,279,742'Solid phase extraction medium'1994 5,248,428'Article for separations and purifications and method of controlling porosity therein'1993 5,238,621'Method of controlling porosity in a composite article'1993 5,207,915'Separation method using controlled pore composite polytetrafluoroethylene article'1993 5,147,539'Controlled pore composite polytetrafluoroethylene article'1992 5,071,610'Method of making a controlled pore composite polytetrafluoroethylene'1991 5,019,232'Medium for electrophoresis'1991 4,971,736'Method of preparing composite chromatographic article'1990 4,906,378'Composite chromatographic article'1990 4,810,381'Composite chromatographic article'1989 4,532,219'High frequency radiation-induced plasma analysis of volatile or non-volatile materials'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–2000Patents assigned to MINNESOTA MINING & MFG (32)· patent assignee history

1985–2003Based in Woodbury, MN, US· patent location history

1989Based in Woodburg, MN, US· patent location history

1990Based in North Oaks, MN, US· patent location history

1999–2003Patents assigned to 3M INNOVATIVE PROPERTIES CO (6)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MINNESOTA MINING & MFG	32	1985–2000
3M INNOVATIVE PROPERTIES CO	6	1999–2003

Locations

Location	Patents	Span
Woodbury, Minnesota, US	36	1985–2003
North Oaks, Minnesota, US	1	1990
Woodburg, Minnesota, US	1	1989