Granted Patent
Utility
US 6,221,237 · App. 09/339,788
Electrokinetic removal of charged contaminant species from soil and other media using moderately conductive adsorptive materials
Inventors:
Eric R. Lindgren, Earl D. Mattson
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Jun 24, 1999
Inventors
Eric R. Lindgren
Earl D. Mattson
Assignee (at issue)
Sandia Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.