Granted Patent
Utility
US 5,975,798 · App. 08/922,042
In-situ decontamination of subsurface waste using distributed iron powder
Inventors:
John J. Liskowitz, Toshimune Kimura, Jun Ogata
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Sep 2, 1997
Inventors
John J. Liskowitz
Toshimune Kimura
Jun Ogata
Assignees (at issue)
ARS Technologies, Inc.
Dowa Mining Co., Ltd.
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.