Granted Patent
Utility
US 5,681,739 · App. 08/452,591
Method for in situ or ex situ bioremediation of hexavalent chromium contaminated soils and/or groundwater
Inventors:
Charles E. Turick, William W. Apel
Patented Case
View Patent ↗
Granted: Oct 28, 1997
Filed: May 25, 1995
Inventors
Charles E. Turick
William W. Apel
Assignee (at issue)
Lockheed Idaho Technologies Company
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.