Granted Patent
Utility
US 6,069,002 · App. 08/885,108
System and process for in tank treatment of crude oil sludges to recover hydrocarbons and aid in materials separation
Inventor:
John Powell
Patented Case
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Granted: May 30, 2000
Filed: Jun 30, 1997
Inventor
John Powell
Assignee (at issue)
APLC, Inc.
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.