Granted Patent
Utility
US 5,853,596 · App. 08/761,952
Method for reducing chemical oxygen demand of water containing organic material emulsified by a surfactant
Inventor:
Michael W. Gibson
Patented Case
View Patent ↗
Granted: Dec 29, 1998
Filed: Dec 9, 1996
Inventor
Michael W. Gibson
Assignee (at issue)
Henkel Limited
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.