Granted Patent
Utility
US 6,121,602 · App. 09/100,173
Method for monitoring foam and gas carry under and for controlling the addition of foam inhibiting chemicals
Inventors:
Michael K. Poindexter, Daniel H. Emmons, Samuel Clay Marsh, Michael C. Edwards
Patented Case
View Patent ↗
Granted: Sep 19, 2000
Filed: Jun 18, 1998
Inventors
Michael K. Poindexter
Daniel H. Emmons
Samuel Clay Marsh
Michael C. Edwards
Assignee (at issue)
Nalco/Exxon Energy Chemicals, L.P.
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.