Granted Patent
Utility
US 5,326,482 · App. 08/141,119
On-line acid monitor and neutralizer feed control of the overhead water in oil refineries
Inventors:
Ronald B. Lessard, Paul Fearnside
Patented Case
View Patent ↗
Granted: Jul 5, 1994
Filed: Oct 21, 1993
Inventors
Ronald B. Lessard
Paul Fearnside
Assignee (at issue)
Nalco Chemical 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.