Granted Patent
Utility
US 6,454,003 · App. 09/593,197
Composition and method for recovering hydrocarbon fluids from a subterranean reservoir
Inventors:
Kin-Tai Chang, Harry Frampton, James C. Morgan
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Jun 14, 2000
Inventors
Kin-Tai Chang
Harry Frampton
James C. Morgan
Assignee (at issue)
Ondeo Nalco Energy Services, 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.