Granted Patent
Utility
US 6,186,232 · App. 09/176,123
Enhanced oil recovery by altering wettability
Inventors:
Eddy Isaacs, Tawfik N. Nasr, Alex Babchin
Patented Case
View Patent ↗
Granted: Feb 13, 2001
Filed: Oct 21, 1998
Inventors
Eddy Isaacs
Tawfik N. Nasr
Alex Babchin
Assignee (at issue)
Alberta Oil Sands Tech and Research Authority
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.