Granted Patent
Utility
US 5,456,315 · App. 08/189,966
Horizontal well gravity drainage combustion process for oil recovery
Inventors:
Kenneth E. Kisman, Ben Nzekwu, Edmund C. Lau
Patented Case
View Patent ↗
Granted: Oct 10, 1995
Filed: Feb 1, 1994
Inventors
Kenneth E. Kisman
Ben Nzekwu
Edmund C. Lau
Assignee (at issue)
Alberta Oil Sands Technology and Research
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.