Granted Patent
Utility
US 4,411,802 · App. 06/299,708
Enhanced oil recovery
Inventors:
George W. Lester, Thomas P. Malloy
Patented Case
View Patent ↗
Granted: Oct 25, 1983
Filed: Sep 8, 1981
Inventors
George W. Lester
Thomas P. Malloy
Assignee (at issue)
UOP LLC
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.