Granted Patent
Utility
US 5,059,907 · App. 07/520,162
Method for evaluating the water saturation of subterranean formations from dielectric permittivity measurements
Inventor:
Michael Milton Sherman
Patented Case
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Granted: Oct 22, 1991
Filed: Apr 27, 1990
Inventor
Michael Milton Sherman
Assignee (at issue)
Amoco Corporation
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.