Granted Patent
Utility
US 5,220,504 · App. 07/749,508
Evaluating properties of porous formations
Inventors:
Gary R. Holzhausen, J. Jamie Goemez-Hernandez, Gregory S. Baker, Howard N. Egan
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Aug 16, 1991
Inventors
Gary R. Holzhausen
J. Jamie Goemez-Hernandez
Gregory S. Baker
Howard N. Egan
Assignee (at issue)
Applied Geomechanics Inc.
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.