Granted Patent
Utility
US 5,965,810 · App. 09/140,953
Method for determining sedimentary rock pore pressure caused by effective stress unloading
Inventor:
Philip W. Holbrook
Patented Case
View Patent ↗
Granted: Oct 12, 1999
Filed: Aug 27, 1998
Inventor
Philip W. Holbrook
Assignee (at issue)
Baroid Technology, 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.