Granted Patent
Utility
US 6,189,383 · App. 09/329,215
Method and apparatus for acoustic logging of fluid density and wet cement plugs in boreholes
Inventors:
Lucio N. Tello, Thomas J. Blankinship, Edwin K. Roberts
Patented Case
View Patent ↗
Granted: Feb 20, 2001
Filed: Jun 10, 1999
Inventors
Lucio N. Tello
Thomas J. Blankinship
Edwin K. Roberts
Assignee (at issue)
Computalog Research, 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.