Granted Patent
Utility
US 6,124,244 · App. 09/312,383
Clear brine drill-in fluid
Inventor:
Joseph R. Murphey
Patented Case
View Patent ↗
Granted: Sep 26, 2000
Filed: May 14, 1999
Inventor
Joseph R. Murphey
Assignee (at issue)
TETRA Technologies, 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.