Granted Patent
Utility
US 6,399,545 · App. 09/359,489
Method and composition of drilling with fluid including additive
Inventor:
Ron A. Rose
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: Jul 23, 1999
Inventor
Ron A. Rose
Assignee (at issue)
Grinding & Sizing Company LLC
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.