Granted Patent
Utility
US 6,695,012 · App. 10/089,419
Lubricant coating for expandable tubular members
Inventors:
Lev Ring, Andrei Gregory Filippov, Mike D. Cowan, Bill Dean
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Sep 19, 2002
Inventors
Lev Ring
Andrei Gregory Filippov
Mike D. Cowan
Bill Dean
Assignee (at issue)
SHELL OIL COMPANY
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.