Granted Patent
Utility
US 6,712,401 · App. 10/069,501
Tubular threaded joint capable of being subjected to diametral expansion
Inventors:
Jean-Luc Coulon, Thierry Noel, Gabriel Roussie, Emmanuel Varenne
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: May 22, 2002
Inventors
Jean-Luc Coulon
Thierry Noel
Gabriel Roussie
Emmanuel Varenne
Assignee (at issue)
VALLOUREC MANNESMANN OIL & GAS FRANCE
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.