Granted Patent
Utility
US 6,253,855 · App. 09/467,438
Intelligent production riser
Inventors:
Kashmir Singh Johal, Anthony Robert Cousins
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: Dec 20, 1999
Inventors
Kashmir Singh Johal
Anthony Robert Cousins
Assignee (at issue)
Mentor Subsea Technology Services, 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.