Granted Patent
Utility
US 6,340,373 · App. 09/380,389
Process for recovering and treating of aqueous solutions
Inventor:
Per Halvard Billington
Patented Case
View Patent ↗
Granted: Jan 22, 2002
Filed: Aug 27, 1999
Inventor
Per Halvard Billington
Assignee (at issue)
Kvaerner Process Systems A.S.
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.