Granted Patent
Utility
US 6,729,145 · App. 09/673,467
Process plant
Inventors:
Sverre Johannesen Overå, Per Salater
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: May 2, 2001
Inventors
Sverre Johannesen Overå
Per Salater
Assignee (at issue)
NORSK HYDRO ASA
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.