Granted Patent
Utility
US 4,770,868 · App. 07/060,903
Process for production of chlorine dioxide
Inventor:
Maria Norell
Patented Case
View Patent ↗
Granted: Sep 13, 1988
Filed: Jun 12, 1987
Inventor
Maria Norell
Assignee (at issue)
Eka Nobel AB
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.