Granted Patent
Utility
US 5,091,166 · App. 07/576,949
Process for the production of chlorine dioxide
Inventors:
Jörgen Engström, Maria Norell
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Sep 4, 1990
Inventors
Jörgen Engström
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.