Granted Patent
Utility
US 6,576,213 · App. 08/497,039
Method of producing chlorine dioxide
Inventors:
Helena Falgen, Johan Landfors, Kaj Kangasniemi
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Jun 30, 1995
Inventors
Helena Falgen
Johan Landfors
Kaj Kangasniemi
Assignee (at issue)
EKA Chemicals
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.