Granted Patent
Utility
US 4,145,401 · App. 05/770,362
High efficiency chlorine dioxide production at low acidity with methanol addition
Inventors:
Richard Swindells, Maurice C. J. Fredette
Patented Case
View Patent ↗
Granted: Mar 20, 1979
Filed: Feb 22, 1977
Inventors
Richard Swindells
Maurice C. J. Fredette
Assignee (at issue)
ERCO Industries Limited
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.