Granted Patent
Utility
US 5,585,003 · App. 08/564,883
Treatment of dialysis feedwater using ozone
Inventor:
John Van Newenhizen
Patented Case
View Patent ↗
Granted: Dec 17, 1996
Filed: Nov 30, 1995
Inventor
John Van Newenhizen
Assignee (at issue)
CULLIGAN INTERNATIONAL COMPANY
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.