Granted Patent
Utility
US 5,154,809 · App. 07/417,950
Process for purifying water
Inventors:
Yoram Oren, Anthony J. Giuffrida, Stephen M. Ciaccio
Patented Case
View Patent ↗
Granted: Oct 13, 1992
Filed: Oct 6, 1989
Inventors
Yoram Oren
Anthony J. Giuffrida
Stephen M. Ciaccio
Assignee (at issue)
Millipore Corporation
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.