Granted Patent
Utility
US 5,272,091 · App. 07/920,604
Water purification method and apparatus
Inventors:
Yair Egozy, Adam Foley, Gary A. O'Neill
Patented Case
View Patent ↗
Granted: Dec 21, 1993
Filed: Jul 27, 1992
Inventors
Yair Egozy
Adam Foley
Gary A. O'Neill
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.