Granted Patent
Utility
US 5,597,486 · App. 08/431,562
Membrane filtration with optimized addition of second liquid to maximize flux
Inventor:
Herb Lutz
Patented Case
View Patent ↗
Granted: Jan 28, 1997
Filed: May 1, 1995
Inventor
Herb Lutz
Assignee (at issue)
Millipore Investment Holdings, Ltd.
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.