Granted Patent
Utility
US 5,439,591 · App. 08/187,316
Displacement chromatography process
Inventors:
Diana Pliura, Diane E. Wiffen, Salman Ashraf, Anthony A. Magnin
Patented Case
View Patent ↗
Granted: Aug 8, 1995
Filed: Jan 27, 1994
Inventors
Diana Pliura
Diane E. Wiffen
Salman Ashraf
Anthony A. Magnin
Assignee (at issue)
Hemosol, Inc.
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.