Granted Patent
Utility
US 5,366,621 · App. 08/144,456
Chromatography column
Inventors:
Christopher R. Bidell, Colin K. Lanyl, Anthony Frederick Mann, Phillip Stafford
Patented Case
View Patent ↗
Granted: Nov 22, 1994
Filed: Oct 28, 1993
Inventors
Christopher R. Bidell
Colin K. Lanyl
Anthony Frederick Mann
Phillip Stafford
Assignee (at issue)
Amicon Limited
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.