Granted Patent
Utility
US 6,723,539 · App. 09/806,548
Absorbent medium containing particles of chopped cellulose or agarose sponge material having functional groups
Inventors:
Katherine Louise Angus, David Alan Hutton, Robert John Noel, Linda A. Taylor
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Aug 13, 2001
Inventors
Katherine Louise Angus
David Alan Hutton
Robert John Noel
Linda A. Taylor
Assignee (at issue)
BioProcessing, 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.