Granted Patent
Utility
US 5,981,736 · App. 09/104,795
One step device and process for concentration and purification of biological molecules
Inventor:
Jonathan Coffman
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: Jun 25, 1998
Inventor
Jonathan Coffman
Assignee (at issue)
LIFE TECHNOLOGIES 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.