Granted Patent
Utility
US 6,143,853 · App. 09/047,469
Method for separation and synthetic polymers that can be used as separation media in the method
Inventors:
Jan Ericsson, Eva Berggren, Liselotte Lundh
Patented Case
View Patent ↗
Granted: Nov 7, 2000
Filed: Mar 25, 1998
Inventors
Jan Ericsson
Eva Berggren
Liselotte Lundh
Assignee (at issue)
Pharmacia Biotech AB
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.