Granted Patent
Utility
US 4,665,164 · App. 06/629,476
Polysaccharide crosslinked separation material and its preparation
Inventors:
Per-åke Pernemalm, Mats Carlsson, Göran Lindgren
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: Jul 10, 1984
Inventors
Per-åke Pernemalm
Mats Carlsson
Göran Lindgren
Assignee (at issue)
Pharmacia 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.