Granted Patent
Utility
US 6,090,288 · App. 09/117,678
Process for chromatographic separation of peptides and nucleic acid, and new high affinity ion exchange matrix
Inventors:
Rolf Berglund, Jan Bergstrom, Makonnen Belew, Lennart Soderberg
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: Dec 29, 1998
Inventors
Rolf Berglund
Jan Bergstrom
Makonnen Belew
Lennart Soderberg
Assignee (at issue)
Amersham Pharmacia Biotech, Inc.
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.