Granted Patent
Utility
US 5,661,124 · App. 08/396,866
Blood substitutes
Inventors:
Stephen J. Hoffman, Kiyoshi Nagai
Patented Case
View Patent ↗
Granted: Aug 26, 1997
Filed: Mar 1, 1995
Inventors
Stephen J. Hoffman
Kiyoshi Nagai
Assignee (at issue)
Somatogen, 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.