Granted Patent
Utility
US 5,563,254 · App. 08/170,095
Polynucleotides encoding genetically engineered mutant hemoglobins
Inventors:
Stephen J. Hoffman, Kiyoshi Nagai
Patented Case
View Patent ↗
Granted: Oct 8, 1996
Filed: Dec 20, 1993
Inventors
Stephen J. Hoffman
Kiyoshi Nagai
Assignees (at issue)
Medical Research Council
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.