Granted Patent
Utility
US 4,304,692 · App. 06/168,102
Synthesis of biologically active peptides
Inventors:
John Lawrence Hughes, Jay K. Seyler, Robert C. Liu
Patented Case
View Patent ↗
Granted: Dec 8, 1981
Filed: Jul 14, 1980
Inventors
John Lawrence Hughes
Jay K. Seyler
Robert C. Liu
Assignee (at issue)
Armour Pharmaceutical
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.