Granted Patent
Utility
US 4,886,663 · App. 06/559,469
Synthetic heat-stable enterotoxin polypeptide of Escherichia coli and multimers thereof
Inventor:
Richard A. Houghten
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Dec 12, 1983
Inventor
Richard A. Houghten
Assignee (at issue)
Scripps Clinic and Research Foundation
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.