Granted Patent
Utility
US 4,359,353 · App. 06/264,991
Polypeptides as chemical tagging materials
Inventor:
Paul H. Kydd
Patented Case
View Patent ↗
Granted: Nov 16, 1982
Filed: May 18, 1981
Inventor
Paul H. Kydd
Assignee (at issue)
Hydrocarbon Research, 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.