Granted Patent
Utility
US 4,716,116 · App. 06/212,782
Protein modification to provide enzyme activity
Inventor:
Melvin H. Keyes
Patented Case
View Patent ↗
Granted: Dec 29, 1987
Filed: Dec 4, 1980
Inventor
Melvin H. Keyes
Assignee (at issue)
Owens-Illinois Glass Container 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.