Granted Patent
Utility
US 4,367,355 · App. 06/237,030
Hydrogenation using chitin and chitosan based immobilized metal catalysts
Inventor:
Blaise J. Arena
Patented Case
View Patent ↗
Granted: Jan 4, 1983
Filed: Feb 23, 1981
Inventor
Blaise J. Arena
Assignee (at issue)
UOP LLC
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.