Granted Patent
Utility
US 4,168,299 · App. 05/888,440
Catalytic method for hydrolyzing urea
Inventor:
Lorenz P. Schell
Patented Case
View Patent ↗
Granted: Sep 18, 1979
Filed: Mar 20, 1978
Inventor
Lorenz P. Schell
Assignee (at issue)
Olin Corporation
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.