Granted Patent
Utility
US 4,298,544 · App. 06/118,066
Manufacturing process for preparing disubstituted (N-cyanoimido) carbonates
Inventor:
Graham Ernest Robinson
Patented Case
View Patent ↗
Granted: Nov 3, 1981
Filed: Jan 24, 1980
Inventor
Graham Ernest Robinson
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.