Granted Patent
Utility
US 4,868,209 · App. 07/097,827
Halogenated esters
Inventor:
Nazim Punja
Patented Case
View Patent ↗
Granted: Sep 19, 1989
Filed: Sep 17, 1987
Inventor
Nazim Punja
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.