Granted Patent
Utility
US 4,704,465 · App. 06/800,856
Process for preparing ethylenediaminetetraacetonitrile
Inventors:
Kent P. Lannert, Sum-Muk Lee
Patented Case
View Patent ↗
Granted: Nov 3, 1987
Filed: Nov 22, 1985
Inventors
Kent P. Lannert
Sum-Muk Lee
Assignee (at issue)
Monsanto Company
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.