Granted Patent
Utility
US 4,876,269 · App. 07/071,028
Benoz-fused cycloalkane trans-1,2-diamine derivatives
Inventors:
Penio Pennev, Parthasarathi Rajagopalan, Richard M. Scribner
Patented Case
View Patent ↗
Granted: Oct 24, 1989
Filed: Jul 16, 1987
Inventors
Penio Pennev
Parthasarathi Rajagopalan
Richard M. Scribner
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.