Granted Patent
Utility
US 4,929,627 · App. 07/362,681
Benzo-fused cycloalkane and oxa- and thia-, cycloalkane trans-1,2-diamine derivatives
Inventors:
Penio Pennev, Parthasarathi Rajagopalan, Richard M. Scribner
Patented Case
View Patent ↗
Granted: May 29, 1990
Filed: Jun 7, 1989
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.