Granted Patent
Utility
US 5,202,316 · App. 07/774,568
N,N,N',N'-6-(1-piperazinyl)-2,5-pyridinediamines
Inventors:
Andre Claussner, Jacques Leclaire, Lucien Nedelec, Daniel Philibert
Patented Case
View Patent ↗
Granted: Apr 13, 1993
Filed: Oct 9, 1991
Inventors
Andre Claussner
Jacques Leclaire
Lucien Nedelec
Daniel Philibert
Assignee (at issue)
Roussel Uclaf
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.