Granted Patent
Utility
US 5,378,276 · App. 08/198,016
Diketopyrrolopyrroles containing nitroxyl groups
Inventors:
Laurent Chassot, Gary Wooden
Patented Case
View Patent ↗
Granted: Jan 3, 1995
Filed: Feb 17, 1994
Inventors
Laurent Chassot
Gary Wooden
Assignee (at issue)
Ciba-Geigy
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.