Granted Patent
Utility
US 5,685,901 · App. 08/346,120
Pigment composition of a modified diketopyrrolopyrrole and an aminoalkyl acrylate resin
Inventor:
Philippe Bugnon
Patented Case
View Patent ↗
Granted: Nov 11, 1997
Filed: Nov 29, 1994
Inventor
Philippe Bugnon
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.