Granted Patent
Utility
US 5,641,350 · App. 08/569,435
Organic pigments coated with metal phosphate complexes and amines
Inventors:
Laurent Chassot, Philippe Bugnon
Patented Case
View Patent ↗
Granted: Jun 24, 1997
Filed: Dec 8, 1995
Inventors
Laurent Chassot
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.