Granted Patent
Utility
US 5,352,280 · App. 08/145,443
Pigment and ink compositions
Inventor:
Robert Bruce McKay
Patented Case
View Patent ↗
Granted: Oct 4, 1994
Filed: Oct 28, 1993
Inventor
Robert Bruce McKay
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.