Granted Patent
Utility
US 4,863,522 · App. 07/136,685
Novel compositions based on C.I. Pigment Red 177
Inventors:
Max Jost, Edward E. Jaffe, Philippe Bugnon
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Dec 22, 1987
Inventors
Max Jost
Edward E. Jaffe
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.