Granted Patent
Utility
US 5,362,780 · App. 08/077,974
Compositions based on 2,9-dichloroquinacridone pigments
Inventors:
Fridolin Babler, Charles G. Orange, Edward E. Jaffe
Patented Case
View Patent ↗
Granted: Nov 8, 1994
Filed: Jun 15, 1993
Inventors
Fridolin Babler
Charles G. Orange
Edward E. Jaffe
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.