Granted Patent
Utility
US 5,074,918 · App. 07/548,032
Process for conditioning organic pigments
Inventor:
Fridolin Babler
Patented Case
View Patent ↗
Granted: Dec 24, 1991
Filed: Jul 5, 1990
Inventor
Fridolin Babler
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.