Granted Patent
Utility
US 5,030,734 · App. 07/258,541
Solid solutions of azomethine pigments
Inventor:
Fridolin Babler
Patented Case
View Patent ↗
Granted: Jul 9, 1991
Filed: Oct 17, 1988
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.