Granted Patent
Utility
US 5,453,151 · App. 08/187,244
Resinated 2,9-dimethylquinacridone
Inventor:
Fridolin Babler
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Jan 25, 1994
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.