Granted Patent
Utility
US 4,544,746 · App. 06/378,802
Process for preparing 2-anilinoacridone
Inventor:
Wilfried G. Holtje
Patented Case
View Patent ↗
Granted: Oct 1, 1985
Filed: May 17, 1982
Inventor
Wilfried G. Holtje
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.