Granted Patent
Utility
US 4,754,022 · App. 06/790,923
Cationic dyes from diazotized 5-aminoisothiazoles and tetrahydroquinolines or indolines
Inventor:
Peter Moser
Patented Case
View Patent ↗
Granted: Jun 28, 1988
Filed: Oct 24, 1985
Inventor
Peter Moser
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.