Granted Patent
Utility
US 4,785,081 · App. 06/912,175
Process for the production of reactive dyes by adiabatic reaction of cyanuric chloride with an amino group-containing dye at elevated temperature
Inventor:
Karlheinz Franke
Patented Case
View Patent ↗
Granted: Nov 15, 1988
Filed: Sep 22, 1986
Inventor
Karlheinz Franke
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.