Granted Patent
Utility
US 4,740,597 · App. 06/767,940
Process for the continuous reaction of cyanuric fluoride with sulfo-containing aromatic amines
Inventors:
Karlheinz Franke, Edmond Ruhlmann
Patented Case
View Patent ↗
Granted: Apr 26, 1988
Filed: Aug 21, 1985
Inventors
Karlheinz Franke
Edmond Ruhlmann
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.