Granted Patent
Utility
US 5,338,685 · App. 07/991,675
Process for the continuous quantitative determination of fluorine-containing compounds
Inventor:
Klaus Frenk
Patented Case
View Patent ↗
Granted: Aug 16, 1994
Filed: Dec 16, 1992
Inventor
Klaus Frenk
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.