Granted Patent
Utility
US 5,207,925 · App. 07/857,414
Process for the detoxification of cyanide-containing aqueous solutions
Inventors:
Norbert Steiner, Stephen Gos, Frank Ladwig, Manfred Diehl
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Mar 26, 1992
Inventors
Norbert Steiner
Stephen Gos
Frank Ladwig
Manfred Diehl
Assignee (at issue)
Degussa AG
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.