Granted Patent
Utility
US 4,539,161 · App. 06/282,559
Amine oxide compounds
Inventor:
Leonardo Guglielmetti
Patented Case
View Patent ↗
Granted: Sep 3, 1985
Filed: Jul 13, 1981
Inventor
Leonardo Guglielmetti
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.