Granted Patent
Utility
US 4,409,346 · App. 06/216,350
Compositions stabilized by 6-amino-dibenz[d,g][1,3,2]dioxaphosphocines
Inventor:
Michael Rasberger
Patented Case
View Patent ↗
Granted: Oct 11, 1983
Filed: Dec 15, 1980
Inventor
Michael Rasberger
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.