Granted Patent
Utility
US 4,539,421 · App. 06/540,238
1H-Polyalkyl-phosphorinanes
Inventors:
John D. Spivack, Stephen D. Pastor, Paul A. Odorisio
Patented Case
View Patent ↗
Granted: Sep 3, 1985
Filed: Oct 11, 1983
Inventors
John D. Spivack
Stephen D. Pastor
Paul A. Odorisio
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.