Granted Patent
Utility
US 5,371,256 · App. 08/037,783
Ferrocenyl diphosphines as ligands for homogeneous catalysts
Inventors:
Antonio Togni, Felix Spindler, Nadia Zanetti, Amina Tijani
Patented Case
View Patent ↗
Granted: Dec 6, 1994
Filed: Mar 26, 1993
Inventors
Antonio Togni
Felix Spindler
Nadia Zanetti
Amina Tijani
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.