Granted Patent
Utility
US 6,225,504 · App. 09/331,826
Phosphanes, their method of production and use in metal complexes
Inventors:
Sandra Bogdanovic, Matthias Beller, Alexander Zapf, Jurgen Krauter
Patented Case
View Patent ↗
Granted: May 1, 2001
Filed: Jun 23, 1999
Inventors
Sandra Bogdanovic
Matthias Beller
Alexander Zapf
Jurgen Krauter
Assignee (at issue)
Celanese GmbH
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.