Granted Patent
Utility
US 5,705,669 · App. 08/593,667
Alkyl arylphosphinites
Inventor:
Hans-Jerg Kleiner
Patented Case
View Patent ↗
Granted: Jan 6, 1998
Filed: Jan 29, 1996
Inventor
Hans-Jerg Kleiner
Assignee (at issue)
Hoechst 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.