Granted Patent
Utility
US 6,077,968 · App. 08/900,596
Process for the preparation of alkyl arylphosphinites
Inventor:
Hans-Jerg Kleiner
Patented Case
View Patent ↗
Granted: Jun 20, 2000
Filed: Jul 25, 1997
Inventor
Hans-Jerg Kleiner
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.