Granted Patent
Utility
US 5,869,722 · App. 08/844,749
Process for producing aluminum phosphinates
Inventor:
Hans-Jerg Kleiner
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Apr 22, 1997
Inventor
Hans-Jerg Kleiner
Assignee (at issue)
Ticona LLC
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.