Granted Patent
Utility
US 6,149,850 · App. 08/166,168
Addition of additives to polymeric materials
Inventor:
Oliver Keith Gannon
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: Dec 10, 1993
Inventor
Oliver Keith Gannon
Assignee (at issue)
BASF SE
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.