Granted Patent
Utility
US 5,223,543 · App. 07/963,566
Reduction in polystyrene with activated agent
Inventor:
Claudia Iovino
Patented Case
View Patent ↗
Granted: Jun 29, 1993
Filed: Oct 19, 1992
Inventor
Claudia Iovino
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.