Granted Patent
Utility
US 5,298,540 · App. 07/856,238
Process for stabilizing recycled mixed plastics
Inventors:
Jean-Roch Pauquet, Franciszek Sitek, Roberto Todesco
Patented Case
View Patent ↗
Granted: Mar 29, 1994
Filed: Mar 25, 1992
Inventors
Jean-Roch Pauquet
Franciszek Sitek
Roberto Todesco
Assignee (at issue)
Ciba-Geigy
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.