Granted Patent
Utility
US 4,594,434 · App. 06/668,597
Process for the depolymerization of polyesters using dawsonite as the catalyst
Inventors:
Joseph Gordon Cahill, Eugene G. Harris
Patented Case
View Patent ↗
Granted: Jun 10, 1986
Filed: Nov 5, 1984
Inventors
Joseph Gordon Cahill
Eugene G. Harris
Assignee (at issue)
National Distillers and Chemical Corporation
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.