Granted Patent
Utility
US 5,562,587 · App. 08/120,672
Treatment method for urban waste incineration residues and products thus obtained
Inventors:
Beno it Kessler, Jean-Pierre Letourneux, Michel Testud, Bernard Robin
Patented Case
View Patent ↗
Granted: Oct 8, 1996
Filed: Sep 13, 1993
Inventors
Beno it Kessler
Jean-Pierre Letourneux
Michel Testud
Bernard Robin
Assignee (at issue)
Lafarge Aluminates
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.