Granted Patent
Utility
US 5,876,613 · App. 08/930,444
Sludge digestion method
Inventors:
Christophe Bonnin, Gabriel Coriton
Patented Case
View Patent ↗
Granted: Mar 2, 1999
Filed: Jan 16, 1998
Inventors
Christophe Bonnin
Gabriel Coriton
Assignee (at issue)
Omnium de Traitement et de Valorisation
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.