Granted Patent
Utility
US 5,651,861 · App. 08/573,710
Process for removing inks from waste paper
Inventors:
Eric H. Larson, Marie-Odile Lafon
Patented Case
View Patent ↗
Granted: Jul 29, 1997
Filed: Dec 18, 1995
Inventors
Eric H. Larson
Marie-Odile Lafon
Assignee (at issue)
Rhone-Poulenc, Inc.
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.