Granted Patent
Utility
US 6,444,653 · App. 09/569,275
Glass-like polysaccharide useful as absorbent for liquids
Inventors:
Serge Huppé, Marie-Elise Maheux, Stéphane Chevigny, Francois Quirion
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: May 11, 2000
Inventors
Serge Huppé
Marie-Elise Maheux
Stéphane Chevigny
Francois Quirion
Assignee (at issue)
Groupe Lysac 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.