Granted Patent
Utility
US 5,169,441 · App. 07/629,328
Cationic dispersion and process for cationizing finely divided particulate matter
Inventor:
Rodrigue V. Lauzon
Patented Case
View Patent ↗
Granted: Dec 8, 1992
Filed: Dec 17, 1990
Inventor
Rodrigue V. Lauzon
Assignee (at issue)
HERCULES LLC
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.