Granted Patent
Utility
US 5,612,321 · App. 08/493,854
Antioxidant grafted polysaccharides
Inventor:
Tuyen T. Nguyen
Patented Case
View Patent ↗
Granted: Mar 18, 1997
Filed: Jun 22, 1995
Inventor
Tuyen T. Nguyen
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.