Granted Patent
Utility
US 6,479,573 · App. 09/950,871
Process for thickening an aqueous system
Inventors:
Charles L. Burdick, Arjun C. Sau
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Sep 12, 2001
Inventors
Charles L. Burdick
Arjun C. Sau
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.