Granted Patent
Utility
US 6,726,845 · App. 09/701,160
Dextran starch and flocculant combination for improving red mud clarification
Inventors:
Scott Barham, James Morton Tippett
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Feb 15, 2001
Inventors
Scott Barham
James Morton Tippett
Assignee (at issue)
Ondeo Nalco Company
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.