Granted Patent
Utility
US 6,824,690 · App. 10/269,596
Zirconium-modified materials for selective adsorption and removal of aqueous arsenic
Inventors:
Hongting Zhao, Robert C. Moore
Patented Case
View Patent ↗
Granted: Nov 30, 2004
Filed: Oct 11, 2002
Inventors
Hongting Zhao
Robert C. Moore
Assignee (at issue)
Sandia Corporation
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.