IP Library Granted Patent US 4,366,128
Granted Patent Utility
US 4,366,128 · App. 06/192,766

Removal of arsenic from aqueous solutions

Inventors: Donald R. Weir, Ian M. Masters
Patented Case View Patent ↗
Granted: Dec 28, 1982 Filed: Oct 1, 1980
Inventors
Donald R. Weir
Ian M. Masters
Assignee (at issue)
Sherritt Gordon Mines Limited

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,366,128
App. No.
06/192,766
Filed
1980-10-01
Granted
1982-12-28
Kind
A