IP Library Granted Patent US 4,519,880
Granted Patent Utility
US 4,519,880 · App. 06/540,520

Processes for the recovery of cyanide from aqueous thiocyanate solutions and detoxication of aqueous thiocyanate solutions

Inventors: John J. Byerley, Kurt Enns
Patented Case View Patent ↗
Granted: May 28, 1985 Filed: Oct 7, 1983
Inventors
John J. Byerley
Kurt Enns

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 4,519,880
App. No.
06/540,520
Filed
1983-10-07
Granted
1985-05-28
Kind
A