IP Library › Granted Patent US 5,667,694
Granted Patent Utility
US 5,667,694 · App. 08/520,317

Process for the removal of heavy metals from aqueous systems using organoclays

Inventors: Charles A. Cody, Stephen J. Kemnetz
Patented Case View Patent ↗
Granted: Sep 16, 1997 Filed: Aug 28, 1995
Inventors
Charles A. Cody
Stephen J. Kemnetz
Assignee (at issue)
Rheox Inc.

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 5,667,694
App. No.
08/520,317
Filed
1995-08-28
Granted
1997-09-16
Kind
A