Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5346627 | Method for removing metals from a fluid stream | Kristine S. Siefert, John W. Sparapany, John H. Collins | 1994-09-13 |
| 5328599 | System using sulfide ion-selective electrodes for control of chemical feed of organic sulfide products for metal ion precipitation from waste water | Kristine S. Siefert, Wayne M. Carlson | 1994-07-12 |