Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5358700 | Method of extracting zinc from brines | Patrick M. Brown, Jerry Dobson, Eugenio Iasillo | 1994-10-25 |
| 5320759 | Selective recovery of heavy metals using xanthates | — | 1994-06-14 |