Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8894865 | Process for depleting calcium and/or iron from geothermal brines | John L. Featherstone | 2014-11-25 |
| 8313653 | Method of removing iron and calcium from a geothermal brine | John L. Featherstone | 2012-11-20 |
| 7776202 | Process for producing electrolytic manganese dioxide | John L. Featherstone | 2010-08-17 |
| 6682644 | Process for producing electrolytic manganese dioxide from geothermal brines | John L. Featherstone | 2004-01-27 |