Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12227426 | Process for recovery of lithium from a geothermal brine | Paul J. Hanson, Michael J. Garska, Charles R. Marston | 2025-02-18 |
| 10604414 | System and process for recovery of lithium from a geothermal brine | Paul J. Hanson, Michael J. Garska, Charles R. Marston | 2020-03-31 |
| 9828264 | Hydrogen sulfide abatement in geothermal facilities | Gregory F. Jacobs, Henry Castanieto, Steven J. Butler | 2017-11-28 |
| 8894865 | Process for depleting calcium and/or iron from geothermal brines | George Furmanski | 2014-11-25 |
| 8313653 | Method of removing iron and calcium from a geothermal brine | George Furmanski | 2012-11-20 |
| 7776202 | Process for producing electrolytic manganese dioxide | George Furmanski | 2010-08-17 |
| 6682644 | Process for producing electrolytic manganese dioxide from geothermal brines | George Furmanski | 2004-01-27 |
| 6458184 | Recovery of zinc from geothermal brines | — | 2002-10-01 |
| 6080696 | Method for cleaning fouled ion exchange resins | Hilton Duke, Charles R. Marston | 2000-06-27 |
| 5462668 | Use of steam to condensate to dilute brine stream additives | Darrell L. Gallup, Carl E. Flint | 1995-10-31 |
| 5413718 | Use of added water to achieve 100% injection weight in geothermal operations | Darrell L. Gallup | 1995-05-09 |
| 5409614 | Control of scale deposition in geothermal operations | Darrell L. Gallup | 1995-04-25 |
| 5288411 | Control of scale deposition in geothermal operations | Darrell L. Gallup | 1994-02-22 |
| 5268108 | Control of scale deposition in geothermal operations | Darrell L. Gallup | 1993-12-07 |
| 5240687 | Brine treatment | Darrell L. Gallup, Allen W. Doty, Morton M. Wong, Charles F. Wong, Jessie P. Reverente +1 more | 1993-08-31 |
| 5182027 | Process for treating ammonia and nitrite containing waters to reduce nitrogen oxide emissions therefrom | Darrell L. Gallup | 1993-01-26 |
| 5167834 | Process for treating nitrite-and sulfide-containing water to reduce nitrogen oxide and hydrogen sulfide emissions therefrom | Darrell L. Gallup | 1992-12-01 |
| 5145515 | Treatment of brine | Darrell L. Gallup, Jessie P. Reverente, Philip H. Messer, Allen W. Doty | 1992-09-08 |
| 5145656 | Brine treatment | Darrell L. Gallup, Allen W. Doty, Morton M. Wong, Charles F. Wong, Jessie P. Reverente +1 more | 1992-09-08 |
| 5098578 | Treatment of geothermal brine | Darrell L. Gallup | 1992-03-24 |
| 5082492 | Recovery of precious metals from aqueous media | Darrell L. Gallup, Jessie P. Reverente, Philip H. Messer | 1992-01-21 |
| 5032284 | Process for treating ammonia and nitrite containing waters to prevent nitric oxide emissions therefrom | Darrell L. Gallup | 1991-07-16 |
| 4978457 | Method of filtering a brine | Darrell L. Gallup | 1990-12-18 |
| 4874529 | Process and apparatus for reducing the concentration of suspended solids in clarified geothermal brine | S. Timothy Spang, David G. Newell, Darrell L. Gallup | 1989-10-17 |
| 4869066 | Method for the production of usable steam and non-toxic solids from geothermal brine | D. Stephen Pye, Darrell L. Gallup, Gregory A. Gritters, Daniel Hoyer, Morton M. Wong | 1989-09-26 |