Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11912582 | Systems and methods to recover value-added materials from gypsum | Barry E. Sheetz, Leonard Passmore, Joseph D. Preston | 2024-02-27 |
| 11479472 | Systems and methods to recover value-added materials from gypsum | Barry E. Sheetz, Leonard Passmore, Joseph D. Preston | 2022-10-25 |
| 11148956 | Systems and methods to treat flue gas desulfurization waste to produce ammonium sulfate and calcium carbonate products | Barry E. Scheetz, Joseph D. Preston | 2021-10-19 |
| 11066723 | Systems and methods to chemically treat metal-bearing waste streams to recover value-added materials | Barry E. Scheetz, Joseph D. Preston | 2021-07-20 |