Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4595492 | Recovery of phosphorus from dilute waste streams | David A. Crea, Jerry A. Keely | 1986-06-17 |
| 4457845 | Recovery of phosphorus from sludge | — | 1984-07-03 |
| 4379108 | Strengthening phosphate shale briquettes | — | 1983-04-05 |