Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4744971 | Process for treatment of phossy water for recycling | Gordon H. Scherbel, David A. Crea, Ronald L. Andersen, Byron L. Nichols | 1988-05-17 |
| 4595492 | Recovery of phosphorus from dilute waste streams | David A. Crea, James A. Robertson | 1986-06-17 |
| 4462973 | Phosphorus purification | David A. Crea | 1984-07-31 |