Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6235257 | Process waters in phosphate manufacturing | R. George Hartig | 2001-05-22 |
| 5316748 | Phosphoric acid manufacturing with converted waters | R. George Hartig | 1994-05-31 |
| 5171452 | Phosphoric acid wastewater treatment | R. George Hartig | 1992-12-15 |
| 4320012 | Neutralization of phosphoric acid waste waters | R. George Hartig | 1982-03-16 |