Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4479923 | Production of phosphoric acid and additional products from phosphate ore | John B. Sardisco, Dysart E. Holcomb | 1984-10-30 |
| 4435370 | Preparation of monocalcium phosphate and/or phosphoric acid from phosphate rock | Dysart E. Holcomb, John B. Sardisco | 1984-03-06 |
| 4393032 | Production of phosphoric acid and additional products from phosphate ore | Dysart E. Holcomb, John B. Sardisco | 1983-07-12 |
| 4371512 | Production of alkali metal sulfates | John B. Sardisco | 1983-02-01 |
| 4328196 | Production of alkali metal products from alkali metal fluosilicate | John B. Sardisco | 1982-05-04 |
| 4268492 | Process for production of potassium sulfate and hydrochloric acid | John B. Sardisco | 1981-05-19 |
| 4222990 | Production of fluoride-free phosphates | — | 1980-09-16 |
| 4191734 | Fluoride-free phosphate reactions | John B. Sardisco | 1980-03-04 |