Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5678242 | Membrane extraction with thermodynamically unstable diphosphonic acid derivatives | Ralph C. Gatrone, KENNETH L NASH | 1997-10-14 |
| 5587142 | Method of dissolving metal oxides with di- or polyphosphonic acid and a redundant | Renato Chiarizia | 1996-12-24 |
| 5332531 | Extracting metal ions with diphosphonic acid, or derivative thereof | Ralph C. Gatrone, KENNETH L NASH | 1994-07-26 |
| 5078894 | Formulations for iron oxides dissolution | Renato Chiarizia | 1992-01-07 |