Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5712347 | Grafted methylenediphosphonate ion exchange resins | Ralph C. Gatrone, Spiro D. Alexandratos, E. Philip Horwitz | 1998-01-27 |
| 5618851 | Grafted methylenediphosphonate ion exchange resins | Ralph C. Gatrone, Spiro D. Alexandratos, E. Philip Horwitz | 1997-04-08 |