Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4780295 | Process for purifying phosphoric acid | David P. Brochu, Richard E. Hall | 1988-10-25 |
| 4575403 | Apparatus for distilling phosphorus | Harvey Rosenhouse | 1986-03-11 |
| 4483746 | Process for phosphorus purification | Harvey Rosenhouse | 1984-11-20 |