Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5085846 | Process for producing phosphorous acid | William S. Holmes | 1992-02-04 |
| 5075088 | Production of red phosphorus | William S. Holmes | 1991-12-24 |
| 4325928 | Rock treatment process | — | 1982-04-20 |
| 4296082 | Purification of wet process phosphoric acid | Michael Minshall, Arthur Wilson | 1981-10-20 |
| 4229307 | Apparatus for preparing red phosphorus | Frederick A. Ridgway | 1980-10-21 |
| 4215098 | Purification of wet process phosphoric acid | Arthur Wilson, Michael Minshall | 1980-07-29 |