Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4902491 | Phosphate feed material for phosphorus electric furnaces and production of same | Joseph H. Finley, Lewis L. Hammermeister | 1990-02-20 |
| 4822583 | Phosphate feed material for phosphorus electric furnaces and production of same | Joseph H. Finley, Lewis L. Hammermeister | 1989-04-18 |