Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4902491 | Phosphate feed material for phosphorus electric furnaces and production of same | Joseph H. Finley, Lewis L. Hammermeister | 1990-02-20 | $3,400,000 |
| 4822583 | Phosphate feed material for phosphorus electric furnaces and production of same | Joseph H. Finley, Lewis L. Hammermeister | 1989-04-18 | $3,098,000 |