Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4455170 | Method of upgrading rock and treated rock obtained therefrom | Donald G. LeGrand | 1984-06-19 |
| 4256501 | Rock treating method and compositions | — | 1981-03-17 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4455170 | Method of upgrading rock and treated rock obtained therefrom | Donald G. LeGrand | 1984-06-19 |
| 4256501 | Rock treating method and compositions | — | 1981-03-17 |