Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4427540 | Production of anode grade petroleum coke | Lloyd I. Grindstaff, Leslie H. Juel | 1984-01-24 |
| 4334980 | Non-puffing petroleum coke | — | 1982-06-15 |
| 4332856 | Carbon or graphite article and method of making by impregnating with a lignin sulfonate complex | — | 1982-06-01 |
| 4312745 | Non-puffing petroleum coke | Lloyd I. Grindstaff, Mack P. Whittaker | 1982-01-26 |
| 4291008 | Process for calcining and desulfurizing petroleum coke | Edward E. Hardin, Lloyd I. Grindstaff | 1981-09-22 |