Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6375712 | Method of removal of light metals from aluminum | Helge O. Forberg | 2002-04-23 |
| 5628878 | Method of reducing airburning in petroleum coke | Euel R. Cutshall | 1997-05-13 |
| 5286359 | Alumina reduction cell | Alton T. Tabereaux | 1994-02-15 |
| 5129998 | Refractory hard metal shapes for aluminum production | Alton T. Tabereaux, Douglas V. Stewart | 1992-07-14 |
| 5019455 | Sow mold and sow ingot | Robert Downie, Ray D. Peterson, Roger White | 1991-05-28 |
| 4450063 | Probe for alumina concentration meter | Thomas J. Johnston, Alton T. Tabereaux | 1984-05-22 |
| 4383910 | Alumina reduction cell | — | 1983-05-17 |
| 4333813 | Cathodes for alumina reduction cells | Howard I. Kaplan, Jerry H. Bryce, Thomas J. Johnston, Curtis J. McMinn, John T. Willett | 1982-06-08 |
| T993002 | Refractory surfaces for alumina reduction cell cathodes and methods for providing such surfaces | Howard I. Kaplan, Jerry H. Bryce, Thomas J. Johnston, Jan Pottinger, Curtis J. McMinn +2 more | 1980-04-01 |