Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4521247 | Low temperature, non-SO.sub.2 polluting, kettle process for separation of lead from lead sulfide-containing material | Carl R. Di Martini, William L. Scott, Leo J. Bulvanoski | 1985-06-04 |
| 4333763 | Low temperature, non-SO.sub.2 polluting, kettle process for separation of lead from lead sulfide-containing material | Carl R. Di Martini, William L. Scott, Leo J. Bulvanoski | 1982-06-08 |