Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4371151 | Blast furnace smelting of zinc | John Clarke | 1983-02-01 |
| 4340423 | Charging of zinc-smelting blast furnaces | — | 1982-07-20 |
| 4265644 | Condensation of metal vapor | — | 1981-05-05 |
| 4212667 | Blast furnace smelting of zinc | Colin Frank Harris | 1980-07-15 |