Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5651952 | Process for the production of litharge (PbO) | Ronald Colin Grudnoff | 1997-07-29 |
| 5215572 | Process and apparatus for absorption of zinc vapour in molten lead | — | 1993-06-01 |
| 4741770 | Zinc smelting process using oxidation zone and reduction zone | Barry S. Andrews, James Dixon Iley, Gregorey J. Hardie, Michael John Hollitt | 1988-05-03 |