Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5372630 | Direct sulphidization fuming of zinc | Kevin A. Foo, Rodney L. Leonard, Richard S. Celmer | 1994-12-13 |
| 5350158 | Metallurgical lance and method of cooling the lance | — | 1994-09-27 |