| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | Canada | 4 | |
| #3 | Australia | 3 | |
| #4 | WIPO (World Intellectual Property Organization) | 2 | |
| #5 | South Africa | 2 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Environmental technology | |
| #3 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Krofchak David | 17 |
| #2 | Berardi Roberto | 6 |
| #3 | Dresler Werner | 4 |
| Publication | Filing date | Title |
|---|---|---|
| CA2344129A1 | Assaying and/or recovering precious metals | |
| US6440194B1 | Recovery of precious metals from metal alloys produced aluminothermically from base metal smelter slag | |
| US6033467A | Method of making cement or mine backfill from base metal smelter slag | |
| US5968258A | Method of making cement from base metal smelter slag | |
| US5865872A | Method of recovering metals and producing a secondary slag from base metal smelter slag | |
| CA2273908A1 | A method of making cement from base metal smelter slag |