| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Milling | |
| #2 | Unspecified technologies | |
| #3 | Magnetic or electrostatic solid separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Buchanan Charles G | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US1507661A | Wearing plate for crushers | |
| US1386764A | Crusher | |
| US1365966A | Magnetic pulley | |
| US1390019A | Crusher-roll | |
| CA146035A | Ore crusher | |
| US1149626A | Keying means for crushing-rolls. | |
| US1029910A | Crushing-machine. | |
| US1024497A | Crushing-machine. | |
| US893606A | Magnetic separator. | |
| US819976A | Crushing-machine. | |
| US789484A | Crushing-machine. | |
| CA13989A | Improvement on ore separators |