| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines | |
| #3 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Separating solids using liquids | |
| #2 | Furnaces | |
| #3 | Unspecified technologies | |
| #4 | Magnetic or electrostatic solid separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Richards Robert H | 11 |
| #2 | Coggin Frederick G | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1533572A | Furnace | |
| US1359105A | Method of concentrating ores | |
| US1197399A | Vanner. | |
| US1176403A | Pulsator riffle-jig. | |
| US1197398A | Concentrating-table. | |
| CA137222A | Classifier | |
| CA136321A | Mineral classifying apparatus | |
| US1129522A | Classifier. | |
| US1170848A | Apparatus for and process of classifying minerals. | |
| US943101A | Apparatus for classifying minerals. | |
| CA18663A | Ore and mineral separator |