| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 7 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machine tools | |
| #3 | Materials and metallurgy | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Flotation | |
| #2 | Making screws | |
| #3 | Separating solids using liquids | |
| #4 | Unspecified technologies | |
| #5 | Casting metal | |
| #6 | Separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Munro Alexander C | 17 |
| #2 | Pearse Hubert A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2229866A | Method of producing metal castings and cast products resulting therefrom | |
| US2106156A | Classification | |
| US2145269A | Apparatus for flotation of minerals | |
| US2106155A | Concentrator | |
| US2106154A | Elevator classifier | |
| US2065722A | Classification of minerals | |
| US1961239A | Ball forming machine | |
| US1937837A | Ore concentration | |
| US1890693A | Ball forming machine | |
| US1746671A | Ball-forming machine | |
| CA371754A | Mineral classifier | |
| CA352575A | Ball-forming machine | |
| CA294872A | Ball forming machine | |
| CA269559A | Grinding material | |
| CA372396A | Concentrator | |
| CA310566A | Ball forming machine | |
| CA374643A | Elevator classifier |