| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 55 | |
| #2 | Canada | 11 | |
| #3 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines | |
| #3 | Materials and metallurgy | |
| #4 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Flotation | |
| #2 | Unspecified technologies | |
| #3 | Metal production and refining | |
| #4 | Separating solids using liquids | |
| #5 | Mixing | |
| #6 | Climate change mitigation in goods production |
| # | Name | Total Patents |
|---|---|---|
| #1 | Callow John M | 14 |
| #2 | Perkins Clement L | 13 |
| #3 | Sayre Ralph E | 12 |
| #4 | Terry Jr Joseph T | 5 |
| #5 | Bacon Raymond F | 5 |
| #6 | Thompson John W | 4 |
| #7 | Corliss Harry P | 4 |
| #8 | Bragg Gilbert A | 3 |
| #9 | Linwood Perkins Clement | 2 |
| #10 | Kelly David J | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2428228A | Process of separating valuable materials from grinding dusts and sludges | |
| US1619790A | Concentration of slimes by flotation | |
| US1640218A | Concentration of ores | |
| US1497699A | Concentration of ores | |
| US1486297A | Process for concentrating mixed sulphide ores | |
| US1478697A | Selective flotation of minerals | |
| US1378562A | Flotation of minerals | |
| US1364858A | Flotation of minerals | |
| US1370357A | Flotation of minerals | |
| US1364859A | Flotation of minerals | |
| US1370366A | Flotation of minerals | |
| US1370367A | Flotation of minerals | |
| US1370843A | Flotation of minerals | |
| GB154702A | Concentration of bituminous coal by flotation | |
| US1364304A | Flotation of minerals | |
| US1364306A | Flotation of minerals | |
| US1364305A | Flotation of minerals | |
| US1364308A | Flotation of minerals | |
| US1394639A | Flotation agent | |
| US1394640A | Concentration of minerals |