| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 6 | |
| #2 | Australia | 2 | |
| #3 | South Africa | 2 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Control | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Flotation | |
| #2 | Separating solids using liquids | |
| #3 | Systems controlling non-electric variables | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Macdonald John Robert | 6 |
| #2 | Macdonald John R | 1 |
| #3 | John Robert Macdonald | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB8617514D0 | Control system for froth flotation processes | |
| GB8606944D0 | Control system | |
| GB8602505D0 | Control system | |
| GB8518328D0 | Solids content determination | |
| GB8518327D0 | Control system |