| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 4 | |
| #2 | United States | 4 | |
| #3 | South Africa | 4 | |
| #4 | Brazil | 3 | |
| #5 | Canada | 3 | |
| #6 | EPO (European Patent Office) | 3 | |
| #7 | Finland | 3 | |
| #8 | France | 3 | |
| #9 | Ireland | 3 | |
| #10 | Israel | 3 | |
| #11 | Italy | 3 | |
| #12 | Mexico | 3 | |
| #13 | Norway | 3 | |
| #14 | Portugal | 3 | |
| #15 | Argentina | 1 | |
| #16 | Republic of Korea | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Cyclones |
| # | Name | Total Patents |
|---|---|---|
| #1 | Prinsloo Willem Johannes Chris | 29 |
| #2 | Villiers Pierre De | 23 |
| #3 | Dijken Marten Cornelis Van | 18 |
| #4 | De Villiers Pierre | 14 |
| #5 | Van Dijken Marten C | 7 |
| #6 | Pierre De Villiers | 7 |
| #7 | Prinsloo Willem J C | 7 |
| #8 | Van Dijken Marten Cornelis | 6 |
| #9 | Willem Johannes Christian Prin | 6 |
| #10 | Marten Cornelis Van Dijken | 6 |
| Publication | Filing date | Title |
|---|---|---|
| US5002671A | Hydro-cyclone with circulation outlet for boundary layer flow | |
| ZA8904282B | Hydro-cyclone | |
| ZA8904150B | Vortex tube separating device | |
| ZA8904149B | Vortex tube separating device | |
| ZA8904148B | Vortex tube separating device | |
| CA1327949C | Vortex tube separating device | |
| CA1327948C | Vortex tube separating device |