| # | Country | Total Patents | |
|---|---|---|---|
| #1 | South Africa | 8 | |
| #2 | WIPO (World Intellectual Property Organization) | 3 | |
| #3 | Australia | 1 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Unspecified technologies | |
| #3 | Installations for obtaining water |
| # | Name | Total Patents |
|---|---|---|
| #1 | Miller James Douglas | 14 |
| Publication | Filing date | Title |
|---|---|---|
| ZA201905505B | An air release valve installation | |
| ZA201902205B | Air release valve | |
| WO2020065373A1 | Air release valve | |
| ZA201801741B | Air release valve | |
| ZA201408162B | An air release valve | |
| ZA201206498B | A pressure control valve system | |
| US2011146811A1 | Air release valve | |
| WO2008020367A2 | A break pressure tank | |
| ZA200500789B | A pressure control arrangement for a liquid flow line. | |
| ZA200210154B | "A dispenser for a liquid." |