| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 4 | |
| #2 | United States | 3 | |
| #3 | Australia | 2 | |
| #4 | Japan | 2 | |
| #5 | Canada | 1 | |
| #6 | Germany | 1 | |
| #7 | France | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Norway | 1 | |
| #10 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Steele John | 7 |
| #2 | Maikuru Aanorudo Karubaato | 2 |
| #3 | Calvert Michael Arnold | 2 |
| #4 | Calvert Michael A | 2 |
| #5 | Black Ian | 1 |
| #6 | Senger David Joseph | 1 |
| #7 | Calvert M A | 1 |
| #8 | Senger D J | 1 |
| #9 | Debitsudo Jiyosefu Sengaa | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0636822A2 | Ball valve. | |
| US4928921A | Ball valves for pipelines | |
| AU2138588A | Ball valves for pipelines | |
| CA1135677A | Ball valves | |
| GB1525193A | Ball valves |