| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | EPO (European Patent Office) | 4 | |
| #3 | Australia | 2 | |
| #4 | Canada | 2 | |
| #5 | United Kingdom | 1 | |
| #6 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Unspecified technologies | |
| #3 | Nails | |
| #4 | Fire-fighting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Burton Philip J | 7 |
| #2 | Burton Philip Joseph | 6 |
| #3 | Snape Christopher J | 2 |
| #4 | Beauchamp David Colston | 2 |
| #5 | Beauchamp David C | 2 |
| #6 | Burton Philip Joseph Mildenhal | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB9109456D0 | Valves having a turnable valve member | |
| EP0378342A1 | Valves having a turnable closure member such as a butterfly valve | |
| US4898363A | Butterfly and ball valves | |
| US4560142A | Butterfly and ball valves | |
| EP0074782A1 | Butterfly valve | |
| US4244387A | Rotary valve with temperature responsive seal means | |
| US4271858A | Butterfly valve having temperature responsive sealing means |