| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 15 | |
| #2 | EPO (European Patent Office) | 2 | |
| #3 | WIPO (World Intellectual Property Organization) | 2 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Cyclically operating valves | |
| #3 | Pumps |
| # | Name | Total Patents |
|---|---|---|
| #1 | Best Richard Graham | 4 |
| #2 | Crawford Keith | 3 |
| #3 | Clayson Andrew | 3 |
| #4 | Clayson Andrew Pacson Ltd | 1 |
| #5 | Crawford Keith D | 1 |
| #6 | Dow Les | 1 |
| #7 | Richard G Best | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB201504976D0 | Pressure relief valve | |
| GB201206753D0 | Gate Valve | |
| GB0617712D0 | Cartridge valve | |
| GB0127299D0 | Sealing system for valve stem | |
| GB9826027D0 | Valve apparatus | |
| GB9620680D0 | Apparatus and method for safety valve calibration | |
| GB9612491D0 | Rising stem valve | |
| GB9517340D0 | Needle valve | |
| GB9516581D0 | Rising stem valve | |
| GB9503610D0 | Needle valve | |
| GB9417909D0 | Needle valve | |
| GB9016965D0 | Hydraulic reciprocating drive apparatus | |
| GB8920378D0 | Flow control valve |