| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 6 | |
| #2 | EPO (European Patent Office) | 5 | |
| #3 | United Kingdom | 5 | |
| #4 | Australia | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Cyclically operating valves | |
| #2 | Gearing | |
| #3 | Clutches and brakes | |
| #4 | Unspecified technologies | |
| #5 | Springs |
| # | Name | Total Patents |
|---|---|---|
| #1 | Walters Christopher Paulet Mel | 14 |
| #2 | Walters Christopher | 3 |
| Publication | Filing date | Title |
|---|---|---|
| GB0510214D0 | A rotational drive assembly | |
| WO2005003524A1 | Valve gear | |
| GB0315246D0 | I.c. engine valve gear | |
| GB0304057D0 | Rotary devices | |
| WO02079615A1 | Valve control mechanism and engines containing same | |
| WO0188345A1 | Valve control mechanism | |
| EP1266130A1 | Valve control mechanism | |
| GB0109938D0 | Engine with offset cam follower-valve stem arrangement | |
| AU6220899A | Valve control mechanism |