| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 6 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 | |
| #4 | Canada | 2 | |
| #5 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Environmental technology | |
| #3 | Machines | |
| #4 | Weapons | |
| #5 | Mechanical elements | |
| #6 | Chemical engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Jubb Albert | 8 |
| #2 | Duckworth David Keith | 3 |
| #3 | Morley Frederick William Walto | 3 |
| #4 | Roper Jeffrey | 2 |
| #5 | Field John Charles | 1 |
| #6 | Duckworth David K | 1 |
| #7 | Morley Frederick W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB8910473D0 | Piston | |
| GB8601148D0 | Closed-cycle piston i.c.engine | |
| CA1247496A | Apparatus for and a method of transferring liquid | |
| GB8516096D0 | Apparatus for and a method of transferring liquid | |
| EP0118284A1 | Internal combustion engines | |
| GB2131319A | Filter element |