| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 15 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Electrical machinery and energy | |
| #3 | Surface technology and coating | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Electric discharge tubes | |
| #3 | Rotary-pistons | |
| #4 | Rotary pistons | |
| #5 | Pumps | |
| #6 | Coating metallic material | |
| #7 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Stones Ian David | 15 |
| #2 | Stuart Martin Nicholas | 2 |
| #3 | Holbrook Alan Ernest Kinnaird | 2 |
| #4 | Schofield Nigel Paul | 2 |
| #5 | Olsen Ian | 1 |
| #6 | Goodwin David John | 1 |
| #7 | Hockliffe Miles Geoffery | 1 |
| #8 | Horler Richard Glyn | 1 |