| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 4 | |
| #2 | Germany | 3 | |
| #3 | France | 3 | |
| #4 | Italy | 3 | |
| #5 | Japan | 1 | |
| #6 | Netherlands | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Transport | |
| #3 | Chemical engineering | |
| #4 | Thermal processes | |
| #5 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Pistons and sealings | |
| #2 | Aeroplanes | |
| #3 | Cleaning heat-exchanger internal surfaces | |
| #4 | Cleaning | |
| #5 | Animal care |
| # | Name | Total Patents |
|---|---|---|
| #1 | Broadhurst Jeffrey Charles | 2 |
| #2 | Robaato Uentowaasu Deebisu | 1 |
| #3 | Davis Robert Wentworth | 1 |
| #4 | Metcalfe Kenneth | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1589269A | Rotary face seal | |
| US4029272A | Variable-geometry aircraft seal | |
| GB1546081A | Variable-geometry aircraft | |
| GB1380522A | Face seal | |
| GB1329206A | Bullet or pig for cleaning pipes and tubes |