| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 124 | |
| #2 | France | 41 | |
| #3 | United States | 32 | |
| #4 | Germany | 31 | |
| #5 | Japan | 14 | |
| #6 | Netherlands | 14 | |
| #7 | Sweden | 12 | |
| #8 | Switzerland | 7 | |
| #9 | Canada | 4 | |
| #10 | EPO (European Patent Office) | 4 | |
| #11 | India | 4 | |
| #12 | Italy | 4 | |
| #13 | South Africa | 4 | |
| #14 | Australia | 3 | |
| #15 | Belgium | 3 | |
| #16 | Spain | 3 | |
| #17 | Denmark | 2 | |
| #18 | Greece | 1 | |
| #19 | Malaysia | 1 | |
| #20 | Singapore | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Transport | |
| #4 | Thermal processes | |
| #5 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Pistons and sealings | |
| #2 | Unspecified technologies | |
| #3 | Marine propulsion | |
| #4 | Shaping of plastics | |
| #5 | Pipes | |
| #6 | Heat-exchange device details | |
| #7 | Fillers | |
| #8 | Unspecified technologies | |
| #9 | Certain plastics | |
| #10 | Measuring length, angles and areas |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wilkinson Samuel Clifford Walt | 63 |
| #2 | Kemp John | 19 |
| #3 | Walter Wilkinson Samuel Cliffo | 16 |
| #4 | Luxford Geoffrey | 8 |
| #5 | Wilkinson Samuel C W | 8 |
| #6 | Wilkinson S | 7 |
| #7 | Lowe David James | 6 |
| #8 | Masom Grant Anthony | 6 |
| #9 | Wilkinson Francis Clarence Wal | 5 |
| #10 | Parmar Amrat | 4 |
| Publication | Filing date | Title |
|---|---|---|
| GB8803832D0 | Mechanical face seals | |
| US4759554A | Mechanical face seals | |
| GB8625391D0 | Mechanical face seals | |
| GB8625207D0 | Mechanical face seals | |
| GB8616458D0 | Mechanical face seals | |
| GB8616459D0 | Mechanical face seals | |
| GB8527022D0 | Mechanical face seals | |
| GB8517715D0 | Gas tight seal | |
| GB8504931D0 | Mechanical face seal | |
| GB8501097D0 | Packing rings | |
| GB8417037D0 | Face seals | |
| GB8417036D0 | Monitoring mechanical face seals | |
| GB8405628D0 | Mechanical face seals | |
| GB8332565D0 | Seals | |
| GB8330256D0 | Mechanical face seals | |
| ZA8302719B | Seal assembly | |
| US4463958A | Mechanical face seals | |
| GB8301858D0 | Mechanical face seals | |
| CA1199656A | Liquid-tight closure seal | |
| GB2109875A | Sealing arrangements |