| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 13 | |
| #2 | EPO (European Patent Office) | 4 | |
| #3 | United States | 3 | |
| #4 | Norway | 2 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Mechanical elements | |
| #3 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Pistons and sealings | |
| #3 | Presses | |
| #4 | Pipes | |
| #5 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Pearson James A | 4 |
| #2 | Twizell Norman | 4 |
| #3 | Swinney Denis Percy | 4 |
| #4 | Fergusson Charles William | 2 |
| #5 | Swinney Dennis Percy | 2 |
| #6 | Fergusson Charles W | 1 |
| #7 | Swinney Denis P | 1 |
| #8 | Swinney Dennis P | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB8425068D0 | Automatic backwashing filter | |
| GB8410688D0 | Backwash filter | |
| GB8407752D0 | Filter Element Mounting | |
| GB8327198D0 | Closure for pipes/vessels | |
| GB8308588D0 | Filter | |
| GB8301908D0 | Closure for pipes or vessels | |
| GB2095614A | Compaction press | |
| EP0042722A1 | A press for the compression of loads | |
| GB2067087A | Filter | |
| GB2023017A | Filter | |
| GB1603814A | Closure for pipes or vessels | |
| GB1531975A | Closures for pressure vessels | |
| GB1367860A | Closures for containers | |
| GB1329389A | Gas relief valve |