| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 6 | |
| #2 | France | 4 | |
| #3 | Germany | 3 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Mechanical elements | |
| #3 | Optics | |
| #4 | Basic materials chemistry | |
| #5 | Engines, pumps and turbines | |
| #6 | Textiles and paper | |
| #7 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Lubricating | |
| #3 | Woven fabrics | |
| #4 | Processing photographic materials | |
| #5 | Vehicle tyre repairing | |
| #6 | Lubricating of machines | |
| #7 | Lubricating compositions |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sweetland Ernest John | 4 |
| Publication | Filing date | Title |
|---|---|---|
| GB275779A | Improvements in or relating to filters | |
| GB275333A | Improvements in filters | |
| GB207212A | Improvements in or relating to a method and apparatus for reconditioning used oil in the lubricating system of an automobile engine | |
| GB201353A | Improvements in apparatus for reconditioning used oil in the lubricating system of an internal combustion engine | |
| GB199752A | Improvements in or relating to filtering the oil in lubricating systems of internal combustion engines |