| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 3 | |
| #2 | United States | 3 | |
| #3 | Argentina | 2 | |
| #4 | Canada | 2 | |
| #5 | EPO (European Patent Office) | 2 | |
| #6 | Portugal | 2 | |
| #7 | South Africa | 2 | |
| #8 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines | |
| #3 | Measurement | |
| #4 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Unspecified technologies | |
| #3 | Transport or storage devices | |
| #4 | Unspecified technologies | |
| #5 | Measuring force, work and fluid pressure |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sundseth Jarl | 9 |
| Publication | Filing date | Title |
|---|---|---|
| ZA8104976B | Air filters | |
| US4394145A | Air cleaners | |
| EP0044720A2 | Air pre-cleaners | |
| GB2080141A | Filter elements | |
| GB2086048A | Pressure indicator |