| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 6 | |
| #2 | Canada | 2 | |
| #3 | Germany | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | France | 2 | |
| #6 | Italy | 2 | |
| #7 | Japan | 2 | |
| #8 | Sweden | 2 | |
| #9 | Austria | 1 | |
| #10 | Spain | 1 | |
| #11 | Netherlands | 1 | |
| #12 | Norway | 1 | |
| #13 | United States | 1 | |
| #14 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Engines, pumps and turbines | |
| #3 | Thermal processes | |
| #4 | Measurement | |
| #5 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Non-positive-displacement pumps | |
| #3 | Domestic stoves | |
| #4 | Air-conditioning | |
| #5 | Cleaning | |
| #6 | Unspecified technologies | |
| #7 | Mechanically-driven clocks |
| # | Name | Total Patents |
|---|---|---|
| #1 | De Castella Pierre | 8 |
| #2 | Castella Pierre De | 8 |
| #3 | Reinhold Charles | 3 |
| #4 | Shiyaruru Rainhooruto | 1 |
| #5 | Pieeru Dou Kiyasutera | 1 |
| #6 | Pieeru De Kasuteria | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0481021A1 | Air purifier | |
| US4411675A | Apparatus for the purification of gases | |
| CH637307A5 | Gas fluid purification hood. | |
| DE2901448A1 | CLEANING DEVICE FOR FLOWABLE MEDIA | |
| IT1082768B | Appts. for purifying gas streams - comprises centrifugal ventilator, with absorptive filter material in turbine exit stream | |
| CA1108379A | Apparatus for cleaning gaseous fluids | |
| CH609880A5 | Gaseous fluid purifier | |
| CH606927A5 | Appts. for purifying gas streams |