| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Switzerland | 2 | |
| #3 | Denmark | 2 | |
| #4 | Spain | 2 | |
| #5 | France | 2 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Thermal processes | |
| #3 | Environmental technology | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Air-conditioning | |
| #2 | Unspecified technologies | |
| #3 | Mixing | |
| #4 | Water treatment | |
| #5 | Separation | |
| #6 | Climate change mitigation in buildings |
| # | Name | Total Patents |
|---|---|---|
| #1 | White Frederick | 3 |
| #2 | Air Company Regenerated Cold | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US810451A | Apparatus for treating air. | |
| US810450A | Apparatus for treating air. | |
| US864346A | Apparatus for modifying air. |