| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 9 | |
| #2 | United States | 3 | |
| #3 | Switzerland | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Electrical machinery and energy | |
| #3 | Thermal processes | |
| #4 | Chemical engineering | |
| #5 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Ammonia or cyanogen | |
| #2 | Details of furnaces | |
| #3 | Special electric heating or lighting | |
| #4 | Non-metallic elements | |
| #5 | Unspecified technologies | |
| #6 | Mixing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Theodor Thorssell Carl | 3 |
| #2 | Reinhold Lunden Harald Ludvig | 2 |
| #3 | Otto Troell | 1 |
| #4 | Aktiebolaget Kvafveindustri | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1466571A | Process for agglomerating pulverous materials | |
| US1490546A | Apparatus for producing pure nitrogen | |
| GB141656A | Method for the heating of material or the performance of chemical processes in electrical furnaces, together with apparatus intended therefor | |
| US1342834A | Process for fixing nitrogen |