| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Spain | 5 | |
| #2 | Denmark | 4 | |
| #3 | Austria | 2 | |
| #4 | Canada | 2 | |
| #5 | United Kingdom | 2 | |
| #6 | Switzerland | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Furnaces | |
| #2 | Unspecified technologies | |
| #3 | Heat-exchange device details |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hermansen Axel | 11 |
| #2 | Maule Carl Fox | 3 |
| #3 | Carl Fox Maule | 1 |
| #4 | Axel Hermansen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES103812A1 | Improvements in tunnel ovens. | |
| CA166606A | Furnace for metals | |
| GB191515887A | Recuperative Crucible Furnace for Fusion of Metals and Alloys. | |
| US891991A | Construction of regenerators. | |
| GB190509948A | Improvements in Regenerators for Retort and other Furnaces. | |
| CA234194A | Stove |