| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 6 | |
| #2 | Germany | 3 | |
| #3 | United States | 3 | |
| #4 | United Kingdom | 2 | |
| #5 | Australia | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Materials and metallurgy | |
| #3 | Basic materials chemistry |
| # | Technology | |
|---|---|---|
| #1 | Furnaces | |
| #2 | Gas, coke and tar production | |
| #3 | Heat-exchanger without contact | |
| #4 | Metal tempering | |
| #5 | Fluid heaters | |
| #6 | Alloys |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hermansen Axel | 6 |
| #2 | Axel Hermansen | 4 |
| Publication | Filing date | Title |
|---|---|---|
| GB292781A | Improvements relating to tunnel kilns | |
| US1554631A | Open-hearth furnace | |
| US1554632A | Open-hearth furnace | |
| US1544905A | Heat economizer | |
| GB157243A | An improved heating stove | |
| AU765906B | Improvements inthe construction of regenerators |