| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 4 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 3 | |
| #4 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Special electric heating or lighting | |
| #2 | Pig-iron processing | |
| #3 | Iron and steel production |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kjellin Fredrik Adolf | 10 |
| #2 | Fredrik Adolf Kjellin | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB190925244A | Improvement in or relating to the Treatment of Ores in Blast Furnaces. | |
| US983453A | Method of treating ores by the blast-furnace process. | |
| GB190621416A | Improvements in and relating to Electrical Furnaces | |
| GB190514214A | Improvements in Electric Furnaces. | |
| US800857A | Electric furnace. | |
| US682088A | Electric furnace. |