| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 5 | |
| #2 | United States | 5 | |
| #3 | Norway | 2 | |
| #4 | Canada | 1 | |
| #5 | Switzerland | 1 | |
| #6 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Thermal processes | |
| #3 | Electrical machinery and energy | |
| #4 | Environmental technology | |
| #5 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Alloys | |
| #2 | Furnaces | |
| #3 | Pig-iron processing | |
| #4 | Special electric heating or lighting | |
| #5 | Details of furnaces | |
| #6 | Climate change mitigation in goods production | |
| #7 | Mixing | |
| #8 | Metal production and refining | |
| #9 | Magnets and transformers |
| # | Name | Total Patents |
|---|---|---|
| #1 | Matsumoto Jiro | 5 |
| #2 | Saito Yoshinobu | 4 |
| #3 | Abe Arimichi | 3 |
| #4 | Shinagawa Susumu | 3 |
| #5 | Takagi Yoshiaki | 2 |
| #6 | Itami Hitoshi | 2 |
| #7 | Sengoku Koji | 2 |
| #8 | Tabei Makoto | 2 |
| #9 | Ouchi Yasuhide | 2 |
| #10 | Jiro Matsumoto | 2 |
| Publication | Filing date | Title |
|---|---|---|
| DE2039438A1 | High strength tool steel - has in addition high temper hardness - for components in extrusion equipment | |
| US3673010A | Cold-workable permanent magnet alloy | |
| CH525543A | Cold workable magnetic alloy | |
| US3409726A | Device for stirring molten metal in an electric furnace | |
| CA855801A | Method and apparatus for melting and refining metals by direct currents |