Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11041621 | Auxiliary burner for electric furnace | Sumito OZAWA, Koichi Tsutsumi, Ikuhiro Sumi, Kenichi Tomozawa, Takayuki Ito | 2021-06-22 |
| 10935234 | Auxiliary burner for electric furnace | Koichi Tsutsumi, Sumito OZAWA, Ikuhiro Sumi, Kenichi Tomozawa, Takayuki Ito | 2021-03-02 |