Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11511742 | Vehicle control device | — | 2022-11-29 |
| 6375701 | Method of judging slag forming state in electric furnace steel production and method of operating electric furnace | Katsutoshi Yamashita, Toyohito Nakahara | 2002-04-23 |
| 5853659 | Steel, steel sheet having excellent workability and method of producing the same by electric furnace-vacuum degassing process | Takashi Sekita, Taro Yahiro, Saiji Matsuoka, Toshio Fujimura, Takemi Yamamoto +2 more | 1998-12-29 |
| 4452634 | Method of stirring molten metal and refractory cylinder for the purpose | Yukio Oguchi, Norio Sumida, Tetsuya Fujii, Toshihiko Emi, Toshio Fujimura | 1984-06-05 |
| 4427444 | Method of refining molten metal with stirring by repeated operation of suction and discharge | Norio Sumida, Yukio Oguchi, Tetsuya Fujii, Toshihiko Emi, Toshio Fujimura +1 more | 1984-01-24 |