Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6355205 | Multi-function lance for a vacuum degassing chamber and a method of using the same | Kousei Kuriwaki, Masaaki Takada | 2002-03-12 |
| 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 |