Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6049559 | Method of refining metal to high degree of purity and high-frequency vacuum induction melting apparatus | Kenji Abiko, Hitoshi Kawano, Masanori Tsuda, Yasuhiro Nakai, Tadahito Nakajima +1 more | 2000-04-11 |
| 5974077 | Method of refining metal to high degree of purity and high-frequency vacuum induction melting apparatus | Kenji Abiko, Hitoshi Kawano | 1999-10-26 |