Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5680896 | Method for production of rare earth metal-nickel hydrogen occlusive alloy ingot | Kazuhiko Yamamoto, Yuichi Miyake, Chikara Okada | 1997-10-28 |
| 5478664 | Method of recovering reusable metals from nickel-hydrogen rechargeable battery | Akihito Kaneko, Chikara Okada | 1995-12-26 |
| 5470404 | Rare earth metal-nickel hydrogen occlusive alloy ingot | Kazuhiko Yamamoto, Yuichi Miyake, Chikara Okada | 1995-11-28 |