Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5614805 | Method and apparatus for charging a secondary battery by supplying pulsed current as charging current | Hiroshi Momotani, Akio Hasebe, Tamiko Takeuchi | 1997-03-25 |
| 5011552 | Method for producing a rare earth metal-iron-boron permanent magnet by use of a rapidly-quenched alloy powder | Tsutomu Otsuka | 1991-04-30 |
| 4898625 | Method for producing a rare earth metal-iron-boron permanent magnet by use of a rapidly-quenched alloy powder | Tsutomu Otsuka | 1990-02-06 |