Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7481698 | Sintered rare earth magnetic alloy wafer surface grinding machine | Kiyoshi Yamada, Hirofumi Takei, Masami Kamada | 2009-01-27 |
| 7273405 | Sintered rare earth magnetic alloy wafer and wafer surface growing machine | Kiyoshi Yamada, Hirofumi Takei, Masami Kamada | 2007-09-25 |
| 6994756 | Method of producing sintered rare earth magnetic alloy wafer | Kiyoshi Yamada, Hirofumi Takei, Masami Kamada | 2006-02-07 |