Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6187259 | Method for preparing rare-earth system sintered magnet | Osamu Yamashita, Wataru Takahashi, Nobushige Hiraishi, Yoshiyuki Hashimasa, Masakazu Ohkita | 2001-02-13 |
| 5527504 | Powder mixture for use in compaction to produce rare earth iron sintered permanent magnets | Nobushige Hiraishi, Wataru Takahashi, Masakazu Ohkita, Naoyuki Ishigaki, Yutaka Matsuura | 1996-06-18 |
| 5486224 | Powder mixture for use in compaction to produce rare earth iron sintered permanent magnets | Nobushige Hiraishi, Wataru Takahashi, Masakazu Ohkita, Naoyuki Ishigaki, Yutaka Matsuura | 1996-01-23 |