Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5733471 | Magnetite particles and process for production of the same | Masachika Hashiuchi, Katsuhiko Yoshimaru | 1998-03-31 |
| 5556571 | Magnetite particles and process for preparing the same | Masachika Hashiuchi, Takeshi Miyazono, Hiroyuki Watanabe | 1996-09-17 |
| 5356712 | Magnetite particles | Masachika Hashiuchi, Akira Oyama | 1994-10-18 |