Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6059988 | Magnetite particles and process for production thereof | Masachika Hashiuchi, Masahiro Miwa | 2000-05-09 |
| 6013193 | Magnetite particles and process for production thereof | Masachika Hashiuchi, Masahiro Miwa | 2000-01-11 |
| 5759435 | Magnetite particles and process for production thereof | Hiroyuki Watanabe, Masachika Hashiuchi | 1998-06-02 |
| 5556571 | Magnetite particles and process for preparing the same | Masachika Hashiuchi, Hiroyuki Watanabe, Tadashi Yamanishi | 1996-09-17 |