Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5076836 | Process for the preparation of ferromagnetic metallic particles for magnetic recording | Isshi Hisaoka, Nobuo Takagi | 1991-12-31 |
| 4597958 | Method of producing hydrated iron oxide | Nobuo Takagi, Takeo Kobayashi | 1986-07-01 |