Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4451502 | Method for manufacturing magnetic recording medium | Kazuo Takada | 1984-05-29 |
| 4363831 | Process for producing magnetic powder having high coercive force | Kazuo Takada | 1982-12-14 |
| 4323464 | Process for producing hydrated iron oxide having silicon and phosphorus component | — | 1982-04-06 |
| 4321302 | Process for producing magnetic powder having high coercive force | Toshihiro Hamabata, Kazuaki Onuki, Kazuo Takada | 1982-03-23 |
| 4311684 | Process for producing iron oxide containing magnetite | — | 1982-01-19 |
| 4305921 | Process for producing iron oxide | — | 1981-12-15 |
| 4302510 | Magnetic recording medium | Kazuaki Onuki, Fumio Maruta | 1981-11-24 |
| 4255409 | Process for producing acicular goethite | Toshihiro Hamabata | 1981-03-10 |
| 4251504 | Process for producing acicular goethite | Toshihiro Hamabata | 1981-02-17 |