Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5188898 | Ferromagnetic metal particles and preparation process thereof | Kimiteru Tagawa, Seiichi Takahashi, Noritoshi Utsuno, Hideki Umehara, Shigeo Kiba +1 more | 1993-02-23 |
| 4937409 | Switch device | — | 1990-06-26 |
| 4342589 | Process for preparing iron compound particles for use in magnetic recording | Kazushi Ohshima, Mitsuro Matsunaga, Haruo Sekiguchi, Kazuhiro Imaoka | 1982-08-03 |