Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5143542 | Process for producing magnetic metal powder for magnetic recording | Masatsuyo Maruo, Toshihiko Kawamura | 1992-09-01 |
| 4501774 | Process for the production of cobalt-containing magnetic iron oxide powder | Kazuo Nakata, Tsuneo Ishikawa, Ichiro Honma, Masaharu Hirai, Makoto Ogasawara +1 more | 1985-02-26 |
| 4414245 | Process for producing cobalt containing ferromagnetic iron oxides | Kazuo Nakata, Tsuneo Ishikawa, Ichiro Honma, Arata Koyama, Masatoshi Amano | 1983-11-08 |