Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4540627 | Magnetic recording medium | Toshio Hukaya, Katuya Kumagai, Tatuo Takeuchi | 1985-09-10 |
| 4511617 | Magnetic recording medium | Shozo Hideyama, Katuya Kumagai, Minoru Hashimoto | 1985-04-16 |
| 4425401 | Magnetic recording media | Tadashi Ido, Hirotaka Yokoyama, Moriyasu Wada, Toshihiko Oguchi, Yoshiyasu Koike | 1984-01-10 |
| 4284700 | Polymer coated transition metal powder as electrostatic image toner | Toshihiko Oguchi, Hiromi Yoshida | 1981-08-18 |
| 4265841 | Method for production of composite piezoelectric material | Yoshinori Fujimori, Minoru Hashimoto | 1981-05-05 |