Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814238 | Magneto-optical recording medium | Shinsuke Tanaka, Nobutake Imamura | 1989-03-21 |
| 4559573 | Magneto-optical recording medium | Shinsuke Tanaka, Fujio Tanaka, Yasuyuki Nagao, Nobutake Imamura | 1985-12-17 |
| 4477852 | Magneto-optical recording and reproducing system | Nobutake Imamura, Shinsuke Tanaka | 1984-10-16 |
| 4456998 | Semiconductor laser | Fujio Tanaka, Yasuyuki Okamura, Yukitoshi Kushiro, Shigeyuki Akiba | 1984-06-26 |
| 4417290 | Multi-layer magneto-optical recording medium | Shinsuke Tanaka, Nobutake Imamura | 1983-11-22 |
| 4412264 | Magneto-optic recording medium | Nobutake Imamura | 1983-10-25 |
| 4410994 | Semiconductor laser | Yasuharu Suematsu, Yoshio Itaya | 1983-10-18 |
| 4340966 | Semiconductor laser with buffer layer | Shigeyuki Akiba, Yasuharu Suematsu, Shigehisa Arai, Masanobu Kodaira, Yoshio Itaya +3 more | 1982-07-20 |
| 4257033 | Fault locating system in optical fiber transmission system | Norio Seki, Haruo Sakaguchi | 1981-03-17 |