Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880289 | Two-way optical transmission system | Katsuyuki Imoto, Akihiko Takase, Atsushi Takai, Tsutomu Yoshiya, Shoji Yamada | 1989-11-14 |
| 4834491 | Semiconductor laser module of dual in-line package type including coaxial high frequency connector | Atsushi Murata | 1989-05-30 |