Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888781 | Semiconductor laser | Etsuji Omura, Katsuhiko Goto, Harumi Namba, Akira Takemoto | 1989-12-19 |
| 4805054 | Recording and/or reproducing device for the flexible magnetic disk | Hidetoshi Kamoto, Hiroshi Yamanouchi, Toru Takamiya, Yoshimasa Gouda | 1989-02-14 |