Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5249177 | Structure for preventing dislocation of a spring in an optical disk cartridge | Seiichi Ohta, Chihiro Aoki, Seitaro Hamano, Yasushi Hiramatsu | 1993-09-28 |
| 5090078 | Optical disk storage container and cleaner | Seiichi Ohta, Chihiro Aoki, Seitaro Hamano, Yasushi Hiramatsu | 1992-02-25 |