Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D315545 | Electrical connector socket | Akihiko Sakuramoto | 1991-03-19 |
| 4882554 | Multi-drop type bus line system | Akihiko Sakuramoto | 1989-11-21 |
| 4320254 | Volume control apparatus | Kenzo Tottori, Shunichi Suganuma | 1982-03-16 |