Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6043753 | Remote-control-operated locking/unlocking system | Yoshisada Okayasu, Hiroaki Yamamoto | 2000-03-28 |
| 5940001 | Transmission and reception system for controlling locking/unlocking operation of key | Yoshisada Okayasu, Hiroaki Yamamoto | 1999-08-17 |