Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8136376 | Electric lock device | Takahiro Okada | 2012-03-20 |
| 7975516 | Electric steering lock apparatus | Takahiro Okada, Ryuichi Yoshida, Yoshio Watanuki | 2011-07-12 |
| 7810363 | Electric steering locking apparatus | Takahiro Okada | 2010-10-12 |
| 7412858 | Electric steering lock device | Koichiro Sugimoto | 2008-08-19 |
| 6460386 | Electronic key structure | Yoshio Watanuki, Satoshi Ogata | 2002-10-08 |
| 6442985 | Lock apparatus and lock system | Yoshio Watanuki, Masaki Tamura, Shigeo Chiba | 2002-09-03 |
| 6389856 | Lock apparatus | Yoshio Watanuki, Satoshi Ogata | 2002-05-21 |
| 6382003 | Lock apparatus | Yoshio Watanuki, Satashi Ogata | 2002-05-07 |
| 5428978 | Cylinder lock device resistible against unauthorized unlocking | — | 1995-07-04 |