Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8179271 | Key for vehicle and drunken driving preventing device | — | 2012-05-15 |
| 7570172 | Key for vehicle and drunken driving preventing device | — | 2009-08-04 |
| 7523802 | Safe-driving promotion system and safe-driving promotion device | — | 2009-04-28 |
| D539116 | Key | — | 2007-03-27 |
| D538134 | Key | — | 2007-03-13 |
| 6932429 | Safety seat for children | — | 2005-08-23 |
| D491735 | Backboard of safety seat for children | — | 2004-06-22 |
| 6601916 | Child seat | — | 2003-08-05 |
| D467085 | Safety seat for a child | — | 2002-12-17 |