Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7543755 | Electronic key, electronic locking apparatus, electronic security system, and key administering server | Kenji Doi, Takashi Nishiyama, Ryouji Nakajima, Masaru Hashimoto, Kenshi Suzuki +1 more | 2009-06-09 |