Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7664536 | Character communication device | Kei Nakajima, Takao Miyoshi, Yuji Naka, Shiro Maekawa | 2010-02-16 |
| 7203908 | Character communication device | Kei Nakajima, Takao Miyoshi, Yuji Naka, Shiro Maekawa | 2007-04-10 |