Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6876871 | Portable information terminal | Naofumi Hirayama, Mizuki Tomono, Yoshinori Nakatsuka, Katsumi Kobayashi | 2005-04-05 |
| 6807276 | Portable telephone | Naofumi Hirayama, Mizuki Tomono, Yoshinori Nakatsuka, Katsumi Kobayashi | 2004-10-19 |