Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7444163 | Mobile digital devices | Atsushi Furukawa, Akiko Inami, Yachiyo Itou, Takashi Sugiyama, Noriyoshi Usui +1 more | 2008-10-28 |
| 5077784 | Visible telephone | Tsutomu Fujita, Yoshinobu Ido, Masaaki Sugihara, Tsuneyoshi Yamada, Takashi Sugiyama +1 more | 1991-12-31 |