Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8905848 | Server system, game device, control method, program, and information storage medium | Takashi Umaki, Yoshitaka Watanabe, Yukio Ooba, Shigeo Hashimoto | 2014-12-09 |
| 6444887 | String-plucking type electronic musical instrument with photo sensor for generating signal for sound | Isamu Kubota | 2002-09-03 |
| 5173566 | Apparatus for rapid reference to musical scales | — | 1992-12-22 |