Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7834753 | Data carrier and data carrier system | Yoshikazu Sugawara, Takashi Kubo, Kikuzo Sawada, Yuming Tang | 2010-11-16 |
| 6389399 | Audio dubbing system for digital audio recorder | — | 2002-05-14 |
| 5982911 | Braille recognition system | Kiyoshi Matsumoto, Tadahiko Yabu | 1999-11-09 |
| 5920649 | Braille recognition system with ternary-coding | Mitsunobu Enomoto | 1999-07-06 |