Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6940977 | Digital video and audio data encryption, decryption and system authentication | — | 2005-09-06 |
| 6721895 | Data communications system and data communications method | — | 2004-04-13 |
| 6678381 | Ultra-directional speaker | — | 2004-01-13 |
| 6556687 | Super-directional loudspeaker using ultrasonic wave | — | 2003-04-29 |
| 6424726 | Image data encoding system and image inputting apparatus | Hirotaka Nakano, Masahiro Hashimoto | 2002-07-23 |
| 6298142 | Image data encoding system and image inputting apparatus | Hirotaka Nakano, Masahiro Hashimoto | 2001-10-02 |