Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6710789 | Device and method for authorizing use of a pre-coded display area | Taketo Yoshii, Kouichi Yasutake, Kazuo Okamura | 2004-03-23 |
| 6711620 | Event control device and digital broadcasting system | Taketo Yoshii, Satoshi Tsujimura, Keisei Yamamuro | 2004-03-23 |