Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6449250 | Method for switching central device and a cable modem system using the same | Takaya Yamamoto | 2002-09-10 |
| 6351469 | Sound/data sharing communications system | Masaharu Matsumoto, Koji Yano, Atsuo Serikawa, Takaya Yamamoto | 2002-02-26 |