Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6721305 | Wireless message courier | Michael C. Greenwood, Te-Kai Liu, Kiyoshi Maruyama | 2004-04-13 |
| 6711160 | Packet network telephone interface system for POTS | Nathan J. Lee, Kiyoshi Maruyama | 2004-03-23 |