Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7715549 | Communication terminal device, hold melody sending method, incoming melody playing method and information storing medium | Toru Hayakawa | 2010-05-11 |
| 6944285 | Communication terminal device, holds melody sensing method, incoming melody playing and information storing medium | Toru Hayakawa | 2005-09-13 |