Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6642920 | Key input device and portable telephone incorporating same | Nobuaki Osawa | 2003-11-04 |
| 6532091 | Optical digital regenerator | Tomohiro Otani, Masatoshi Suzuki, Noboru Edagawa, Shu Yamamoto | 2003-03-11 |