Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D433399 | Telephone | Naoko Seki, Koji Nakao, Masashi Shimoda | 2000-11-07 |
| D405799 | Internet voice gateway | — | 1999-02-16 |
| D363280 | Portable radio telephone | Katsuhito Watanabe | 1995-10-17 |
| D355183 | Portable radio telephone | Katsuhito Watanabe | 1995-02-07 |
| D352707 | Portable radiotelephone | Katsuhito Watanabe | 1994-11-22 |
| D335877 | Portable radiotelephone | Katsuhito Watanabe, Seki Naoko | 1993-05-25 |
| D330693 | Battery unit for a portable radio telephone | Katsuhito Watanabe, Naoko Seki | 1992-11-03 |
| D325908 | Portable telephone set | Naoko Seki, Katsuhito Watanabe | 1992-05-05 |