Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6411515 | Amplifier | Yuzuru Sakamoto, Masuo Shiratori | 2002-06-25 |
| D402957 | Battery charger for portable wireless phone | Tatsuo Kuwayama, Hiroshi Fujiwara | 1998-12-22 |
| D392646 | Holder for portable wireless car telephone | Tatsuo Kuwayama, Hiroshi Fujiwara | 1998-03-24 |
| D388431 | Portable wireless telephone | Tatsuo Kuwayama, Takao Kumakoshi, Hiroshi Fujiwara | 1997-12-30 |
| D310366 | Portable radio telephone | Kazuo Akaike, Masahiko Kobayashi, Osamu Utsunomiya, Ryuichi Takahashi | 1990-09-04 |