Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7184566 | Bass reflex type speaker device, mounting structure and mounting method for speaker device | Ichiro Tamura, Kazuhiro Katayama, Shuhki Ohtani | 2007-02-27 |
| 6387138 | Diesel fuel combustion system | Masayoshi Yamashita, Hideya Yoshitake | 2002-05-14 |
| 5285055 | IC card and read/write control method for controlling data readout/data write-in with respect to data storing means contained in IC card | Satoru Oonakahara, Shouichi Ooshima | 1994-02-08 |
| 4276639 | Telephone exchange with time shared speech paths and selectively attenuated speech signals | Takeo Fukuda, Kiyoshi Urui | 1981-06-30 |