Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7227482 | Complex band-pass filter for use in digital radio receiver and complex band-pass Δ-Σ AD modulator using the same | Hao San, Haruo Kobayashi, Hiroki Wada, Akira Hayakawa, Hiroyuki Hagiwara +2 more | 2007-06-05 |
| 5113090 | Voltage comparator | Eiki Imaizumi, Kunihiko Usui, Tatsuji Matsuura, Seiichi Ueda, Hiroshi Sato | 1992-05-12 |
| 4825287 | Digital video signal processor | Toru Baji, Tatsuji Matsuura, Shinya Ohba | 1989-04-25 |
| 4745393 | Analog-to-digital converter | Seiichi Ueda, Tatsuji Matsuura, Yuichi Nakatani, Eiki Imaizumi | 1988-05-17 |
| 4368457 | Analog-to-digital converter | Hisashi Tsuruoka, Michio Hara | 1983-01-11 |
| 4250493 | Analog-to-digital converter employing constant-current circuit incorporating MISFET | Toshimasa Kihara | 1981-02-10 |