Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6535143 | Vehicle detection system | Yoshinori Morimoto | 2003-03-18 |
| 4953163 | TDM transmission system | Hirokazu Kobayashi, Syoichi Suzuki | 1990-08-28 |
| 4949394 | Addressable PCM music broadcast receiver | Kenichi Shiraishi, Hirokazu Kobayashi | 1990-08-14 |
| 4884267 | TDM transmission system | Hirokazu Kobayashi, Syoichi Suzuki | 1989-11-28 |
| 4873684 | Method and apparatus for multiplexing of input signals having differing frequencies and demultiplexing same | Hirokazu Kobayashi, Masaoki Takai, Syuichi Fujisawa, Hiroshi Miyazawa | 1989-10-10 |
| 4845436 | Frequency synthesizer suited for use in a time division multiplexing system | Hirokazu Kobayashi, Masaoki Takai, Syuichi Fujisawa, Hiroshi Miyazawa | 1989-07-04 |
| 4825436 | Time division multiplexing system for N channels in a frame unit base | Hirokazu Kobayashi, Masaoki Takai, Syuichi Fujisawa, Hiroshi Miyazawa | 1989-04-25 |
| 4431970 | Quadrature detector using a double balanced differential circuit and a constant current circuit | Tatsumi Sumi, Shiro Mizutani, Atsushi Ogawa | 1984-02-14 |
| 4393274 | AM Stereo receiver | — | 1983-07-12 |
| 4388496 | FM/AM Stereo receiver | — | 1983-06-14 |
| 4350957 | Pulse counter-type FM detector | — | 1982-09-21 |
| RE30839 | Monostable multivibrator | — | 1981-12-29 |
| 4297601 | Monostable multivibrator circuit and FM detector circuit employing predetermined load resistance and constant current to increase response rate of differential transistor pair | Takeshi Wada, Yasuo Kominami, Tsuneo Yamada | 1981-10-27 |
| RE30781 | Logarithmic amplifier | — | 1981-10-20 |
| 4293781 | Monostable multivibrator | Tsuneo Yamada | 1981-10-06 |
| 4292549 | Monostable multivibrator and FM detector circuit employing differential transistor pair (threshold) trigger circuit to avoid interference signal operation | Takeshi Wada, Masanori Ienaka, Yasuo Kominami, Tsuneo Yamada | 1981-09-29 |
| 4282448 | Monostable multivibrator and FM detector circuit employing common emitter transistor amplifier with plural emitter resistors to avoid circuit operation from signal noise | Takeshi Wada, Masanori Ienaka, Yasuo Kominami, Tsuneo Yamada | 1981-08-04 |
| 4277703 | Monostable multivibrator circuit with clamped non-saturating common emitter amplifier in feedback path | Takeshi Wada, Masanori Ienaka, Tsuneo Yamada | 1981-07-07 |
| 4268762 | Pulse forming circuit | Masanori Ienaka, Takeshi Wada, Tsuneo Yamada | 1981-05-19 |
| 4254346 | Monostable multivibrator | Tsuneo Yamada | 1981-03-03 |
| 4236253 | Monostable multivibrator for use in pulse count demodulator or the like | Masaru Onishi | 1980-11-25 |
| 4236252 | Double-converting FM tuner | Yasuo Kominami, Masanori Ienaka, Takeshi Wada, Tsuneo Yamada | 1980-11-25 |
| 4225974 | Double super-heterodyne receiver | — | 1980-09-30 |
| 4223237 | Trigger pulse forming circuit | Tsuneo Yamada | 1980-09-16 |
| 4209714 | Logarithmic amplifier | — | 1980-06-24 |