Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5253299 | Noise reduction apparatus in an FM stereo tuner | Yasushi Nishimura, Shigeru Yamaguchi | 1993-10-12 |
| 5067157 | Noise reduction apparatus in an FM stereo tuner | Yasushi Nishimura, Shigeru Yamaguchi | 1991-11-19 |
| 4633496 | Low-pass filter circuit | Kiyoshi Ohtaki | 1986-12-30 |
| 4590615 | Multipath distortion reducing circuit | Kiyoshi Ohtaki | 1986-05-20 |
| 4539697 | FM Stereo demodulating circuit | Tatsuo Numata, Masaharu Sakamoto | 1985-09-03 |
| 4523329 | FM receiver | Tatsuo Numata, Masaharu Sakamoto | 1985-06-11 |
| 4510452 | Circuit having square-law transfer characteristic | Masaharu Sakamoto | 1985-04-09 |
| 4502148 | FM Stereo demodulator for demodulating stereo signals directly from an FM intermediate frequency signal | Tadashi Noguchi, Tatsuo Numata | 1985-02-26 |
| 4497063 | FM stereo demodulator | Tadashi Noguchi, Tatsuo Numata | 1985-01-29 |
| 4489430 | FM Stereo demodulation circuit | Tatsuo Numata, Tadashi Noguchi | 1984-12-18 |
| 4399324 | Multiplex demodulation circuit | Tatsuo Numata | 1983-08-16 |
| 4362906 | FM Receiver | — | 1982-12-07 |
| 4315221 | Switching circuit | Tatsuo Numata | 1982-02-09 |
| 4280101 | Stereophonic signal demodulation circuit | Tatsuo Numata | 1981-07-21 |
| 4278944 | Chopper type switching circuit | — | 1981-07-14 |
| 4274057 | MPX Stereophonic demodulation | Tatsuo Numata | 1981-06-16 |