Issued Patents All Time
Showing 101–125 of 134 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4724398 | Gain-controlled amplifier | — | 1988-02-09 |
| 4653096 | Device for forming a simulated stereophonic sound field | — | 1987-03-24 |
| 4651106 | Multiplex stereo demodulator | — | 1987-03-17 |
| 4571553 | Amplifier circuit with distortion cancellation function | — | 1986-02-18 |
| 4560946 | Power amplifier | — | 1985-12-24 |
| 4531096 | Pulse-width modulation circuit | — | 1985-07-23 |
| 4524335 | Pulse-width modulation circuit with carrier signal frequency control | — | 1985-06-18 |
| 4512008 | Small signal amplifying circuit for a pickup cartridge | — | 1985-04-16 |
| 4504793 | Pulse-width modulation circuit | — | 1985-03-12 |
| 4454478 | Gain-controlled amplifier | — | 1984-06-12 |
| 4451798 | Gain-controlled amplifier | — | 1984-05-29 |
| 4446442 | Amplifier circuit | — | 1984-05-01 |
| 4433307 | Power supply changeover type power amplifier | — | 1984-02-21 |
| 4430625 | Power amplifier | — | 1984-02-07 |
| 4403201 | Bandpass filter circuit | — | 1983-09-06 |
| 4384261 | Class A complementary single-ended push-pull amplifier | — | 1983-05-17 |
| 4371840 | Gain control circuit for pulse width modulation amplifier | — | 1983-02-01 |
| 4357578 | Complementary differential amplifier | — | 1982-11-02 |
| 4349786 | Complementary differential amplifier circuit having source-follower driving circuits | — | 1982-09-14 |
| 4346349 | Multi-channel audio power amplifier | — | 1982-08-24 |
| 4339730 | Amplifier with power supply switching | — | 1982-07-13 |
| 4331929 | Gain-controlled amplifier | — | 1982-05-25 |
| 4321662 | Power supply circuit for electrical apparatus | — | 1982-03-23 |
| 4318054 | Input circuit of audio amplifier | — | 1982-03-02 |
| 4303889 | Filter circuit | Masaru Ida | 1981-12-01 |