Issued Patents All Time
Showing 76–100 of 101 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5459650 | Power supply circuit | — | 1995-10-17 |
| 5392313 | Remote control signal repeater having a bandpass filter and a level slicer | — | 1995-02-21 |
| 5347230 | Amplification circuit | — | 1994-09-13 |
| 5317494 | Power supply circuit utilizing voltage and current resonance for reducing switching loss | — | 1994-05-31 |
| 5297211 | Acoustic device for custom installation | — | 1994-03-22 |
| 5280543 | Acoustic apparatus and driving apparatus constituting the same | Kenji Yokoyama | 1994-01-18 |
| 5206912 | Power amplifier adapter | — | 1993-04-27 |
| 5103190 | Driving apparatus, and control information storage body and protection circuit therefor | — | 1992-04-07 |
| 5036228 | Temperature compensation circuit for negative impedance driving apparatus | — | 1991-07-30 |
| 4980920 | Negative impedance driving apparatus having temperature compensation circuit | Daisuke Suzuki | 1990-12-25 |
| 4969195 | Impedance compensation circuit in a speaker driving system | — | 1990-11-06 |
| 4949384 | Driving apparatus | Daisuke Suzuki | 1990-08-14 |
| 4943956 | Driving apparatus | — | 1990-07-24 |
| 4944020 | Temperature compensation circuit for negative impedance driving apparatus | — | 1990-07-24 |
| 4922469 | Acoustic characteristics changing device having variable characteristics | — | 1990-05-01 |
| 4908752 | DC-to-DC voltage-increasing power source | Eiichi Suzuki, Kenji Yokoyama | 1990-03-13 |
| 4891644 | Device for determining pick-up head tracking error in a digital tape player | — | 1990-01-02 |
| 4812846 | Dither circuit using dither including signal component having frequency half of sampling frequency | — | 1989-03-14 |
| 4803441 | Amplifying circuit | — | 1989-02-07 |
| 4739280 | Amplifier circuit having reduced crossover distortion | — | 1988-04-19 |
| 4530026 | Output transistor protection circuit in a power amplifier with collector power dissipation limitation | — | 1985-07-16 |
| 4498057 | Power amplifier with power supply switching | — | 1985-02-05 |
| 4447791 | Power supply changeover type power amplifier | Yoshiki Kasahara | 1984-05-08 |
| 4433369 | Power supply circuit for electrical apparatus | — | 1984-02-21 |
| 4406990 | Direct coupled DC amplification circuit | — | 1983-09-27 |