Masao Noro
102Patents
15h-index
51Co-inventors
89Inventor score
Filing activity: Mar 30, 1981 → Sep 8, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4943956A | Driving apparatus | Electricity | 138 | Expired |
| US6018262A | CMOS differential amplifier for a delta sigma modulator applicable for an analog-to-digital converter | Electricity | 96 | Expired |
| US7253350B2 | Vibration source driving device | Performing Operations; Transporting | 89 | Expired |
| US7209374B2 | Capacitor-input positive and negative power supply circuit | Electricity | 42 | Expired |
| US5459650A | Power supply circuit | Electricity | 26 | Expired |
| US4498057A | Power amplifier with power supply switching | Electricity | 26 | Expired |
| US6445320B1 | A/D conversion apparatus | Electricity | 25 | Expired |
| US4980920A | Negative impedance driving apparatus having temperature compensation circuit | Electricity | 24 | Expired |
| US5757299A | Analog-Digital converter using delta sigma modulation digital filtering, and gain-scaling | Electricity | 24 | Expired |
| US5939931A | Driving circuit having differential and H-bridge circuits for low voltage power source | Electricity | 22 | Expired |
| US6791405B2 | Triangular wave generating circuit used in a Class-D amplifier | Electricity | 21 | Expired |
| US4812846A | Dither circuit using dither including signal component having frequency half of sampling frequency | Electricity | 20 | Expired |
| US6111532A | Waveform shaper and sigma-delta D/A converter | Electricity | 17 | Expired |
| US6636608B1 | Pseudo-stereo circuit | Electricity | 16 | Expired |
| US5818372A | D/A converter circuit having offset voltage application device | Electricity | 15 | Expired |
| US4969195A | Impedance compensation circuit in a speaker driving system | Electricity | 15 | Expired |
| US5280543A | Acoustic apparatus and driving apparatus constituting the same | Electricity | 15 | Expired |
| US5347230A | Amplification circuit | Electricity | 15 | Expired |
| US7301094B1 | Device for driving vibration source | Performing Operations; Transporting | 14 | Expired |
| US5036228A | Temperature compensation circuit for negative impedance driving apparatus | Electricity | 14 | Expired |
| US5297211A | Acoustic device for custom installation | Electricity | 14 | Expired |
| US7268621B2 | Digital amplifier | Electricity | 14 | Expired |
| US6707337B2 | Self-operating PWM amplifier | Electricity | 13 | Expired |
| US6061279A | Delay circuit for analog signals | Physics | 12 | Expired |
| US5570091A | Analog-to-digital converter | Electricity | 11 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.