Wolfson Microelectronics Ltd.
117Patents
94Active
117Granted
59Portfolio score
Filing activity: Jan 23, 1987 → Mar 10, 2014 · 67 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7781249B2 | MEMS process and device | Emerging Cross-Sectional Technologies | 156 | Active |
| US7856804B2 | MEMS process and device | Emerging Cross-Sectional Technologies | 117 | Active |
| US8198941B2 | Amplifier circuit and method of amplifying a signal in an amplifier circuit | Electricity | 97 | Active |
| US8541993B2 | DC-DC converters operable in a discontinuous switching mode | Emerging Cross-Sectional Technologies | 85 | Active |
| US8331581B2 | Pattern detection circuitry | Electricity | 46 | Active |
| US6856202B2 | Phase/frequency detector and phase lock loop circuit | Emerging Cross-Sectional Technologies | 44 | Expired |
| US8514025B2 | Amplifier circuit and method of amplifying a signal in an amplifier circuit | Electricity | 43 | Active |
| US8519691B2 | Current limiting for DC-DC converters | Emerging Cross-Sectional Technologies | 40 | Active |
| US6583742B1 | Digital to analogue converter with dynamic element matching | Electricity | 36 | Expired |
| US7714660B2 | Amplifier circuit and methods of operation thereof | Electricity | 31 | Active |
| US7102557B1 | Switched capacitor DAC | Electricity | 30 | Expired |
| US8264273B2 | Charge pump circuit and methods of operation thereof | Electricity | 30 | Active |
| US8472636B2 | Ambient noise reduction arrangements | Electricity | 29 | Active |
| US6799889B2 | Temperature sensing apparatus and methods | Physics | 29 | Expired |
| US4823092A | MOS transconductance amplifier for active filters | Electricity | 28 | Expired |
| US7030699B2 | Amplifier | Electricity | 27 | Expired |
| US7626445B2 | Charge pump circuit and methods of operation thereof | Electricity | 25 | Active |
| US6828845B2 | Analogue selector | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7622984B2 | Charge pump circuit and methods of operation thereof | Electricity | 25 | Active |
| US7990742B2 | Charge pump circuit and methods of operation thereof | Electricity | 23 | Active |
| US8643129B2 | MEMS device | Emerging Cross-Sectional Technologies | 23 | Active |
| US8363856B2 | Audio amplifier circuit and electronic apparatus including the same | Electricity | 22 | Active |
| US7605574B2 | Switching regulator circuits | Electricity | 22 | Active |
| US8607036B2 | Power management apparatus and methods | Physics | 21 | Active |
| US7885422B2 | Audio device and method | Electricity | 19 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.