Assignee
WOLFSON MICROELECTRONICS PLC
GB·71 granted patents·3 pending applications·1,224 citations·filing 2003–2014
Top patents by PatentIndex Score
74 records- 0198US7714660B2Amplifier circuit and methods of operation thereofWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted May 11, 2010·41 cites·50 claims
- 0297US8737171B2MEMS device and processWOLFSON MICROELECTRONICS PLC·Filed 2013·Granted May 27, 2014·30 cites·30 claims
- 0397US7856804B2MEMS process and deviceWOLFSON MICROELECTRONICS PLC·Filed 2010·Granted Dec 28, 2010·120 cites·40 claims
- 0497US7781249B2MEMS process and deviceWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted Aug 24, 2010·175 cites·46 claims
- 0597US7102557B1Switched capacitor DACWOLFSON MICROELECTRONICS PLC·Filed 2005·Granted Sep 5, 2006·53 cites·13 claims
- 0696US9300212B2DC-DC converters operable in a discontinuous switching modeWOLFSON MICROELECTRONICS PLC·Filed 2013·Granted Mar 29, 2016·23 cites·13 claims
- 0795US8987844B2MEMS device and processWOLFSON MICROELECTRONICS PLC·Filed 2014·Granted Mar 24, 2015·14 cites·24 claims
- 0895US7626374B2Voltage reference circuitWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted Dec 1, 2009·36 cites·36 claims
- 0995US7622984B2Charge pump circuit and methods of operation thereofWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted Nov 24, 2009·34 cites·27 claims
- 1093US9236794B2Charge pump circuit and methods of operations thereofWOLFSON MICROELECTRONICS PLC·Filed 2013·Granted Jan 12, 2016·11 cites·12 claims
- 1193US7990742B2Charge pump circuit and methods of operation thereofWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted Aug 2, 2011·33 cites·16 claims
- 1292US7723965B2DC-DC converter circuits, and methods and apparatus including such circuitsWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted May 25, 2010·28 cites·37 claims
- 1392US7626445B2Charge pump circuit and methods of operation thereofWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted Dec 1, 2009·34 cites·34 claims
- 1492US7205917B2Pulse width modulator quantisation circuitWOLFSON MICROELECTRONICS PLC·Filed 2005·Granted Apr 17, 2007·23 cites·52 claims
- 1591US7885422B2Audio device and methodWOLFSON MICROELECTRONICS PLC·Filed 2005·Granted Feb 8, 2011·25 cites·28 claims
- 1690US7765019B2Portable wireless telephony deviceWOLFSON MICROELECTRONICS PLC·Filed 2005·Granted Jul 27, 2010·18 cites·31 claims
- 1790US6856202B2Phase/frequency detector and phase lock loop circuitWOLFSON MICROELECTRONICS PLC·Filed 2003·Granted Feb 15, 2005·59 cites·22 claims
- 1889US7605574B2Switching regulator circuitsWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted Oct 20, 2009·33 cites·32 claims
- 1989US7376778B2Audio deviceWOLFSON MICROELECTRONICS PLC·Filed 2005·Granted May 20, 2008·24 cites·99 claims
- 2089US7348840B2Feedback controller for PWM amplifierWOLFSON MICROELECTRONICS PLC·Filed 2005·Granted Mar 25, 2008·29 cites·30 claims
- 2189US7295053B2Delay-locked loop circuitsWOLFSON MICROELECTRONICS PLC·Filed 2006·Granted Nov 13, 2007·19 cites·39 claims
- 2289US7030699B2AmplifierWOLFSON MICROELECTRONICS PLC·Filed 2004·Granted Apr 18, 2006·45 cites·28 claims
- 2388US7884558B2Driver apparatus and methodWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted Feb 8, 2011·13 cites·30 claims
- 2486US7884557B2Protection circuit and methodWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted Feb 8, 2011·14 cites·27 claims
- 2586US7106240B2Analogue to digital converterWOLFSON MICROELECTRONICS PLC·Filed 2005·Granted Sep 12, 2006·32 cites·43 claims
- 2685US8045724B2Ambient noise-reduction systemWOLFSON MICROELECTRONICS PLC·Filed 2008·Granted Oct 25, 2011·14 cites·21 claims
- 2781US9363610B2MEMS process and deviceWOLFSON MICROELECTRONICS PLC·Filed 2014·Granted Jun 7, 2016·3 cites·6 claims
- 2881US9306448B2Amplifier circuit and methods of operation thereofWOLFSON MICROELECTRONICS PLC·Filed 2014·Granted Apr 5, 2016·3 cites·21 claims
- 2981US8803261B2MEMS process and deviceWOLFSON MICROELECTRONICS PLC·Filed 2014·Granted Aug 12, 2014·3 cites·28 claims
- 3081US7777457B2Constant frequency current-mode buck-boost converter with reduced current sensingWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted Aug 17, 2010·17 cites·21 claims
- 3181US7301401B2Low noise op ampWOLFSON MICROELECTRONICS PLC·Filed 2005·Granted Nov 27, 2007·11 cites·18 claims
- 3280US7649480B2Calibration circuit and associated methodWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted Jan 19, 2010·11 cites·19 claims
- 3379US9154868B2Noise cancellation systemWOLFSON MICROELECTRONICS PLC·Filed 2013·Granted Oct 6, 2015·10 cites·34 claims
- 3479US8742970B2Analogue-to-digital converterWOLFSON MICROELECTRONICS PLC·Filed 2013·Granted Jun 3, 2014·6 cites·30 claims
- 3579US8373506B2Amplifier circuit and methods of operation thereofWOLFSON MICROELECTRONICS PLC·Filed 2010·Granted Feb 12, 2013·2 cites·17 claims
- 3678US8843227B2Wireless cellular telephone with audio codecWOLFSON MICROELECTRONICS PLC·Filed 2013·Granted Sep 23, 2014·3 cites·14 claims
- 3778US6952176B2Digital-to-analogue converter circuitsWOLFSON MICROELECTRONICS PLC·Filed 2004·Granted Oct 4, 2005·23 cites·11 claims
- 3877US7804434B2Switched-capacitor circuitWOLFSON MICROELECTRONICS PLC·Filed 2009·Granted Sep 28, 2010·22 cites·15 claims
- 3977US7579894B2Debounce circuit and methodWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted Aug 25, 2009·14 cites·59 claims
- 4077US7573152B2Power sequencing circuitWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted Aug 11, 2009·9 cites·59 claims
- 4175US8698256B2MEMS process and deviceWOLFSON MICROELECTRONICS PLC·Filed 2013·Granted Apr 15, 2014·2 cites·30 claims
- 4275US7301347B2Current sensing circuitWOLFSON MICROELECTRONICS PLC·Filed 2005·Granted Nov 27, 2007·13 cites·28 claims
- 4373US7583774B2Clock synchroniserWOLFSON MICROELECTRONICS PLC·Filed 2004·Granted Sep 1, 2009·16 cites·54 claims
- 4471US9473098B2Amplifier circuitWOLFSON MICROELECTRONICS PLC·Filed 2014·Granted Oct 18, 2016·2 cites·15 claims
- 4571US8988149B2Amplifier circuit and method of amplifying a signal in an amplifier circuitWOLFSON MICROELECTRONICS PLC·Filed 2013·Granted Mar 24, 2015·2 cites·23 claims
- 4670US9786264B2Ambient noise reduction arrangementsWOLFSON MICROELECTRONICS PLC·Filed 2013·Granted Oct 10, 2017·2 cites·10 claims
- 4769US7402986B2Power supply circuit for portable battery powered deviceWOLFSON MICROELECTRONICS PLC·Filed 2005·Granted Jul 22, 2008·9 cites·23 claims
- 4868US7061415B2Word length reduction circuitWOLFSON MICROELECTRONICS PLC·Filed 2004·Granted Jun 13, 2006·10 cites·32 claims
- 4967US9575116B2Apparatus and method for testing a capacitive transducer and/or associated electronic circuitryWOLFSON MICROELECTRONICS PLC·Filed 2014·Granted Feb 21, 2017·1 cites·20 claims
- 5065US7849245B2Bus-based communication systemWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted Dec 7, 2010·3 cites·22 claims
Showing the top 50 of 74 patent records by PatentIndex Score.
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