Inventor · disambiguated record
Charles Parkhurst
Also filed as: PARKHURST CHARLES
22 granted patents·5 pending applications·104 citations·filing 1988–2024
94Inventor score
Top patents by PatentIndex Score
27 records- 0182US9793707B2Fast transient precision power regulation apparatusTEXAS INSTRUMENTS INC·Filed 2013·Granted Oct 17, 2017·5 cites·18 claims
- 0279US9018923B2Dynamic bias soft start control apparatus and methodsPARKHURST CHARLES·Filed 2011·Granted Apr 28, 2015·6 cites·17 claims
- 0375US6710654B2Bipolar class AB folded cascode operational amplifier for high-speed applicationsTEXAS INSTRUMENTS INC·Filed 2001·Granted Mar 23, 2004·22 cites·17 claims
- 0474US8390327B1Radiation-tolerant level shiftingPARKHURST CHARLES·Filed 2011·Granted Mar 5, 2013·4 cites·20 claims
- 0573US8436682B1Fourth-order electrical current source apparatus, systems and methodsPARKHURST CHARLES·Filed 2011·Granted May 7, 2013·5 cites·20 claims
- 0669US9571051B2Reducing common mode transconductance in instrumentation amplifiersTEXAS INSTRUMENTS INC·Filed 2015·Granted Feb 14, 2017·2 cites·20 claims
- 0762US7307477B2Apparatus and method for affecting operation of a signal treating deviceTEXAS INSTRUMENTS INC·Filed 2006·Granted Dec 11, 2007·5 cites·20 claims
- 0862US7135927B2Ultra fast, low noise operational amplifier with dynamic biasingTEXAS INSTRUMENTS INC·Filed 2003·Granted Nov 14, 2006·11 cites·8 claims
- 0962US4852708ASpring shield for starter drives for internal combustion enginesPARKHURST CHARLES·Filed 1988·Granted Aug 1, 1989·14 cites·4 claims
- 1061US12474421B2Hall effect sensor with reduced JFET effectTEXAS INSTRUMENTS INC·Filed 2021·Granted Nov 18, 2025·0 cites·20 claims
- 1161US2025237716A1Magnetic gain correction of hall effect sensorsTEXAS INSTRUMENTS INC·Filed 2024·Application pending·0 cites
- 1260US2025237717A1Magnetic field sensor with bias resistorTEXAS INSTRUMENTS INC·Filed 2024·Application pending·0 cites
- 1358US7265445B2Integrated circuit packageTEXAS INSTRUMENTS INC·Filed 2005·Granted Sep 4, 2007·1 cites·23 claims
- 1456US2024329164A1Hall sensor with magnetic flux concentratorTEXAS INSTRUMENTS INC·Filed 2023·Application pending·0 cites
- 1555US8228108B2High speed fully differential resistor-based level formatterTORRES HECTOR·Filed 2010·Granted Jul 24, 2012·2 cites·16 claims
- 1654US2024213931A1Instrumentation amplifier with base current compensator for improved performanceTEXAS INSTRUMENTS INC·Filed 2022·Application pending·0 cites
- 1753US7362176B2High efficiency linear amplifierTEXAS INSTRUMENTS INC·Filed 2005·Granted Apr 22, 2008·3 cites·18 claims
- 1852US9000844B2Power efficient transconductance amplifier apparatus and systemsPARKHURST CHARLES·Filed 2012·Granted Apr 7, 2015·1 cites·18 claims
- 1952US6784736B2Apparatus and method for indicating a difference between first and second voltage signalsTEXAS INSTRUMENTS INC·Filed 2002·Granted Aug 31, 2004·7 cites·16 claims
- 2052US6710655B2Bipolar emitter couple pair transconductor for high speed operational amplifiersTEXAS INSTRUMENTS INC·Filed 2002·Granted Mar 23, 2004·7 cites·14 claims
- 2152US2019222184A1Analog driver with built-in wave shapingTEXAS INSTRUMENTS INC·Filed 2019·Application pending·0 cites
- 2247US10284157B2Analog driver with built-in wave shapingTEXAS INSTRUMENTS INC·Filed 2016·Granted May 7, 2019·0 cites·9 claims
- 2347US7078962B2Dynamic current generator with asymmetric common-mode input rangeTEXAS INSTRUMENTS INC·Filed 2003·Granted Jul 18, 2006·5 cites·6 claims
- 2446US11658626B2Split miller compensation in two-stage differential amplifiersTEXAS INSTRUMENTS INC·Filed 2021·Granted May 23, 2023·0 cites·18 claims
- 2540US7009450B2Low distortion and high slew rate output stage for voltage feedback amplifierTEXAS INSTRUMENTS INC·Filed 2003·Granted Mar 7, 2006·4 cites·17 claims
- 2639US10979006B2Chopper-stabilized current feedback amplifierTEXAS INSTRUMENTS INC·Filed 2019·Granted Apr 13, 2021·0 cites·18 claims
- 2734US8896323B2Radiation-tolerant overcurrent detectionPARKHURST CHARLES·Filed 2011·Granted Nov 25, 2014·0 cites·12 claims
Join the waitlist — get patent alerts
Get an alert when Charles Parkhurst files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →