Inventor · disambiguated record
Andreas P. Friedrich
Also filed as: FRIEDRICH ANDREAS · FRIEDRICH ANDREAS P
86 granted patents·13 pending applications·1,172 citations·filing 1999–2024
99Inventor score
Files withALLEGRO MICROSYSTEMS LLC54BLACK & DECKER INC13FRIEDRICH ANDREAS P10FOLETTO ANDREA4ALLEGRO MICROSYSTEMS INC2
Top patents by PatentIndex Score
99 records- 0199US9812588B2Magnetic field sensor integrated circuit with integral ferromagnetic materialALLEGRO MICROSYSTEMS LLC·Filed 2013·Granted Nov 7, 2017·26 cites·15 claims
- 0299US9081041B2High accuracy differential current sensor for applications like ground fault interruptersFRIEDRICH ANDREAS P·Filed 2012·Granted Jul 14, 2015·62 cites·51 claims
- 0399US8818749B2Circuits and methods for generating a self-test of a magnetic field sensorALLEGRO MICROSYSTEMS LLC·Filed 2013·Granted Aug 26, 2014·48 cites·22 claims
- 0499US8447556B2Circuits and methods for generating a self-test of a magnetic field sensorFRIEDRICH ANDREAS P·Filed 2010·Granted May 21, 2013·104 cites·46 claims
- 0599US7800389B2Integrated circuit having built-in self-test featuresALLEGRO MICROSYSTEMS INC·Filed 2007·Granted Sep 21, 2010·113 cites·25 claims
- 0698US10884031B2Current sensor systemALLEGRO MICROSYSTEMS LLC·Filed 2018·Granted Jan 5, 2021·14 cites·29 claims
- 0798US10230006B2Magnetic field sensor integrated circuit with an electromagnetic suppressorALLEGRO MICROSYSTEMS LLC·Filed 2017·Granted Mar 12, 2019·10 cites·25 claims
- 0898US9605975B2Magnetic field sensor for orientation independent speed and direction measurementALLEGRO MICROSYSTEMS LLC·Filed 2015·Granted Mar 28, 2017·22 cites·29 claims
- 0998US9151807B2Circuits and methods for generating a self-test of a magnetic field sensorALLEGRO MICROSYSTEMS LLC·Filed 2014·Granted Oct 6, 2015·32 cites·24 claims
- 1098US8896295B2Magnetic field sensor having multiple sensing elements and a programmable misalignment adjustment device for misalignment detection and correction in current sensing and other applicationsFRIEDRICH ANDREAS P·Filed 2012·Granted Nov 25, 2014·28 cites·28 claims
- 1198US7166807B2Current sensorALLEGRO MICROSYSTEMS INC·Filed 2005·Granted Jan 23, 2007·115 cites·29 claims
- 1297US9411025B2Integrated circuit package having a split lead frame and a magnetALLEGRO MICROSYSTEMS LLC·Filed 2013·Granted Aug 9, 2016·41 cites·63 claims
- 1397US9007054B2Angle sensor with misalignment detection and correctionFRIEDRICH ANDREAS P·Filed 2012·Granted Apr 14, 2015·22 cites·16 claims
- 1497US8729892B2Differential magnetic field sensor structure for orientation independent measurementFRIEDRICH ANDREAS P·Filed 2011·Granted May 20, 2014·26 cites·28 claims
- 1596US11994541B2Current sensor assemblies for low currentsALLEGRO MICROSYSTEMS LLC·Filed 2022·Granted May 28, 2024·2 cites·14 claims
- 1696US11555832B2Integrated shunt and magnetic field current sensorALLEGRO MICROSYSTEMS LLC·Filed 2021·Granted Jan 17, 2023·4 cites·58 claims
- 1796US10916665B2Magnetic field sensor integrated circuit with an integrated coilALLEGRO MICROSYSTEMS LLC·Filed 2019·Granted Feb 9, 2021·9 cites·20 claims
- 1896US10520559B2Arrangements for Hall effect elements and vertical epi resistors upon a substrateALLEGRO MICROSYSTEMS LLC·Filed 2017·Granted Dec 31, 2019·11 cites·21 claims
- 1996US10234513B2Magnetic field sensor integrated circuit with integral ferromagnetic materialVIG RAVI·Filed 2012·Granted Mar 19, 2019·37 cites·14 claims
- 2096US9823090B2Magnetic field sensor for sensing a movement of a target objectALLEGRO MICROSYSTEMS LLC·Filed 2014·Granted Nov 21, 2017·16 cites·33 claims
- 2196US9664748B2Systems and methods for providing signal encoding representative of a signature region in a targetALLEGRO MICROSYSTEMS LLC·Filed 2014·Granted May 30, 2017·22 cites·22 claims
- 2296US8598867B2Circuits and methods for generating a threshold signal used in a motion detectorFOLETTO ANDREA·Filed 2010·Granted Dec 3, 2013·18 cites·34 claims
- 2395US9494660B2Integrated circuit package having a split lead frameALLEGRO MICROSYSTEMS LLC·Filed 2013·Granted Nov 15, 2016·21 cites·30 claims
- 2495US9417295B2Circuits and methods for processing signals generated by a circular vertical hall (CVH) sensing element in the presence of a multi-pole magnetFRIEDRICH ANDREAS P·Filed 2012·Granted Aug 16, 2016·14 cites·18 claims
- 2595US9329057B2Gear tooth sensor with peak and threshold detectorsFOLETTO ANDREA·Filed 2012·Granted May 3, 2016·21 cites·35 claims
- 2695US8922206B2Magnetic field sensing element combining a circular vertical hall magnetic field sensing element with a planar hall elementFRIEDRICH ANDREAS P·Filed 2011·Granted Dec 30, 2014·15 cites·21 claims
- 2794US11444209B2Magnetic field sensor integrated circuit with an integrated coil enclosed with a semiconductor die by a mold materialALLEGRO MICROSYSTEMS LLC·Filed 2020·Granted Sep 13, 2022·2 cites·16 claims
- 2894US9993915B2Rear handleBLACK & DECKER INC·Filed 2015·Granted Jun 12, 2018·9 cites·9 claims
- 2994US9411023B2Magnetic field sensing element combining a circular vertical hall magnetic field sensing element with a planar hall elementALLEGRO MICROSYSTEMS LLC·Filed 2014·Granted Aug 9, 2016·12 cites·24 claims
- 3093US9869566B2Angle sensing using differential magnetic measurement and a back bias magnetALLEGRO MICROSYSTEMS LLC·Filed 2016·Granted Jan 16, 2018·8 cites·26 claims
- 3193US8749005B1Magnetic field sensor and method of fabricating a magnetic field sensor having a plurality of vertical hall elements arranged in at least a portion of a polygonal shapeFOLETTO ANDREA·Filed 2012·Granted Jun 10, 2014·22 cites·39 claims
- 3293US7624815B2Powered hammer with vibration dampenerBLACK & DECKER INC·Filed 2007·Granted Dec 1, 2009·31 cites·8 claims
- 3391US12112865B2Multiple branch bus bar for coreless current sensing applicationALLEGRO MICROSYSTEMS LLC·Filed 2022·Granted Oct 8, 2024·2 cites·14 claims
- 3491US10137562B2Rear handleBLACK & DECKER INC·Filed 2015·Granted Nov 27, 2018·7 cites·5 claims
- 3591US9797746B2Systems and methods for detecting a magnetic target by computing a barycenterALLEGRO MICROSYSTEMS LLC·Filed 2014·Granted Oct 24, 2017·9 cites·24 claims
- 3691US9046383B2Systems and methods that use magnetic field sensors to identify positions of a gear shift leverFRIEDRICH ANDREAS P·Filed 2012·Granted Jun 2, 2015·14 cites·48 claims
- 3790US11885866B2Auto-calibration for coreless current sensorsALLEGRO MICROSYSTEMS LLC·Filed 2022·Granted Jan 30, 2024·1 cites·19 claims
- 3890US9182456B2Magnetic field sensor for sensing rotation of an objectSHOEMAKER ERIC·Filed 2012·Granted Nov 10, 2015·14 cites·28 claims
- 3989US12203822B2Heterogeneous magnetic and inductive sensorsALLEGRO MICROSYSTEMS LLC·Filed 2022·Granted Jan 21, 2025·1 cites·6 claims
- 4088US10078117B2Magnetic field sensors and methods using mixing in a magnetoresistance elementALLEGRO MICROSYSTEMS LLC·Filed 2015·Granted Sep 18, 2018·4 cites·19 claims
- 4188US8058864B2Circuits and methods for providing a magnetic field sensor with an adaptable thresholdSCHELLER P KARL·Filed 2009·Granted Nov 15, 2011·18 cites·25 claims
- 4288US7413026B2Lubricant system for powered hammerBLACK & DECKER INC·Filed 2007·Granted Aug 19, 2008·21 cites·16 claims
- 4387US11892476B2Current sensor packageALLEGRO MICROSYSTEMS LLC·Filed 2022·Granted Feb 6, 2024·1 cites·23 claims
- 4487US2024222526A1Magnetic field sensor integrated circuit with integral ferromagnetic materialALLEGRO MICROSYSTEMS LLC·Filed 2024·Application pending·0 cites
- 4586US10323958B2Assembly using a magnetic field sensor for detecting a rotation and a linear movement of an objectALLEGRO MICROSYSTEMS LLC·Filed 2016·Granted Jun 18, 2019·4 cites·21 claims
- 4686US10272559B2Side handleBLACK & DECKER INC·Filed 2015·Granted Apr 30, 2019·6 cites·17 claims
- 4786US9664497B2Magnetic field sensor and method for sensing relative location of the magnetic field sensor and a target object along a movement lineALLEGRO MICROSYSTEMS LLC·Filed 2014·Granted May 30, 2017·8 cites·58 claims
- 4885US9739637B2Magnetic field motion sensor and related techniquesALLEGRO MICROSYSTEMS LLC·Filed 2014·Granted Aug 22, 2017·5 cites·31 claims
- 4984US11961920B2Integrated circuit package with magnet having a channelALLEGRO MICROSYSTEMS LLC·Filed 2023·Granted Apr 16, 2024·0 cites·16 claims
- 5084US9606190B2Magnetic field sensor arrangements and associated methodsFRIEDRICH ANDREAS P·Filed 2012·Granted Mar 28, 2017·6 cites·20 claims
Showing the top 50 of 99 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →