Assignee
ALLEGRO MICROSYSTEMS INC
US·139 granted patents·1 pending application·11,857 citations·filing 1987–2013
Top patents by PatentIndex Score
140 records- 0199US8350563B2Magnetic field sensor and method used in a magnetic field sensor that adjusts a sensitivity and/or an offset over temperatureALLEGRO MICROSYSTEMS INC·Filed 2010·Granted Jan 8, 2013·45 cites·20 claims
- 0299US8030918B2Magnetic field sensor with automatic sensitivity adjustmentALLEGRO MICROSYSTEMS INC·Filed 2010·Granted Oct 4, 2011·142 cites·10 claims
- 0399US7923996B2Magnetic field sensor with automatic sensitivity adjustmentALLEGRO MICROSYSTEMS INC·Filed 2008·Granted Apr 12, 2011·148 cites·23 claims
- 0499US7816905B2Arrangements for a current sensing circuit and integrated current sensorALLEGRO MICROSYSTEMS INC·Filed 2008·Granted Oct 19, 2010·139 cites·18 claims
- 0599US7800389B2Integrated circuit having built-in self-test featuresALLEGRO MICROSYSTEMS INC·Filed 2007·Granted Sep 21, 2010·113 cites·25 claims
- 0699US7598601B2Current sensorALLEGRO MICROSYSTEMS INC·Filed 2008·Granted Oct 6, 2009·141 cites·25 claims
- 0799US7425821B2Chopped Hall effect sensorALLEGRO MICROSYSTEMS INC·Filed 2006·Granted Sep 16, 2008·139 cites·25 claims
- 0899US7358724B2Integrated magnetic flux concentratorALLEGRO MICROSYSTEMS INC·Filed 2005·Granted Apr 15, 2008·154 cites·29 claims
- 0999US7307824B2Magnetic pole insensitive switch circuitALLEGRO MICROSYSTEMS INC·Filed 2006·Granted Dec 11, 2007·67 cites·9 claims
- 1099US7026808B2Method and apparatus for providing information from a speed and direction sensorALLEGRO MICROSYSTEMS INC·Filed 2004·Granted Apr 11, 2006·174 cites·23 claims
- 1198US7990209B2Switched capacitor notch filterALLEGRO MICROSYSTEMS INC·Filed 2009·Granted Aug 2, 2011·111 cites·30 claims
- 1298US7936144B2Self-calibration algorithms in a small motor driver IC with an integrated position sensorALLEGRO MICROSYSTEMS INC·Filed 2008·Granted May 3, 2011·93 cites·21 claims
- 1398US7768083B2Arrangements for an integrated sensorALLEGRO MICROSYSTEMS INC·Filed 2006·Granted Aug 3, 2010·133 cites·18 claims
- 1498US7747146B2Motor controller having a multifunction portALLEGRO MICROSYSTEMS INC·Filed 2007·Granted Jun 29, 2010·1.1k cites·25 claims
- 1598US7746056B2Integrated sensorALLEGRO MICROSYSTEMS INC·Filed 2009·Granted Jun 29, 2010·145 cites·19 claims
- 1698US7694200B2Integrated circuit having built-in self-test featuresALLEGRO MICROSYSTEMS INC·Filed 2007·Granted Apr 6, 2010·91 cites·26 claims
- 1798US7675245B2Electronic circuit for driving a diode loadALLEGRO MICROSYSTEMS INC·Filed 2007·Granted Mar 9, 2010·85 cites·12 claims
- 1898US7605647B1Chopper-stabilized amplifier and magnetic field sensorALLEGRO MICROSYSTEMS INC·Filed 2008·Granted Oct 20, 2009·110 cites·23 claims
- 1998US7592801B2Methods and apparatus for vibration detectionALLEGRO MICROSYSTEMS INC·Filed 2008·Granted Sep 22, 2009·84 cites·22 claims
- 2098US7590334B2Motor controllerALLEGRO MICROSYSTEMS INC·Filed 2007·Granted Sep 15, 2009·95 cites·25 claims
- 2198US7518354B2Multi-substrate integrated sensorALLEGRO MICROSYSTEMS INC·Filed 2007·Granted Apr 14, 2009·127 cites·21 claims
- 2298US7476953B2Integrated sensor having a magnetic flux concentratorALLEGRO MICROSYSTEMS INC·Filed 2005·Granted Jan 13, 2009·117 cites·35 claims
- 2398US7476816B2Current sensorALLEGRO MICROSYSTEMS INC·Filed 2006·Granted Jan 13, 2009·94 cites·23 claims
- 2498US7361531B2Methods and apparatus for Flip-Chip-On-Lead semiconductor packageALLEGRO MICROSYSTEMS INC·Filed 2005·Granted Apr 22, 2008·86 cites·19 claims
- 2598US7259545B2Integrated sensorALLEGRO MICROSYSTEMS INC·Filed 2003·Granted Aug 21, 2007·228 cites·31 claims
- 2698US7166807B2Current sensorALLEGRO MICROSYSTEMS INC·Filed 2005·Granted Jan 23, 2007·115 cites·29 claims
- 2798US7075287B1Current sensorALLEGRO MICROSYSTEMS INC·Filed 2006·Granted Jul 11, 2006·116 cites·28 claims
- 2898US6995315B2Current sensorALLEGRO MICROSYSTEMS INC·Filed 2005·Granted Feb 7, 2006·100 cites·20 claims
- 2998US6815944B2Method and apparatus for providing information from a speed and direction sensorALLEGRO MICROSYSTEMS INC·Filed 2002·Granted Nov 9, 2004·159 cites·22 claims
- 3098US6781359B2Integrated current sensorALLEGRO MICROSYSTEMS INC·Filed 2002·Granted Aug 24, 2004·238 cites·18 claims
- 3198US6622012B2Magnetic pole insensitive switch circuitALLEGRO MICROSYSTEMS INC·Filed 2001·Granted Sep 16, 2003·100 cites·13 claims
- 3298US6525531B2Detection of passing magnetic articles while adapting the detection thresholdALLEGRO MICROSYSTEMS INC·Filed 2001·Granted Feb 25, 2003·190 cites·10 claims
- 3398US6356741B1Magnetic pole insensitive switch circuitALLEGRO MICROSYSTEMS INC·Filed 1999·Granted Mar 12, 2002·156 cites·26 claims
- 3498US6297627B1Detection of passing magnetic articles with a peak-to-peak percentage threshold detector having a forcing circuit and automatic gain controlALLEGRO MICROSYSTEMS INC·Filed 1999·Granted Oct 2, 2001·201 cites·25 claims
- 3598US5621319AChopped hall sensor with synchronously chopped sample-and-hold circuitALLEGRO MICROSYSTEMS INC·Filed 1995·Granted Apr 15, 1997·263 cites·3 claims
- 3697US7999487B2Electronic circuit for driving a diode load with a predetermined average currentALLEGRO MICROSYSTEMS INC·Filed 2008·Granted Aug 16, 2011·58 cites·22 claims
- 3797US7994774B2Methods and apparatus for an analog rotational sensor having magnetic sensor elementsALLEGRO MICROSYSTEMS INC·Filed 2011·Granted Aug 9, 2011·64 cites·6 claims
- 3897US7911203B2Sensor having an analog processing module to generate a linear position outputALLEGRO MICROSYSTEMS INC·Filed 2010·Granted Mar 22, 2011·64 cites·31 claims
- 3997US7816772B2Methods and apparatus for multi-stage molding of integrated circuit packageALLEGRO MICROSYSTEMS INC·Filed 2007·Granted Oct 19, 2010·81 cites·7 claims
- 4097US7772838B2Methods and apparatus for vibration detectionALLEGRO MICROSYSTEMS INC·Filed 2008·Granted Aug 10, 2010·59 cites·15 claims
- 4197US7365530B2Method and apparatus for vibration detectionALLEGRO MICROSYSTEMS INC·Filed 2004·Granted Apr 29, 2008·95 cites·12 claims
- 4297US7362094B2Methods and apparatus for magnetic article detectionALLEGRO MICROSYSTEMS INC·Filed 2006·Granted Apr 22, 2008·153 cites·19 claims
- 4397US7265531B2Integrated current sensorALLEGRO MICROSYSTEMS INC·Filed 2004·Granted Sep 4, 2007·152 cites·6 claims
- 4497US7085119B2Magnetic pole insensitive switch circuitALLEGRO MICROSYSTEMS INC·Filed 2003·Granted Aug 1, 2006·69 cites·11 claims
- 4597US6984967B2Multi-mode switching regulatorALLEGRO MICROSYSTEMS INC·Filed 2003·Granted Jan 10, 2006·288 cites·48 claims
- 4697US6091239ADetection of passing magnetic articles with a peak referenced threshold detectorALLEGRO MICROSYSTEMS INC·Filed 1999·Granted Jul 18, 2000·169 cites·7 claims
- 4797US5781005AHall-effect ferromagnetic-article-proximity sensorALLEGRO MICROSYSTEMS INC·Filed 1995·Granted Jul 14, 1998·251 cites·14 claims
- 4896US7936164B2Folding current sensorALLEGRO MICROSYSTEMS INC·Filed 2008·Granted May 3, 2011·34 cites·27 claims
- 4996US7859255B2Matching of GMR sensors in a bridgeALLEGRO MICROSYSTEMS INC·Filed 2010·Granted Dec 28, 2010·15 cites·11 claims
- 5096US7714570B2Methods and apparatus for an analog rotational sensor having magnetic sensor elementsALLEGRO MICROSYSTEMS INC·Filed 2006·Granted May 11, 2010·79 cites·26 claims
Showing the top 50 of 140 patent records by PatentIndex Score.
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