ALLEGRO MICROSYSTEMS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H03K PULSE TECHNIQUE 3128
 
  
 
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 299
 
  
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 298
 
  
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 2154
 
  
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 1124
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 1158
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 193
 
  
 
G08C TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS 154
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7859835 Method and apparatus for thermal management of a radio frequency systemJun 10, 09Dec 28, 10[H05K]
6334158 User-interactive system and method for integrating applicationsNov 29, 96Dec 25, 01[G06F]
5331218 Switched-capacitor notch filter with programmable notch width and depthJul 13, 92Jul 19, 94[H03K]
5289344 Integrated-circuit lead-frame package with failure-resistant ground-lead and heat-sink meansOct 08, 92Feb 22, 94[H05K]
5286426 Assembling a lead frame between a pair of molding cavity platesApr 01, 92Feb 15, 94[B29C]
5278478 Programmable PD servo-compensatorJul 13, 92Jan 11, 94[G05B]
5264783 Contactless magnet-activated proportional controllerJan 21, 92Nov 23, 93[H03K, G05F]
5258760 Digitally dual-programmable integrator circuitJul 13, 92Nov 02, 93[H03M]
5245262 Hybrid control law servo co-processor integrated circuitJul 13, 92Sep 14, 93[G05B]
5220207 Load current monitor for MOS driverSep 03, 91Jun 15, 93[H03K]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2010/0156,397 METHODS AND APPARATUS FOR AN ANGLE SENSOR FOR A THROUGH SHAFTAbandonedDec 23, 08Jun 24, 10[G01B]
2008/0036,453 VEHICLE HAVING A SENSOR WITH CAPACITOR ON CHIPAbandonedOct 23, 07Feb 14, 08[G01B]
2008/0013,298 METHODS AND APPARATUS FOR PASSIVE ATTACHMENT OF COMPONENTS FOR INTEGRATED CIRCUITSAbandonedJul 14, 06Jan 17, 08[H05K]
2007/0279,053 INTEGRATED CURRENT SENSORAbandonedJul 11, 07Dec 06, 07[G01R]
2006/0219,436 CURRENT SENSORAbandonedMay 12, 06Oct 05, 06[H01L]
2005/0225,318 Methods and apparatus for vibration detectionAbandonedApr 08, 04Oct 13, 05[G01B, G01R]
5963028 Package for a magnetic field sensing deviceExpiredAug 19, 97Oct 05, 99[H01L, G01P, G01R]
5387821 Power distribution circuit with power factor correction and independent harmonic current filterExpiredNov 12, 92Feb 07, 95[H02J]
5202924 Stereo FM radio receiver with variable band pass stereo decoderExpiredDec 22, 89Apr 13, 93[H04H]
5139973 Method for making a semiconductor package with the distance between a lead frame die pad and heat spreader determined by the thickness of an intermediary insulating sheetExpiredDec 17, 90Aug 18, 92[H01L]
5075568 Switching bipolar driver circuit for inductive loadExpiredJan 22, 91Dec 24, 91[H03K]
5053947 Extended multistation bus system and methodExpiredSep 29, 89Oct 01, 91[G06F]
5045492 Method of making integrated circuit with high current transistor and CMOS transistorsExpiredSep 25, 89Sep 03, 91[H01L]
5045920 Dual-Hall ferrous-article-proximity sensorExpiredJun 28, 90Sep 03, 91[H01L]
5027402 Blend-on-noise stereo decoderExpiredDec 22, 89Jun 25, 91[H04H]
5012322 Semiconductor die and mounting assemblyExpiredMay 18, 87Apr 30, 91[H01L]
5001073 Method for making bipolar/CMOS IC with isolated vertical PNPExpiredJul 16, 90Mar 19, 91[H01L]
5001757 FM stereo tone detectorExpiredDec 22, 89Mar 19, 91[H04H]
4982155 Hall sensor with high pass hall voltage filterExpiredJun 29, 89Jan 01, 91[H01L, G01R]
4935698 Sensor having dual Hall IC, pole piece and magnetExpiredMar 03, 89Jun 19, 90[H01L, G01B]

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