Bei Electronics, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 183
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 1106

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5345206 Moving coil actuator utilizing flux-focused interleaved magnetic circuitJun 10, 93Sep 06, 94[H02K, H01F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5759870 Method of making a surface micro-machined silicon pressure sensorExpiredAug 28, 95Jun 02, 98[H01L]
5442989 Frangible armor piercing incendiary projectileExpiredFeb 16, 93Aug 22, 95[B22F, F42B]
5398498 Joint construction between components of military projectile and releasable by melting of fusible eutectic helical memberExpiredMay 06, 94Mar 21, 95[F02K]
5394803 Joint construction between military rocket motor and warhead and releasable by melting of fusible eutectic wedging ring for operating flexible locking fingersExpiredFeb 14, 94Mar 07, 95[F42B]
5390487 Ignition safety device for a rocket motorExpiredNov 16, 93Feb 21, 95[F02K]
5299501 Frangible armor piercing incendiary projectileExpiredFeb 16, 93Apr 05, 94[F42B]
5250805 Optical sensing technique providing built in testExpiredJun 12, 91Oct 05, 93[H01J]
5223667 Plural piece flechettes affording enhanced penetrationExpiredJan 21, 92Jun 29, 93[F42B]
5216196 Safe & arming devices for rocket warheads and projectilesExpiredAug 09, 91Jun 01, 93[F42C]
5198616 Frangible armor piercing incendiary projectileExpiredSep 28, 90Mar 30, 93[F42B]
5053618 Index track support structureExpiredMar 30, 90Oct 01, 91[G01D]
5017772 Fiber optic probe sensor for measuring target displacementExpiredMay 30, 89May 21, 91[H01J]
5015836 Source intensity adjustment apparatus for optical channelExpiredFeb 05, 90May 14, 91[G01J]
4970511 Method and apparatus for n/(n-x) resolver encoderExpiredDec 04, 89Nov 13, 90[H03M]
4808955 Moving coil linear actuator with interleaved magnetic circuitsExpiredOct 05, 87Feb 28, 89[H01F]
4752683 Rotary encoder having flexible coupling meansExpiredMay 15, 87Jun 21, 88[G01D]
4736141 Apparatus to control direction of rotation of a brushless motor as a function of power polarityExpiredJun 26, 87Apr 05, 88[H02K]
4698608 Variable force linear actuatorExpiredApr 29, 86Oct 06, 87[H01F]
4678908 Zero reference generating method and apparatus for optical encodersExpiredDec 05, 84Jul 07, 87[G01D]
4602155 Zero reference generating method and apparatus for optical encodersExpiredJul 25, 83Jul 22, 86[G01D]

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