MAZDA KABUSHIKI KAISHA

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4687083 Lock up control of a hydraulic torque converter type automatic transmissionExpiredMar 22, 84Aug 18, 87[B60K, F16H]
4612904 Fuel injection system for internal combustion enginesExpiredFeb 14, 84Sep 23, 86[F02M]
4586728 Vehicle suspension means having variable suspension characteristicsExpiredFeb 27, 84May 06, 86[B60G]
4580533 Valve mechanism having variable valve timingExpiredMar 22, 84Apr 08, 86[F01L]
4580671 Lock-up control system for automobile automatic power transmissionsExpiredJan 26, 84Apr 08, 86[F16D]
4573371 Auxiliary power transmission having synchronizing mechanismExpiredJan 25, 82Mar 04, 86[F16D, F16H]
4573705 Suspension and steering control of motor vehiclesExpiredNov 18, 83Mar 04, 86[B60G]
4571938 Exhaust gas cleaning device for diesel enginesExpiredAug 26, 83Feb 25, 86[F01N]
4566718 Suspension and steering control of motor vehiclesExpiredNov 29, 83Jan 28, 86[B60G]
4566412 Intake system for rotary piston engineExpiredNov 28, 83Jan 28, 86[F02B]
4564214 Suspension system for motor vehicle having variable suspension characteristicsExpiredMar 15, 84Jan 14, 86[B60G]
4563329 Powder alloy sheet for forming a wear resistant layer on a workpieceExpiredOct 31, 83Jan 07, 86[B22F]
4562803 Intake system for rotary piston engineExpiredDec 01, 83Jan 07, 86[F02B]
4562804 Intake system for rotary piston engineExpiredOct 17, 83Jan 07, 86[F02B]
4562805 Intake system for rotary piston engineExpiredDec 01, 83Jan 07, 86[F02B]
4557241 Fuel injection means having air bleed meansExpiredFeb 02, 82Dec 10, 85[F02B]
4552111 Engine knocking detecting meansExpiredJul 18, 83Nov 12, 85[G01I, F02P, F02D]
4545612 Front side structure of an automobile bodyExpiredAug 24, 82Oct 08, 85[B62D]
4545825 Apex seals for high power rotary piston enginesExpiredMar 26, 84Oct 08, 85[C21D]
4541503 Four-wheel drive automobileExpiredSep 27, 83Sep 17, 85[B62K]

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