NTN TOYO BEARING COMPANY, LIMITED

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4940937 Pulse generating ring for electromagnetic rotary position detectionExpiredAug 15, 89Jul 10, 90[G01B]
4865468 Wheel bearing assembly for automotive wheelExpiredMay 27, 88Sep 12, 89[F16C]
4863417 Auto-tensioner for beltExpiredSep 07, 88Sep 05, 89[F16H]
4856916 Conducting rolling bearingExpiredMar 30, 88Aug 15, 89[F16C]
4852707 Reversible self-locking clutchExpiredSep 07, 88Aug 01, 89[F16D]
4846592 Rolling bearingExpiredApr 19, 88Jul 11, 89[F16C, F16J]
4786270 Homokinetic tripod jointExpiredMay 06, 87Nov 22, 88[F16D]
4773890 Slidable-type homokinetic (universal) tripod jointExpiredApr 02, 87Sep 27, 88[F16D]
4747803 Tripod homokinetic universal joint with cylindrical rollers and a flat roller guideExpiredSep 16, 86May 31, 88[F16D]
4725153 Thrust roller bearing assemblyExpiredDec 03, 86Feb 16, 88[F16C]
4696581 Rolling bearingExpiredDec 02, 86Sep 29, 87[F16C]
4686404 Controlled radial magnetic bearing deviceExpiredJan 10, 86Aug 11, 87[F16C]
4684356 Roller bearing assemblies for a homokinetic universal jointExpiredMay 01, 86Aug 04, 87[F16D]
4592172 Method of machining tapered roller bearing inner ringsExpiredAug 09, 82Jun 03, 86[B24B]
4506422 Method of producing bearing devices for wheels of automobilesExpiredSep 14, 82Mar 26, 85[B21H]
4459164 Method and apparatus for compensating for axial deformation of screw shafts due to heat treatmentExpiredDec 20, 82Jul 10, 84[C21D]
4454640 Method of producing bearing devices for driving wheels of automobilesExpiredSep 13, 82Jun 19, 84[B24B]
4373490 Fuel injection apparatusExpiredJan 14, 81Feb 15, 83[F02D]
4361679 Process for producing heat-resistant and moisture-resistant polyborometallosiloxanesExpiredJun 30, 81Nov 30, 82[C08G]
4361691 Process for production of heat-resistant compoundsExpiredMay 05, 81Nov 30, 82[C08G]

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