Assignee
NIPPON SIGNAL CO LTD
JP·81 granted patents·2 pending applications·1,615 citations·filing 1985–2024
Top patents by PatentIndex Score
83 records- 0198US5912608APlanar type electromagnetic actuatorNIPPON SIGNAL CO LTD·Filed 1996·Granted Jun 15, 1999·177 cites·6 claims
- 0297US5606447APlanar type mirror galvanometer and method of manufactureNIPPON SIGNAL CO LTD·Filed 1994·Granted Feb 25, 1997·235 cites·20 claims
- 0393US5767666APlanar type mirror galvanometer incorpotating a displacement detection functionNIPPON SIGNAL CO LTD·Filed 1995·Granted Jun 16, 1998·129 cites·9 claims
- 0492US5872496APlanar type electromagnetic relay and method of manufacturing thereofNIPPON SIGNAL CO LTD·Filed 1994·Granted Feb 16, 1999·71 cites·14 claims
- 0591US5345138AMethod and apparatus for assuring safe workNIPPON SIGNAL CO LTD·Filed 1991·Granted Sep 6, 1994·84 cites·9 claims
- 0689US7443342B2Reception time determining apparatus and distance measuring apparatus using the sameNIPPON SIGNAL CO LTD·Filed 2006·Granted Oct 28, 2008·59 cites·10 claims
- 0787US8977414B2Train control systemNIPPON SIGNAL CO LTD·Filed 2014·Granted Mar 10, 2015·12 cites·4 claims
- 0886US4757417AMonitoring system for load-driving switch circuitsNIPPON SIGNAL CO LTD·Filed 1985·Granted Jul 12, 1988·38 cites·20 claims
- 0984US4661880AFailsafe monitoring system with input controlled switch circuitsNIPPON SIGNAL CO LTD·Filed 1985·Granted Apr 28, 1987·44 cites·9 claims
- 1083US9022325B2Train control systemNIPPON SIGNAL CO LTD·Filed 2014·Granted May 5, 2015·9 cites·6 claims
- 1182US7197932B2Failure detecting systemNIPPON SIGNAL CO LTD·Filed 2000·Granted Apr 3, 2007·24 cites·19 claims
- 1281US5442303AElectromagnetically coupled fail-safe logic circuitNIPPON SIGNAL CO LTD·Filed 1992·Granted Aug 15, 1995·34 cites·15 claims
- 1380US12352707B2Baggage inspection deviceNIPPON SIGNAL CO LTD·Filed 2021·Granted Jul 8, 2025·1 cites·5 claims
- 1479US6047634AFail-safe automatic sliding operation control apparatus for pressNIPPON SIGNAL CO LTD·Filed 1997·Granted Apr 11, 2000·28 cites·28 claims
- 1579US2025123224A1Baggage Inspection DeviceNIPPON SIGNAL CO LTD·Filed 2024·Application pending·0 cites
- 1678US8998149B2Ground device for train control systemNIPPON SIGNAL CO LTD·Filed 2014·Granted Apr 7, 2015·6 cites·6 claims
- 1777US2025027888A1Inspection SystemNIPPON SIGNAL CO LTD·Filed 2024·Application pending·0 cites
- 1874US5798703AMat sensorNIPPON SIGNAL CO LTD·Filed 1996·Granted Aug 25, 1998·32 cites·39 claims
- 1972US5763783AAcceleration sensorNIPPON SIGNAL CO LTD·Filed 1995·Granted Jun 9, 1998·32 cites·10 claims
- 2071US5006422AVisual magnetic recording medium and method of making the sameNIPPON SIGNAL CO LTD·Filed 1988·Granted Apr 9, 1991·33 cites·16 claims
- 2169US5793329AObject detection apparatusNIPPON SIGNAL CO LTD·Filed 1996·Granted Aug 11, 1998·37 cites·17 claims
- 2268US9821826B2Train information announcement systemNIPPON SIGNAL CO LTD·Filed 2014·Granted Nov 21, 2017·3 cites·3 claims
- 2368US6434025B2Power supply unitNIPPON SIGNAL CO LTD·Filed 1999·Granted Aug 13, 2002·37 cites·44 claims
- 2467US9669853B2Train control systemNIPPON SIGNAL CO LTD·Filed 2014·Granted Jun 6, 2017·4 cites·6 claims
- 2567US6774445B2ActuatorNIPPON SIGNAL CO LTD·Filed 2002·Granted Aug 10, 2004·26 cites·20 claims
- 2666US12140554B2Inspection systemNIPPON SIGNAL CO LTD·Filed 2020·Granted Nov 12, 2024·0 cites·3 claims
- 2766US8985524B2On-board device for train control systemNIPPON SIGNAL CO LTD·Filed 2014·Granted Mar 24, 2015·3 cites·12 claims
- 2865US5966009AElectromagnetic actuator and manufacturing method thereforNIPPON SIGNAL CO LTD·Filed 1996·Granted Oct 12, 1999·28 cites·8 claims
- 2965US5508697AAirplane detection systemNIPPON SIGNAL CO LTD·Filed 1992·Granted Apr 16, 1996·17 cites·8 claims
- 3064US12044633B2Inspection systemNIPPON SIGNAL CO LTD·Filed 2020·Granted Jul 23, 2024·0 cites·17 claims
- 3163US6456413B1Planar type optical scanning apparatus and mounting structure thereofNIPPON SIGNAL CO LTD·Filed 2000·Granted Sep 24, 2002·8 cites·5 claims
- 3262US9540019B2Train control deviceNIPPON SIGNAL CO LTD·Filed 2014·Granted Jan 10, 2017·2 cites·7 claims
- 3362US5574320ALoad drive circuitNIPPON SIGNAL CO LTD·Filed 1993·Granted Nov 12, 1996·16 cites·10 claims
- 3461US6292524B1Counting apparatus and rotation stopped detection apparatus which uses a counting apparatusNIPPON SIGNAL CO LTD·Filed 2000·Granted Sep 18, 2001·7 cites·5 claims
- 3561US6034449ALoad drive circuitNIPPON SIGNAL CO LTD·Filed 1997·Granted Mar 7, 2000·14 cites·7 claims
- 3660US9789891B2Train control apparatusNIPPON SIGNAL CO LTD·Filed 2014·Granted Oct 17, 2017·3 cites·6 claims
- 3758US9278702B2Train control systemNIPPON SIGNAL CO LTD·Filed 2014·Granted Mar 8, 2016·3 cites·13 claims
- 3858US6504485B2Monitoring apparatus and control apparatus for traffic signal lightsNIPPON SIGNAL CO LTD·Filed 2001·Granted Jan 7, 2003·17 cites·41 claims
- 3958US6148055ACounter and a revolution stop detection apparatus using the counterNIPPON SIGNAL CO LTD·Filed 1996·Granted Nov 14, 2000·16 cites·10 claims
- 4058US4667184AApparatus for counting enumeration input pulsesNIPPON SIGNAL CO LTD·Filed 1985·Granted May 19, 1987·12 cites·21 claims
- 4156US9319163B2Wireless communication network system synchronization methodNIPPON SIGNAL CO LTD·Filed 2014·Granted Apr 19, 2016·2 cites·16 claims
- 4255US9505420B2Train control systemNIPPON SIGNAL CO LTD·Filed 2014·Granted Nov 29, 2016·1 cites·3 claims
- 4355US5495228AFail-safe scan circuit and a multibeam sensorNIPPON SIGNAL CO LTD·Filed 1993·Granted Feb 27, 1996·17 cites·15 claims
- 4453US5668706ALoad driving circuitNIPPON SIGNAL CO LTD·Filed 1996·Granted Sep 16, 1997·11 cites·9 claims
- 4552US9663125B2Train control systemNIPPON SIGNAL CO LTD·Filed 2014·Granted May 30, 2017·2 cites·6 claims
- 4652US5568131AMotor rotation judgement circuit and apparatus using such circuit for verifying that a motor is stoppedNIPPON SIGNAL CO LTD·Filed 1993·Granted Oct 22, 1996·14 cites·15 claims
- 4752US5519598ALoad driving circuitNIPPON SIGNAL CO LTD·Filed 1993·Granted May 21, 1996·10 cites·3 claims
- 4851US6002249ARotation detection sensorNIPPON SIGNAL CO LTD·Filed 1996·Granted Dec 14, 1999·13 cites·9 claims
- 4951US5793197AApparatus for confirming stop of movable portionNIPPON SIGNAL CO LTD·Filed 1995·Granted Aug 11, 1998·10 cites·17 claims
- 5050US5768077AEarthing wire disconnection detection apparatus and leakage detection apparatus having an earthing wire disconnection detection function conductorNIPPON SIGNAL CO LTD·Filed 1996·Granted Jun 16, 1998·15 cites·18 claims
Showing the top 50 of 83 patent records by PatentIndex Score.
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